Kühlung in derMedizintechnik

Cooling forMedical Technology

brosch medizin_D_neu.qxd 07.01.2011 11:05 Uhr Seite 3

2 3

Cooling solutions for medical technology

Glen Dimplex Germany

RIEDEL Cooling Technology Division

The RIEDEL Cooling Technology Division has over 35 years’ expe-

rience in cooling technology, air conditioning, and the develop-

ment and manufacture of components for medical technology. The

proven medical cooling components, air conditioners, and heat

pumps manufactured by Glen Dimplex Deutschland GmbH (for-

merly KKW), BOSCH commercial cooling, and RIEDEL Cooling

Technology provide a solid foundation for tailoring devices to the

specific needs of medical technology. We also collaborate on new

developments with the manufacturers of medical devices.

RIEDEL Cooling Technology is a brand name in industrial, commer-

cial, and medical cooling, as part of the global GLEN DIMPLEX

group, based in Ireland.

Contents:

Flexibility and quality Page 4 - 5

Cooling solutions for computer tomography Page 6

Cooling solutions for magnetic resonance imaging Page 7

Cooling solutions for X-ray technology and cardiology Page 8

Cooling in urology and pain therapy Page 9

Cooling solutions in medical laser technology Page 9

Cooling solutions in medicine and laboratories Page 10 - 11

Standard process chiller systems for medical technology Page 12 - 13

More reading on technology Page 14 - 15

Custom-tailored cooling… Page 16 - 17

Environmental management by RIEDEL Page 18

Service Page 19

RIEDEL – Precision cooling for medical technology

Precision cooling systems by RIEDEL have become the standard in

modern medical equipment.

Advantages such as consistent operating safety, compact design,

and optimal temperature precision make our universal cooling

modules ideal for apparatus and equipment that require constant

and highly precise low internal temperatures in order to ensure

optimal image quality or for safety reasons. This applies, for exam-

ple, to computed and magnetic resonance tomography, as well as

lithotripsy and X-ray technology, where air-conditioning of the

switch cabinets, inductors, boosters, or compressors with their

complex computational and analytical electronics is essential for

increased data security and optimal image quality. High tempera-

ture accuracy, compact and space-saving design, and virtually

maintenance-free, dependable operation are crucial quality crite-

ria for RIEDEL cooling technology.

Technical highlights of customized RIEDEL cooling solutions include

progressively adjustable output control, integrated microelectronic

interfaces for communication with customer control elements, diagno-

sis and maintenance systems, and the certification according to inter-

national standards (UL/CSA).

2 3

Cooling solutions for medical technology

Glen Dimplex Germany

RIEDEL Cooling Technology Division

The RIEDEL Cooling Technology Division has over 35 years’ expe-

rience in cooling technology, air conditioning, and the develop-

ment and manufacture of components for medical technology. The

proven medical cooling components, air conditioners, and heat

pumps manufactured by Glen Dimplex Deutschland GmbH (for-

merly KKW), BOSCH commercial cooling, and RIEDEL Cooling

Technology provide a solid foundation for tailoring devices to the

specific needs of medical technology. We also collaborate on new

developments with the manufacturers of medical devices.

RIEDEL Cooling Technology is a brand name in industrial, commer-

cial, and medical cooling, as part of the global GLEN DIMPLEX

group, based in Ireland.

Contents:

Flexibility and quality Page 4 - 5

Cooling solutions for computer tomography Page 6

Cooling solutions for magnetic resonance imaging Page 7

Cooling solutions for X-ray technology and cardiology Page 8

Cooling in urology and pain therapy Page 9

Cooling solutions in medical laser technology Page 9

Cooling solutions in medicine and laboratories Page 10 - 11

Standard process chiller systems for medical technology Page 12 - 13

More reading on technology Page 14 - 15

Custom-tailored cooling… Page 16 - 17

Environmental management by RIEDEL Page 18

Service Page 19

RIEDEL – Precision cooling for medical technology

Precision cooling systems by RIEDEL have become the standard in

modern medical equipment.

Advantages such as consistent operating safety, compact design,

and optimal temperature precision make our universal cooling

modules ideal for apparatus and equipment that require constant

and highly precise low internal temperatures in order to ensure

optimal image quality or for safety reasons. This applies, for exam-

ple, to computed and magnetic resonance tomography, as well as

lithotripsy and X-ray technology, where air-conditioning of the

switch cabinets, inductors, boosters, or compressors with their

complex computational and analytical electronics is essential for

increased data security and optimal image quality. High tempera-

ture accuracy, compact and space-saving design, and virtually

maintenance-free, dependable operation are crucial quality crite-

ria for RIEDEL cooling technology.

Technical highlights of customized RIEDEL cooling solutions include

progressively adjustable output control, integrated microelectronic

interfaces for communication with customer control elements, diagno-

sis and maintenance systems, and the certification according to inter-

national standards (UL/CSA).

Individualized developmentAny apparatus used in medicine and research is only as good as

the cooling system that supports the processes being carried out.

Our standard components are complemented by individualized coo-

ling solutions developed in close cooperation with our customers.

Once these solutions are ready to enter production, they are manu-

factured in the desired quantities using state-of-the-art technology

in our Kulmbach plant. It goes without saying that we also provide

integration with customer-specific applications, friendly customer

service, and equipment that is easy to use.

Our in-depth experience with process engineering and medical

systems makes us number one in the world when it comes to coo-

ling, drying, and distributing liquid media in medical technology.

In addition to water, our chillers are ideally suited for cooling the

full range of media used in modern diagnostic and treatment equip-

ment, such as oils, hydraulic fluid, deionized water, and water/gly-

col mixtures. Depending on the particular customer requirements,

we can recommend either air-cooled, water/air-cooled, or water-

cooled refrigerating systems.

Our services:Project planning and development:• Global project management using proven tools (MS Project) for

optimal project planning and monitoring, as well as ensuring effi-cient information exchange.

• Project planning and implementation according to the “V model” (NASA, Bradley)The procedural components specified in this model ensure that all relevant product dependent variables are taken into account during development.

• Use of Auto CAD and Inventor design software to enable realistic application modeling prior to the construction stage.

• Interchange of IGES or Step 3D filesThese tools ensure efficient and error-free mutual data transfer.

• Creation of requirement and functional specifications for custo-mer hardware and software solutions, as well as for individual components from subcontractors.

• Creation of delivery specifications for global shipping in consul-tation with the customer.

• Guaranteed readiness for series production through skillful prototype construction.

• Preparing risk analyses (FMEA) for products and processes. Fault and influence analyses carried out during the series pro-duction process reinforce our position as a reliable and trust-worthy long-term partner.

• Professional replacement part management.Available worldwide, upon request.

• Proper and sophisticated change procedures. We make chan-ges at our facility only after obtaining customer approval.

Production and quality management• State-of-the-art laboratory technology coupled with comprehen-

sive measurement techniques and modern evaluation methods for assessing results from developmental prototypes.

• A high degree of vertical integration together with the stock availability at our Kulmbach plant mean that we are not overly reliant on suppliers.

• Highly efficient series production with partially automated pro-duction lines and computer-assisted assembly stations, as well as automated punching equipment, precision bending and wel-ding equipment, and an automated powder spray coating facility.

• Test simulations for voltages, frequencies, and ambient tempera-tures in different regions of the world.

• Five test stations for simulated users.

• Regular internal and external system and process auditsin line with DIN/ISO 9000:2000 and 14001.

• Conversion of development documents, parts lists, drawings, and manufacturing instructions into work plans.

• Implementation of change requests. Change requests are imple-mented by the designer and communicated to production – all in consultation with the customer.

Logistics/service• Kanban delivery for both the internal and external flow of materi-

als using consignment stock. Delivery procedures can be adap-ted to meet customer requirements.

• 24 hour provision of replacement parts. This is generally mana-ged through customer logistics.

• Service hotline. Upon request with 24/7 availability.

Certified quality – “Made in Germany”As a global player with worldwide references, our plants meetinternational standards and are certified in line with:

UL/CSA, CE, the EMC directive, low voltage directive, and FDAapprovals.

Flexibility and quality – our company philosophy

4 5

Individualized developmentAny apparatus used in medicine and research is only as good as

the cooling system that supports the processes being carried out.

Our standard components are complemented by individualized coo-

ling solutions developed in close cooperation with our customers.

Once these solutions are ready to enter production, they are manu-

factured in the desired quantities using state-of-the-art technology

in our Kulmbach plant. It goes without saying that we also provide

integration with customer-specific applications, friendly customer

service, and equipment that is easy to use.

Our in-depth experience with process engineering and medical

systems makes us number one in the world when it comes to coo-

ling, drying, and distributing liquid media in medical technology.

In addition to water, our chillers are ideally suited for cooling the

full range of media used in modern diagnostic and treatment equip-

ment, such as oils, hydraulic fluid, deionized water, and water/gly-

col mixtures. Depending on the particular customer requirements,

we can recommend either air-cooled, water/air-cooled, or water-

cooled refrigerating systems.

Our services:Project planning and development:• Global project management using proven tools (MS Project) for

optimal project planning and monitoring, as well as ensuring effi-cient information exchange.

• Project planning and implementation according to the “V model” (NASA, Bradley)The procedural components specified in this model ensure that all relevant product dependent variables are taken into account during development.

• Use of Auto CAD and Inventor design software to enable realistic application modeling prior to the construction stage.

• Interchange of IGES or Step 3D filesThese tools ensure efficient and error-free mutual data transfer.

• Creation of requirement and functional specifications for custo-mer hardware and software solutions, as well as for individual components from subcontractors.

• Creation of delivery specifications for global shipping in consul-tation with the customer.

• Guaranteed readiness for series production through skillful prototype construction.

• Preparing risk analyses (FMEA) for products and processes. Fault and influence analyses carried out during the series pro-duction process reinforce our position as a reliable and trust-worthy long-term partner.

• Professional replacement part management.Available worldwide, upon request.

• Proper and sophisticated change procedures. We make chan-ges at our facility only after obtaining customer approval.

Production and quality management• State-of-the-art laboratory technology coupled with comprehen-

sive measurement techniques and modern evaluation methods for assessing results from developmental prototypes.

• A high degree of vertical integration together with the stock availability at our Kulmbach plant mean that we are not overly reliant on suppliers.

• Highly efficient series production with partially automated pro-duction lines and computer-assisted assembly stations, as well as automated punching equipment, precision bending and wel-ding equipment, and an automated powder spray coating facility.

• Test simulations for voltages, frequencies, and ambient tempera-tures in different regions of the world.

• Five test stations for simulated users.

• Regular internal and external system and process auditsin line with DIN/ISO 9000:2000 and 14001.

• Conversion of development documents, parts lists, drawings, and manufacturing instructions into work plans.

• Implementation of change requests. Change requests are imple-mented by the designer and communicated to production – all in consultation with the customer.

Logistics/service• Kanban delivery for both the internal and external flow of materi-

als using consignment stock. Delivery procedures can be adap-ted to meet customer requirements.

• 24 hour provision of replacement parts. This is generally mana-ged through customer logistics.

• Service hotline. Upon request with 24/7 availability.

Certified quality – “Made in Germany”As a global player with worldwide references, our plants meetinternational standards and are certified in line with:

UL/CSA, CE, the EMC directive, low voltage directive, and FDAapprovals.

Flexibility and quality – our company philosophy

4 5

6 7

Cooling solutions for computer tomography

The RIEDEL cooling units used in computer tomography are

responsible for cooling the entire gantry, including the drive

system, detectors, and signal processors for raw data capture, as

well as cooling the emitter, which converts up to 98% of its energy

into heat.

Properly cooling the emitter is crucial for ensuring consistent,

long-term performance.

Cooling solutions for magnetic resonance tomography

In magnetic resonance tomography, our cooling units are used on

gradient coils, gradient amplifiers, radio frequency amplifiers, the

helium compressor, and for air conditioning the control panels.

By cooling and air conditioning all these components, RIEDEL is

responsible for increased data security and optimal image quality.

RIEDEL cooling systems and components are modified individually to

meet these specific requirements and developed for series produc-

tion. RIEDEL has become the number one in the world for industrial

cooling solutions, with skilled series production that is certified in

accordance with standards such as UL/CSA, CE, EMC, and 2M2.

6 7

Cooling solutions for computer tomography

The RIEDEL cooling units used in computer tomography are

responsible for cooling the entire gantry, including the drive

system, detectors, and signal processors for raw data capture, as

well as cooling the emitter, which converts up to 98% of its energy

into heat.

Properly cooling the emitter is crucial for ensuring consistent,

long-term performance.

Cooling solutions for magnetic resonance tomography

In magnetic resonance tomography, our cooling units are used on

gradient coils, gradient amplifiers, radio frequency amplifiers, the

helium compressor, and for air conditioning the control panels.

By cooling and air conditioning all these components, RIEDEL is

responsible for increased data security and optimal image quality.

RIEDEL cooling systems and components are modified individually to

meet these specific requirements and developed for series produc-

tion. RIEDEL has become the number one in the world for industrial

cooling solutions, with skilled series production that is certified in

accordance with standards such as UL/CSA, CE, EMC, and 2M2.

8 9

Cooling solutions for urology and pain therapyIn ESWT (extracorporeal shockwave therapy/lithotripsy), cooling

units are used to cool the water circulating within the shockwave

therapy devices. RIEDEL cooling units are developed and manu-

factured either as installed cooling units or freestanding devices,

depending on the original equipment being used.

Cooling solutions for X-ray technology and cardiology

In X-ray technology, continuous emitter loads lead to a heat build-

up, which is reliably dissipated by RIEDEL cooling units. This leads

to increased product life for the emitter and ensures acceptable

performance over the long term.

In cardiology, RIEDEL cooling units ensure that the catheter used

in coronary angiography is maintained at a temperature that is

comfortable for the patient, which also increases patient safety.

RIEDEL cooling units are therefore designed to meet the highest

levels of operational reliability and are subjected to endurance

tests.

Oil-cooled units are primarily used in this field, with either internal

or external heat exchangers as required.

Cooling solutions for medical laser technologyLasers are used primarily within the medical fields of ophthalmo-

logy, dermatology, surgery, and urology. Inside medical lasers, the

laser source, lenses, and fiber couplings are cooled using OEM

cooling elements that have either been specially modified or

developed according to customer-specific requirements.

8 9

Cooling solutions for urology and pain therapyIn ESWT (extracorporeal shockwave therapy/lithotripsy), cooling

units are used to cool the water circulating within the shockwave

therapy devices. RIEDEL cooling units are developed and manu-

factured either as installed cooling units or freestanding devices,

depending on the original equipment being used.

Cooling solutions for X-ray technology and cardiology

In X-ray technology, continuous emitter loads lead to a heat build-

up, which is reliably dissipated by RIEDEL cooling units. This leads

to increased product life for the emitter and ensures acceptable

performance over the long term.

In cardiology, RIEDEL cooling units ensure that the catheter used

in coronary angiography is maintained at a temperature that is

comfortable for the patient, which also increases patient safety.

RIEDEL cooling units are therefore designed to meet the highest

levels of operational reliability and are subjected to endurance

tests.

Oil-cooled units are primarily used in this field, with either internal

or external heat exchangers as required.

Cooling solutions for medical laser technologyLasers are used primarily within the medical fields of ophthalmo-

logy, dermatology, surgery, and urology. Inside medical lasers, the

laser source, lenses, and fiber couplings are cooled using OEM

cooling elements that have either been specially modified or

developed according to customer-specific requirements.

10 11

conditions and consequently ensures a steady temperature level

everywhere within the equipment. The temperature is automati-

cally held constant by a room thermostat or an electronic, micro-

processor-controlled temperature and defroster controller, even

with variable outside temperatures.

Defrosting is automatic via a rapid defrost mode, by reversing the

cooling machine’s refrigerant circulation. The necessary plasma

storage temperature is guaranteed with thermal and temporal

monitoring.

Cooling solutions for medical and analytical laboratories

Any analysis result is only as good as the cooling that supports

the process. This will ensure data precision and comparable

results for serial analyses.

With our expertise in vending machine cooling and the use of

proven components from BOSCH refrigerator technology, we are

specialists in the area of cooling machines and blood plasma

refrigerators. Particularly when it comes to maintaining constant

temperature levels, our high-performance, compact cooling

systems guarantee reliability and durability. Refrigerators and

freezers with RIEDEL cooling units are used in drug stores, hospi-

tals, clinics, blood banks, institutes, and laboratories around the

world – for all applications that demand the highest standards in

cooling.

Applications for our cooling equipment include:

- Refrigerators for medicine

- Refrigerators for units of blood

- Blood plasma freezers

- Laboratory refrigerators

- Laboratory freezers

- Refrigerators and freezers, also with -protected interiors

- Communal refrigerators

Refrigerators for medicine

Our standard model refrigerators for

medicine employ cooling units with

essentially flawless operation, which

use plate heat exchangers based on

BOSCH refrigerator technology. The

temperature is automatically held con-

stant by a room thermostat or an elec-

tronic, microprocessor-controlled tem-

perature and defroster controller, even

when outside temperatures are variable.

Refrigerators for units of blood/blood plasma freezers

This area is the most demanding when it comes to reliability and

precise temperatures. Units of blood are stored at +4°C according

to DIN specifications, while tempera-

tures ranging from -32°C to -40°C are

needed for storing plasma.

The forced-air cooling of our high-

performance units reduces the

temperature drop caused by physical

Cooling solutions in medicine and laboratories

10 11

conditions and consequently ensures a steady temperature level

everywhere within the equipment. The temperature is automati-

cally held constant by a room thermostat or an electronic, micro-

processor-controlled temperature and defroster controller, even

with variable outside temperatures.

Defrosting is automatic via a rapid defrost mode, by reversing the

cooling machine’s refrigerant circulation. The necessary plasma

storage temperature is guaranteed with thermal and temporal

monitoring.

Cooling solutions for medical and analytical laboratories

Any analysis result is only as good as the cooling that supports

the process. This will ensure data precision and comparable

results for serial analyses.

With our expertise in vending machine cooling and the use of

proven components from BOSCH refrigerator technology, we are

specialists in the area of cooling machines and blood plasma

refrigerators. Particularly when it comes to maintaining constant

temperature levels, our high-performance, compact cooling

systems guarantee reliability and durability. Refrigerators and

freezers with RIEDEL cooling units are used in drug stores, hospi-

tals, clinics, blood banks, institutes, and laboratories around the

world – for all applications that demand the highest standards in

cooling.

Applications for our cooling equipment include:

- Refrigerators for medicine

- Refrigerators for units of blood

- Blood plasma freezers

- Laboratory refrigerators

- Laboratory freezers

- Refrigerators and freezers, also with -protected interiors

- Communal refrigerators

Refrigerators for medicine

Our standard model refrigerators for

medicine employ cooling units with

essentially flawless operation, which

use plate heat exchangers based on

BOSCH refrigerator technology. The

temperature is automatically held con-

stant by a room thermostat or an elec-

tronic, microprocessor-controlled tem-

perature and defroster controller, even

when outside temperatures are variable.

Refrigerators for units of blood/blood plasma freezers

This area is the most demanding when it comes to reliability and

precise temperatures. Units of blood are stored at +4°C according

to DIN specifications, while tempera-

tures ranging from -32°C to -40°C are

needed for storing plasma.

The forced-air cooling of our high-

performance units reduces the

temperature drop caused by physical

Cooling solutions in medicine and laboratories

All RIEDEL modular process chillers are compact, completely

assembled, and individually tested. Having many available options

means that they can be used in a wide range of technical areas:

• Medical technology

• Machine tool construction

• Laser technology

• Plastics processing

• Printing machines

• Surface technology

• Food industry, and many more

The use of various CFC-free refrigerants requires additional opti-

mization of the housing geometry. These compact, zinc-plated and

powder-coated housings are exclusively equipped with technical-

ly advanced components from renowned manufacturers.

The electrical components used in the chillers meet all required

industry standards.

Process chillers with cooling capacities of 15 to 75 kW

Standard process chiller systems for medical technology

Options:

• Outdoor installation• Condenser protection screen, air filter mat• Air filter mat monitoring• Radial ventilators• Stepless speed control for ventilators• Low-noise design• Overflow valve• Fixed bypass• Low-temperature pressure gauge• Refrigerant outlet temperature < +8ºC• Flow monitors• Dirt filters• Shut-off devices (check valve/solenoid valve)• External pressure-free tank filling• Automatic water refilling• Tank heating for temperature control• Pump switch-off• Stainless steel or PVC water circulation system for demineralized water• Flow monitoring• Guide valve monitoring• Dual-circulation system• Water-cooled design• Heat recovery systems• 24V AC/DC activation• Special voltages and frequencies• Digital thermometer• Critical value monitoring• Differential temperature control• Control panel heating, ventilator• Bus connection• Individual fault alarms

Cooling capacity 15 to 75 kW

1) Cooling capacity without pump power loss, ambient temperature +32 ºC, refrigerant exit temperature +20 ºC, refrigerant nominal volume flow, all data refer to operation at 3x400V/50Hz/PE

2) With operating conditions as in 1)

3) Half sound field without reflection, 5 m distance, operator side with operating conditions as in 1)

Everything from a single source – what we can offer you

• Planning and optimization of complex medical cooling systems• Consultation and support for reliable investment decisions• Production of industrial liquid cooling systems• Delivery of components such as heat exchanger stations and tanks• Integration of existing technologies for capacity expansions• Electrical integration into centralized control systems• Instruction, start-up, and training for operators• World-wide sales and service network• Maintenance contracts• Replacement parts• Complete piping design for turnkey systems

Process chiller type PC 161 201 251 321 401 501 631 801

Refrigerant Type R407C

Net cooling capacity 1) kW 15,8 19,6 25,6 31,1 37,6 49,0 62,8 73,0

Power consumption 2), with 3 bar pump kW 6,9 8,4 10,3 12,3 14,8 17,9 24,1 27,3

Operating area ambient temperatures ºC +5 to +40

Operating area refrigerant exit temperature ºC +10 to +20

Nominal value tolerance K ±2 / ±1 ±2 / ±1 / ±0,5

Refrigerant Type R134a

Net cooling capacity 1) kW 16,7 20,9 24,4 32,2 43,0 50,2 65,4 74,2

Power consumption 2), with 3 bar pump kW 7,6 9,1 11,1 13,5 18,4 20,6 26,5 29,9

Operating area ambient temperatures ºC +5 to +47 +5 to +50

Operating area refrigerant exit temperature ºC +8 to +20

Nominal value tolerance K ±2 / ±1 ±2 / ±1 / ±0,5

Tank capacity l 80 140 200 300 200/400

Available pump pressure bar 3

Nominal volume flow m3/h 1,5 2,1 3,3 4,5 5,6 7,0 9,0 11,0

Minimum volume flow m3/h 0,9 1,3 2,0 2,7 3,4 4,2 5,4 6,6

Noise level 3) dB(A) 59 62 63 65

Operating voltage V/Hz 3x400V/50Hz or 3x460V/60Hz

Refrigerant connections Rp 1” ID 1 1/4” ID 1 1/2” ID 2” ID

Weight (net) kg 300 330 440 480 670 710 780 850

Dimensions Width mm 1186 1541 1872 2220

Height mm 1755 2005

Depth mm 874

Technical data

The requirements for the cold water circulation and electrical

systems are designed in accordance with the specific applica-

tions of the customer. The refrigeration circulation system and

housing technology have been standardized. This guarantees a

quality for series production that is consistently high, yet flexible.

The production of our process chillers is subject to the following

EC directives/standards/regulations:

EC directives / ISO 9001 / EN 378 / VDE / BGV / UL / CSA

Your advantages at a glance:

• Compact modular design

• Exact coordination of components

• Reproducible quality

• Extreme resilience

• High performance with minimal energy use

• Low noise level

• Optimal service accessibility

• Outstanding price/performance ratio

• Competent contact partners with many years of experience in the

areas of project design, technology, sales, and service

Brief specification of the standard version:

• Compact housing for indoor setup, zinc-plated and powder-coated

• Air-cooled condenser for use with CFC-free refrigerantsR134a, R407C, and R404A

• Axial ventilator(s) with a crescent design, extremely low noise and maintenance-free

• Pressure-controlled ventilator adjustment

• Fully hermetic compressor, 100% suction cooling

• Evaporator as plate heat exchanger

• Thermostatic expansion valve

• High and low pressure switch

• Water circulation system with tank and pump, according to application-specific criteria

• Corrosion-resistant fixed piping in the water circulation system madeof copper or plastic, as well as stainless steel pumps

• Switching and control units completely wired

• Remote control and collective alarm function

• Microprocessor-controlled temperature control with digital nominal/actual display

• Automatic performance control

12 13

All RIEDEL modular process chillers are compact, completely

assembled, and individually tested. Having many available options

means that they can be used in a wide range of technical areas:

• Medical technology

• Machine tool construction

• Laser technology

• Plastics processing

• Printing machines

• Surface technology

• Food industry, and many more

The use of various CFC-free refrigerants requires additional opti-

mization of the housing geometry. These compact, zinc-plated and

powder-coated housings are exclusively equipped with technical-

ly advanced components from renowned manufacturers.

The electrical components used in the chillers meet all required

industry standards.

Process chillers with cooling capacities of 15 to 75 kW

Standard process chiller systems for medical technology

Options:

• Outdoor installation• Condenser protection screen, air filter mat• Air filter mat monitoring• Radial ventilators• Stepless speed control for ventilators• Low-noise design• Overflow valve• Fixed bypass• Low-temperature pressure gauge• Refrigerant outlet temperature < +8ºC• Flow monitors• Dirt filters• Shut-off devices (check valve/solenoid valve)• External pressure-free tank filling• Automatic water refilling• Tank heating for temperature control• Pump switch-off• Stainless steel or PVC water circulation system for demineralized water• Flow monitoring• Guide valve monitoring• Dual-circulation system• Water-cooled design• Heat recovery systems• 24V AC/DC activation• Special voltages and frequencies• Digital thermometer• Critical value monitoring• Differential temperature control• Control panel heating, ventilator• Bus connection• Individual fault alarms

Cooling capacity 15 to 75 kW

1) Cooling capacity without pump power loss, ambient temperature +32 ºC, refrigerant exit temperature +20 ºC, refrigerant nominal volume flow, all data refer to operation at 3x400V/50Hz/PE

2) With operating conditions as in 1)

3) Half sound field without reflection, 5 m distance, operator side with operating conditions as in 1)

Everything from a single source – what we can offer you

• Planning and optimization of complex medical cooling systems• Consultation and support for reliable investment decisions• Production of industrial liquid cooling systems• Delivery of components such as heat exchanger stations and tanks• Integration of existing technologies for capacity expansions• Electrical integration into centralized control systems• Instruction, start-up, and training for operators• World-wide sales and service network• Maintenance contracts• Replacement parts• Complete piping design for turnkey systems

Process chiller type PC 161 201 251 321 401 501 631 801

Refrigerant Type R407C

Net cooling capacity 1) kW 15,8 19,6 25,6 31,1 37,6 49,0 62,8 73,0

Power consumption 2), with 3 bar pump kW 6,9 8,4 10,3 12,3 14,8 17,9 24,1 27,3

Operating area ambient temperatures ºC +5 to +40

Operating area refrigerant exit temperature ºC +10 to +20

Nominal value tolerance K ±2 / ±1 ±2 / ±1 / ±0,5

Refrigerant Type R134a

Net cooling capacity 1) kW 16,7 20,9 24,4 32,2 43,0 50,2 65,4 74,2

Power consumption 2), with 3 bar pump kW 7,6 9,1 11,1 13,5 18,4 20,6 26,5 29,9

Operating area ambient temperatures ºC +5 to +47 +5 to +50

Operating area refrigerant exit temperature ºC +8 to +20

Nominal value tolerance K ±2 / ±1 ±2 / ±1 / ±0,5

Tank capacity l 80 140 200 300 200/400

Available pump pressure bar 3

Nominal volume flow m3/h 1,5 2,1 3,3 4,5 5,6 7,0 9,0 11,0

Minimum volume flow m3/h 0,9 1,3 2,0 2,7 3,4 4,2 5,4 6,6

Noise level 3) dB(A) 59 62 63 65

Operating voltage V/Hz 3x400V/50Hz or 3x460V/60Hz

Refrigerant connections Rp 1” ID 1 1/4” ID 1 1/2” ID 2” ID

Weight (net) kg 300 330 440 480 670 710 780 850

Dimensions Width mm 1186 1541 1872 2220

Height mm 1755 2005

Depth mm 874

Technical data

The requirements for the cold water circulation and electrical

systems are designed in accordance with the specific applica-

tions of the customer. The refrigeration circulation system and

housing technology have been standardized. This guarantees a

quality for series production that is consistently high, yet flexible.

The production of our process chillers is subject to the following

EC directives/standards/regulations:

EC directives / ISO 9001 / EN 378 / VDE / BGV / UL / CSA

Your advantages at a glance:

• Compact modular design

• Exact coordination of components

• Reproducible quality

• Extreme resilience

• High performance with minimal energy use

• Low noise level

• Optimal service accessibility

• Outstanding price/performance ratio

• Competent contact partners with many years of experience in the

areas of project design, technology, sales, and service

Brief specification of the standard version:

• Compact housing for indoor setup, zinc-plated and powder-coated

• Air-cooled condenser for use with CFC-free refrigerantsR134a, R407C, and R404A

• Axial ventilator(s) with a crescent design, extremely low noise and maintenance-free

• Pressure-controlled ventilator adjustment

• Fully hermetic compressor, 100% suction cooling

• Evaporator as plate heat exchanger

• Thermostatic expansion valve

• High and low pressure switch

• Water circulation system with tank and pump, according to application-specific criteria

• Corrosion-resistant fixed piping in the water circulation system madeof copper or plastic, as well as stainless steel pumps

• Switching and control units completely wired

• Remote control and collective alarm function

• Microprocessor-controlled temperature control with digital nominal/actual display

• Automatic performance control

12 13

The water circulation system (piping, evaporator, and pumps) is designedfor a defined volume flow. A variety of pumps by renowned manufacturersare available for different performance levels. These pumps are selectedwith regard to the geometry of the housing and the design limits in termsof flow technology and capacity requirements.Depending on the requirements, the pipes used are made of copper or pla-stic (PVC or ABS), steel, or stainless steel. The material selection is basedon the flow rate and refrigerant, as well as pressure and transport flowtemperatures. All process chillers can be supplied with PVC piping uponrequest - this is standard as of PC 1401. PVC piping is optional for smallersystems. The use of ABS is recommended for water temperatures below 0 °C and outdoor installations.

The evaporatorThe evaporator usually is a plate heatexchanger soldered with copper.Depending on their design, these systemsrequire high internal flow rates. Thesehigh flow rates, which are generated bythe plate structure, the gap widths, andthe arrangement of the accessories,result in extremely good thermal transferperformance. At the same time, the highflow rate ensures that the narrow ductsdo not become clogged.

ElectronicsThe electronics are housed in a sealedcontrol box as part of the process chiller.The unit contains the complete powersupply for all components and the corre-sponding controls. For the planners andoperators of recirculating coolingsystems, RIEDEL offers system technologythat is highly efficient, yet uncomplicated.No specialized technical knowledge isrequired to operate the system if it is con-figured correctly.

System design criteriaThanks to the sophisticated design and component coordination in stan-dard RIEDEL process chillers, operators and planners do not need specia-lized technical knowledge. However, a more detailed examination of thecomponents is helpful for a general understanding.

Functional principle of a RIEDEL process chillerThe process chiller system is based on the interaction of three main com-ponents: the refrigerant circulation system, the water circulation system,and the electrical controls unit. The primary pump draws in the water thathas been warmed by the cooling receiver unit and moves it through theevaporator. Here, the liquid refrigerant has a counter-current flow withrespect to the water. Due to the different temperatures of the two materialflows, the refrigerant evaporates by absorbing the heat from the receiverunit. The now gaseous refrigerant is drawn up by the compressor and

For further information on the technology

1 Compressor, fully or semi-hermetic, with suction cooling2 Desuperheater for heat recovery to the process water tap3 Process water tap4 Condenser, air or water cooled for heat dissipation5 Liquid collector6 Filter drier7 Level indicator8 Expansion valve9 Evaporator, plate or tube bundle heat exchanger10 Liquid separator11 Primary pump, supplies the evaporator with a constant

water flow, independent of receiver needs12 Tank – integrated or separate, stainless steel or plastic,

size depends on purpose of application13 Secondary pump(s) – for supplying the receiver14 Customer system that needs to be cooled

The cooling and water circulation systems

Configuration of water circulation systemThe number of pumps and the size of the tanks as well as the number ofcirculation systems depend on the specific circumstances of the applica-tion and the customer specifications. Additional criteria include the requi-red accuracy of the cold water supply temperature, the load specifics, and

Circulation system components

1 Evaporator2 Primary pump3 Tank4 Receiver unit5 Heating unit6 Secondary pump7 Expansion tank

RIEDEL process chillers consist of three components, the “refrigerationcirculation system”, “water circulation system”, and “electrical controltechnology”, which are all fully integrated into a single housing. The coldwater is cooled with the help of a plate heat exchanger as the evaporator.Even the basic versions of RIEDEL chillers come fully equipped and readyto use. A comprehensive package of options is available to meet custo-mer-specific requirements, and in addition, specially customized solutionsare available. These systems cover a broad range of applications:Water temperatures from 8 ºC to 25 ºC, ambient temperatures from 5 ºC to50 ºC (refrigerant-dependent). Other application requirements can beaccommodated upon request. The careful coordination of all componentsmakes a broad range of applications possible, in contrast to the "one-size-fits-all" cooling systems, such as are intended for air-conditioning.

The refrigeration circulation systemThe refrigeration circulation system essentially consists of the evaporator,compressor(s), air-cooled condenser, collector, and the expansion valve.Water-cooled condensers are also available depending on process requi-rements. The compressors work in parallel to enable energy-saving partialload operation.Refrigeration circulation systems with refrigerants R134A or R407C (R404Aupon request). The compressor, ventilator, and evaporator components aresupplied by renowned manufacturers, and guarantee system reliabilitywith their proven design and global availability.

Integrated control panelThe control panel is integra-ted into the housing; it con-tains the electrical powercomponents and the micro-processor-controlled tempe-rature regulators, and isdesigned for industrial use.Control panel cooling is available for use in warmerclimates. Options are alsoavailable for outdoor installa-tions at more northerly latitu-des, and ventilation or hea-ting of the control panel might be useful or even essential, depending onthe ambient conditions. The corresponding equipment components areavailable upon request.

The refrigeration circulation system

1 Compressor in compound connection2 Flat plate evaporator (insulated)3 Condenser ventilators4 Energy-optimized piping of the

Refrigeration circulation system

The water circulation system

A TankB PumpC Overflow valveD Water filter (optional)

compressed, causing an increase in pressure and temperature. The refri-gerant also absorbs the kinetic energy of the compressor and releases itvia the condenser coil into the water or air as waste heat. As a conse-quence, the refrigerant is liquefied and passes through the liquid collector,filter drier, and level indicator before reaching the expansion valve. Thisvalve passes the liquid refrigerant into the evaporator depending on thetemperature levels. The circulation is now complete. The electrical unit includes the power supply as well as control and regu-lating systems that enable automatic operation.

the number of receiving units. The typical system configurations shownhere reflect RIEDEL's decades of experience with trouble-free cold-watercirculation systems.

Please refer to our data sheets for the exact specifications of our products. Our project engineers can advise you on all questions concerning coolingtechnology.

12

3

4

5678

9

1011

12

13

14

The water circulation systemThe components of the water circulation system are typically installed instable sheet metal housings. Any existing tank and pump systems on sitecan easily be integrated into the circulation system. The systems use stainless steel tanks with covers, pumps, float switches,pressure gauges, and water level displays as well as various system-spe-cific options.

A

B

CD

12

3

4

3 3

1

Plate heat exchanger(Number of plates dependson the cooling application)

1 Motor circuit breaker2 Control unit3 Main switch4 Control transformer

1

23

4

14 15

The water circulation system (piping, evaporator, and pumps) is designedfor a defined volume flow. A variety of pumps by renowned manufacturersare available for different performance levels. These pumps are selectedwith regard to the geometry of the housing and the design limits in termsof flow technology and capacity requirements.Depending on the requirements, the pipes used are made of copper or pla-stic (PVC or ABS), steel, or stainless steel. The material selection is basedon the flow rate and refrigerant, as well as pressure and transport flowtemperatures. All process chillers can be supplied with PVC piping uponrequest - this is standard as of PC 1401. PVC piping is optional for smallersystems. The use of ABS is recommended for water temperatures below 0 °C and outdoor installations.

The evaporatorThe evaporator usually is a plate heatexchanger soldered with copper.Depending on their design, these systemsrequire high internal flow rates. Thesehigh flow rates, which are generated bythe plate structure, the gap widths, andthe arrangement of the accessories,result in extremely good thermal transferperformance. At the same time, the highflow rate ensures that the narrow ductsdo not become clogged.

ElectronicsThe electronics are housed in a sealedcontrol box as part of the process chiller.The unit contains the complete powersupply for all components and the corre-sponding controls. For the planners andoperators of recirculating coolingsystems, RIEDEL offers system technologythat is highly efficient, yet uncomplicated.No specialized technical knowledge isrequired to operate the system if it is con-figured correctly.

System design criteriaThanks to the sophisticated design and component coordination in stan-dard RIEDEL process chillers, operators and planners do not need specia-lized technical knowledge. However, a more detailed examination of thecomponents is helpful for a general understanding.

Functional principle of a RIEDEL process chillerThe process chiller system is based on the interaction of three main com-ponents: the refrigerant circulation system, the water circulation system,and the electrical controls unit. The primary pump draws in the water thathas been warmed by the cooling receiver unit and moves it through theevaporator. Here, the liquid refrigerant has a counter-current flow withrespect to the water. Due to the different temperatures of the two materialflows, the refrigerant evaporates by absorbing the heat from the receiverunit. The now gaseous refrigerant is drawn up by the compressor and

For further information on the technology

1 Compressor, fully or semi-hermetic, with suction cooling2 Desuperheater for heat recovery to the process water tap3 Process water tap4 Condenser, air or water cooled for heat dissipation5 Liquid collector6 Filter drier7 Level indicator8 Expansion valve9 Evaporator, plate or tube bundle heat exchanger10 Liquid separator11 Primary pump, supplies the evaporator with a constant

water flow, independent of receiver needs12 Tank – integrated or separate, stainless steel or plastic,

size depends on purpose of application13 Secondary pump(s) – for supplying the receiver14 Customer system that needs to be cooled

The cooling and water circulation systems

Configuration of water circulation systemThe number of pumps and the size of the tanks as well as the number ofcirculation systems depend on the specific circumstances of the applica-tion and the customer specifications. Additional criteria include the requi-red accuracy of the cold water supply temperature, the load specifics, and

Circulation system components

1 Evaporator2 Primary pump3 Tank4 Receiver unit5 Heating unit6 Secondary pump7 Expansion tank

RIEDEL process chillers consist of three components, the “refrigerationcirculation system”, “water circulation system”, and “electrical controltechnology”, which are all fully integrated into a single housing. The coldwater is cooled with the help of a plate heat exchanger as the evaporator.Even the basic versions of RIEDEL chillers come fully equipped and readyto use. A comprehensive package of options is available to meet custo-mer-specific requirements, and in addition, specially customized solutionsare available. These systems cover a broad range of applications:Water temperatures from 8 ºC to 25 ºC, ambient temperatures from 5 ºC to50 ºC (refrigerant-dependent). Other application requirements can beaccommodated upon request. The careful coordination of all componentsmakes a broad range of applications possible, in contrast to the "one-size-fits-all" cooling systems, such as are intended for air-conditioning.

The refrigeration circulation systemThe refrigeration circulation system essentially consists of the evaporator,compressor(s), air-cooled condenser, collector, and the expansion valve.Water-cooled condensers are also available depending on process requi-rements. The compressors work in parallel to enable energy-saving partialload operation.Refrigeration circulation systems with refrigerants R134A or R407C (R404Aupon request). The compressor, ventilator, and evaporator components aresupplied by renowned manufacturers, and guarantee system reliabilitywith their proven design and global availability.

Integrated control panelThe control panel is integra-ted into the housing; it con-tains the electrical powercomponents and the micro-processor-controlled tempe-rature regulators, and isdesigned for industrial use.Control panel cooling is available for use in warmerclimates. Options are alsoavailable for outdoor installa-tions at more northerly latitu-des, and ventilation or hea-ting of the control panel might be useful or even essential, depending onthe ambient conditions. The corresponding equipment components areavailable upon request.

The refrigeration circulation system

1 Compressor in compound connection2 Flat plate evaporator (insulated)3 Condenser ventilators4 Energy-optimized piping of the

Refrigeration circulation system

The water circulation system

A TankB PumpC Overflow valveD Water filter (optional)

compressed, causing an increase in pressure and temperature. The refri-gerant also absorbs the kinetic energy of the compressor and releases itvia the condenser coil into the water or air as waste heat. As a conse-quence, the refrigerant is liquefied and passes through the liquid collector,filter drier, and level indicator before reaching the expansion valve. Thisvalve passes the liquid refrigerant into the evaporator depending on thetemperature levels. The circulation is now complete. The electrical unit includes the power supply as well as control and regu-lating systems that enable automatic operation.

the number of receiving units. The typical system configurations shownhere reflect RIEDEL's decades of experience with trouble-free cold-watercirculation systems.

Please refer to our data sheets for the exact specifications of our products. Our project engineers can advise you on all questions concerning coolingtechnology.

12

3

4

5678

9

1011

12

13

14

The water circulation systemThe components of the water circulation system are typically installed instable sheet metal housings. Any existing tank and pump systems on sitecan easily be integrated into the circulation system. The systems use stainless steel tanks with covers, pumps, float switches,pressure gauges, and water level displays as well as various system-spe-cific options.

A

B

CD

12

3

4

3 3

1

Plate heat exchanger(Number of plates dependson the cooling application)

1 Motor circuit breaker2 Control unit3 Main switch4 Control transformer

1

23

4

14 15

Test laboratoryTube-bending center

16

Prototype construction

Coil punching system

17

Powder coating

Punch lineA state-of-the-art production facility of over 20.000 m2 In-house development

Laser-aided sheet metal processing

Custom-tailored cooling…

Certified quality, Made in Germany

With the use of proven cooling system components, RIEDEL equipment is particularly resistant to

failure and extremely safe and durable thanks to our highly qualified production system. As a well-

known manufacturer in the global market, RIEDEL uses highly efficient technology and state-of-the-

art production methods.

This includes KAIZEN – optimized stand-alone manufacturing, automated precision welding and

bending facilities, powder coating, computer-aided assembly stations, and testing equipment for

simulations under authentic user operating conditions. RIEDEL’s consi-

stently high level of quality is guaranteed by certified compli-

ance with DIN EN 9001 and 14001 standards, as well as

according to relevant norms and regulations such as EN

378, EN 60204, UVV, and VBG and certification in line

with international standards UL, CSA, CE, EMC, 2M2.

This is supplemented by holding regular quality control

(Deming) circles in all areas.

Test laboratoryTube-bending center

16

Prototype construction

Coil punching system

17

Powder coating

Punch lineA state-of-the-art production facility of over 20.000 m2 In-house development

Laser-aided sheet metal processing

Custom-tailored cooling…

Certified quality, Made in Germany

With the use of proven cooling system components, RIEDEL equipment is particularly resistant to

failure and extremely safe and durable thanks to our highly qualified production system. As a well-

known manufacturer in the global market, RIEDEL uses highly efficient technology and state-of-the-

art production methods.

This includes KAIZEN – optimized stand-alone manufacturing, automated precision welding and

bending facilities, powder coating, computer-aided assembly stations, and testing equipment for

simulations under authentic user operating conditions. RIEDEL’s consi-

stently high level of quality is guaranteed by certified compli-

ance with DIN EN 9001 and 14001 standards, as well as

according to relevant norms and regulations such as EN

378, EN 60204, UVV, and VBG and certification in line

with international standards UL, CSA, CE, EMC, 2M2.

This is supplemented by holding regular quality control

(Deming) circles in all areas.

18 19

Service, Made in Germany

Environmental management– Made by RIEDEL

Professional planning, project engineering, manufacturing,

on-time delivery and the highest standards of service: RIEDEL

meets these demands every day, and has become a partner that

you can rely on.

Thanks to over 35 RIEDEL service partners, concentrated in

Europe, North America, South America, and Asia, we can be

present anywhere in the world within hours, 24/7.

RIEDEL knows how much is at stake when a facility fails, and

offers high-tech online service that allows us to monitor and

maintain your facilities. Precision systems will control and

regulate your equipment on-site or remotely online from

anywhere in the world.

Since all technology – even the very best – suffers from gradual

wear and tear, RIEDEL has put together a comprehensive service

package ranging from inspection and maintenance to facility

cleaning.

RIEDEL employees view environmentally friendly actions as a

natural and essential part of our corporate responsibility.

Ecological criteria have an important impact on development in

the production process, from the selection of raw materials and

refrigerants, through to the shipment of RIEDEL cooling equipment

to the customer.

You can rest assured that RIEDEL cooling machines and cold

water units meet both environmental and economic requirements.

RIEDEL considers the implementation of German statutory require-

ments as an economic investment in the future. RIEDEL ecologi-

cal efficiency has already shown positive side effects, such as

energy and raw materials savings, recycling of waste material,

utilizing waste heat, and waste heat recovery.

RIEDEL employees constantly bear one thought in mind:

we only have this one world, and RIEDEL shares responsibility for

its protection.

Participating in many markets around the world…

RIEDEL cooling technology can be found everywhere in the world.

In addition to RIEDEL customers in Germany, RIEDEL maintains

customer relationships in the majority of foreign markets.

On a foundation of strong relationships with customers in

Germany, plant engineers, equipment manufacturers, and produ-

cers of medical devices, RIEDEL operates a global cooling busi-

ness where borders are no obstacle.

RIEDEL has specialized expertise, experience, and contacts in

many different countries, all of which is indispensable for pro-

blem-free project implementation. RIEDEL guarantees that custo-

mers benefit from our efficient planning, complete component

coordination, manufacturing, installation, and professional custo-

mer service.

18 19

Service, Made in Germany

Environmental management– Made by RIEDEL

Professional planning, project engineering, manufacturing,

on-time delivery and the highest standards of service: RIEDEL

meets these demands every day, and has become a partner that

you can rely on.

Thanks to over 35 RIEDEL service partners, concentrated in

Europe, North America, South America, and Asia, we can be

present anywhere in the world within hours, 24/7.

RIEDEL knows how much is at stake when a facility fails, and

offers high-tech online service that allows us to monitor and

maintain your facilities. Precision systems will control and

regulate your equipment on-site or remotely online from

anywhere in the world.

Since all technology – even the very best – suffers from gradual

wear and tear, RIEDEL has put together a comprehensive service

package ranging from inspection and maintenance to facility

cleaning.

RIEDEL employees view environmentally friendly actions as a

natural and essential part of our corporate responsibility.

Ecological criteria have an important impact on development in

the production process, from the selection of raw materials and

refrigerants, through to the shipment of RIEDEL cooling equipment

to the customer.

You can rest assured that RIEDEL cooling machines and cold

water units meet both environmental and economic requirements.

RIEDEL considers the implementation of German statutory require-

ments as an economic investment in the future. RIEDEL ecologi-

cal efficiency has already shown positive side effects, such as

energy and raw materials savings, recycling of waste material,

utilizing waste heat, and waste heat recovery.

RIEDEL employees constantly bear one thought in mind:

we only have this one world, and RIEDEL shares responsibility for

its protection.

Participating in many markets around the world…

RIEDEL cooling technology can be found everywhere in the world.

In addition to RIEDEL customers in Germany, RIEDEL maintains

customer relationships in the majority of foreign markets.

On a foundation of strong relationships with customers in

Germany, plant engineers, equipment manufacturers, and produ-

cers of medical devices, RIEDEL operates a global cooling busi-

ness where borders are no obstacle.

RIEDEL has specialized expertise, experience, and contacts in

many different countries, all of which is indispensable for pro-

blem-free project implementation. RIEDEL guarantees that custo-

mers benefit from our efficient planning, complete component

coordination, manufacturing, installation, and professional custo-

mer service.