FEDEGARI STEAM WASHER · The movement of the chamber door can be vertical or horizontal sliding,...

FUNCTIONAL DESIGN SPECIFICATION

DOCS-#367675-v3-FSW_specification

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FEDEGARI STEAM WASHER

Position Name

Date (dd-mmm-yyyy)

Signature

Written by: Process Eng. Dep FRG 28/01/2015

Verified and approved by:



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PAGE INTENTIONALLY LEFT BLANK



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CONTENTS 1 INTRODUCTION ......................................................................................................................................4

2 COMPLIANCE WITH REFERENCE STANDARDS AND DIRECTIVES .................................................5

3 BASIC CONFIGURATION .......................................................................................................................6

3.1 MAIN COMPONENTS ...................................................................................................................6

3.1.1 WASHING CHAMBER ........................................................................................................7

3.1.2 DOORS AND SEALING SYSTEM ......................................................................................8

3.1.3 WASHER FRAMEWORK AND TECHNICAL AREA...........................................................9

3.1.4 ELECTRICAL SYSTEM ......................................................................................................9

3.1.5 ELECTRICAL CABINET .....................................................................................................9

3.1.6 HYDRAULIC AND PNEUMATIC SYSTEM .........................................................................4

3.1.7 PROCESS CONTROLLER WITH INTEGRATED OPERATOR PANEL ............................9

3.1.8 INTERNAL AND EXTERNAL TROLLEY (OPTION) .........................................................10

3.1.9 SAFETY DEVICES ............................................................................................................10

3.1.10 STEAM GENERATOR (OPTION) .....................................................................................10

3.1.11 DOSING SYSTEM .............................................................................................................10

3.1.12 CONDUCTIVITY METER ..................................................................................................10

3.2 UTILITIES ....................................................................................................................................11

3.2.1 ELECTRICAL MAINS POWER .........................................................................................11

3.2.2 COMPRESSED AIR ..........................................................................................................11

3.2.3 HOT AND COLD WATER .................................................................................................11

3.2.4 WFI / PURIFIED / DEIONIZED / DEMINERALIZED WATER ...........................................11

3.3 PROCESSES ...............................................................................................................................12

3.4 OTHER TECHNICAL FEATURES ...............................................................................................12

3.5 TECHNICAL DOCUMENTATION ...............................................................................................13

4 PROCESS CONTROLLER ....................................................................................................................14

5 WASHING AND TEST PROGRAMS .....................................................................................................15

6 ADDITIVES .............................................................................................................................................16

6.1 ALKALINE CLEANERS ...............................................................................................................16

6.1.1 GENERAL PROPERTIES .................................................................................................16

6.1.2 RANGE OF APPLICATION ...............................................................................................16

6.1.3 PROPERTIES ....................................................................................................................16

6.1.4 DOSING .............................................................................................................................17

6.1.5 MATERIAL COMPATIBILITY ...........................................................................................17

6.1.6 CYCLE INDICATION .........................................................................................................17

6.1.7 DISPOSAL .........................................................................................................................17

6.2 ACID CLEANERS ........................................................................................................................17

6.2.1 GENERAL PROPERTIES .................................................................................................17

6.2.2 RANGE OF APPLICATION ...............................................................................................17

6.2.3 PROPERTIES ....................................................................................................................17

6.2.4 DOSING .............................................................................................................................18

6.2.5 MATERIAL COMPATIBILITY ...........................................................................................18

6.2.6 CYCLE INDICATION .........................................................................................................18

6.2.7 DISPOSAL .........................................................................................................................18

7 OPTIONS ...............................................................................................................................................19

7.1 OPTIONS .....................................................................................................................................19

8 ADDITIONAL TECHNICAL DOCUMENTATION ...................................................................................22

8.1 PACKING .....................................................................................................................................22

8.2 ACTIVITIES ..................................................................................................................................22



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1 INTRODUCTION The washer unit combines excellent performances with first class quality materials, economical consumption, safety and ease of operation. Thanks to its dedicated process controller and to its special design that allows the heating of the water with steam injection directly in the chamber, this machine is suitable for use in many different applications. The machine can be equipped with a built-in steam generator and therefore there is no need of heating elements in the chamber. The use of steam minimizes the dose of detergents, the number of rinses and consequently energy and water consumption. This eco-friendly solution reduces the operational costs and improves the washing performances. All the components used are sanitary. The washer has been specially designed with ergonomic features for easy handling of the load. It can be used for standard processes and it is easy to configure, thanks to its design concept and modular construction with a series of interesting and exclusive optional trays. The fully modular and customizable stainless steel (AISI 316L) internal racks are automatically connected to the washer feeding pipe. Spray arms and nozzles are located both in the rack and in the chamber walls to guarantee a perfect washing. Several standard and optional features are included to monitor the process parameters, e.g.: process monitoring of pump pressure, control of the detergent injection, final rinse water quality and rotation arm check. This monitoring ensures a direct bearing on the quality of the cleaning validation and on the cleaning results. The dedicated touch-screen process controller enables simple and extremely intuitive communication, without specific IT knowledge. The software is fully validated and is suitable to be used by the most demanding applications. The dedicated process controller has a wide range of customizable washing cycles. The alarms are audible and visible: an internal LED lamp is operative during the whole cycle and it highlights the presence of an alarm by the LED color change. The unit is equipped with precision pumps which injects acid/chemical additives directly in the chamber.

�� Note

Fedegari reserves the right to modify this document at any time without prior notice.



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2 COMPLIANCE WITH REFERENCE STANDARDS AND DIRECTIVES All washing units are designed, manufactured and tested in compliance with: the following Directives / Regulations:

• Directive 2006/42/EC, Safety of machinery;

• Directive 2004/108/EC, and amendments, Electromagnetic compatibility;

• Directive 2006/95/EC, and amendments, Low-voltage devices (Low tension equipment); the following Standards:

• EN ISO 12100 Safety of machinery – General principles for design – Risk assessment and risk reduction;

• EN ISO 13857 Safety of machinery – Safety distances to prevent hazard zones being reached by upper and lower limbs;

• EN 61326-1 Electrical equipment for measurement, control and laboratory use – EMC requirements - Part1: General requirements;

• EN 62304 Medical device software – Software life-cycle processes;

• EN IEC 61010-1 Safety requirement for electrical equipment for measurement, control and laboratory use - Part 1: General requirements.

• UL 61010-1 Electrical equipment for measurement, control and laboratory use; Part 1: General Requirements.



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3 BASIC CONFIGURATION The new FSW machine is a fully automatic horizontal free standing washing unit. Basic configuration is outlined as follows: Chamber

Cross-section Quadrangular Orientation Horizontal Opening useful dimensions Custom

Loading type Frontal Washing chamber closure system Vertically /horizontal automatic sliding door pneumatically operated,

mechanical and pneumatic locking system

Process control Automatic with Thema4 Operator interface Colour Touch-Screen Construction material

Internal chamber 316L stainless steel Door Glass and 316 stainless steel (frame) Hydro-pneumatic system 316L stainless steel Support frame 304 stainless steel External electrical cabinet Carbon steel painted (Option: 304 stainless steel)

Temperature sensors RTD Pt100 Pressure sensors Pressure transducer Electrical cabinet Protection grade IP54

3.1 MAIN COMPONENTS The FSW unit consists of the following main components:

• Washing chamber

• Door and sealing system

• Washer framework and technical area

• Electrical system

• Electrical cabinet

• Hydraulic and pneumatic system

• Process controller with integrated operator panel

• Internal and external trolleys (optional)

• Safety devices

• Steam generator or external heat exchanger (optional)

• Dosing additives system



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3.1.1 WASHING CHAMBER The washing chamber is single walled, horizontal, and made entirely of 316L. It is TIG welded with mirror finish (BA = Bright Annealed), such finishing respects the electro polishing standard. The chamber is insulated with special non-toxic material with high insulating efficiency. The washing chamber as option can be provided with the 316L internal removable trolley, designed and manufactured in-house by Fedegari. There is a wide selection of washing trolleys available, special racks can be designed to meet any specification requirement.

Figure 1: Example of trolley



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3.1.2 DOORS AND SEALING SYSTEM

Figure 2: Schematic picture of the door

Door made of glass with the perimeter reinforcement made of 316L stainless steel.

Figure 3: Schematic picture of the gasket detail

The door is operated automatically via the process controller. The door is made of glass with the perimeter reinforcement made of 316L stainless steel. The opening and closing of the chamber door are subject to a series of hardware safety devices and software checks, which ensure that door movement can only occur under absolutely safe conditions. The movement of the chamber door can be vertical or horizontal sliding, for closing/opening. The opening of the chamber door is driven by a pneumatic piston and an associated solenoid valve operated by the process controller. Compressed air at 5–6 bar is fed into the piston, the washer is equipped with door status switches. This ensures that the vertical or horizontal sliding movement is gentle and progressive. All the components of the door system are suitably protected and encased. The door is equipped with a silicone inflatable seal, with a specific design to ensure the perfect washing and drying of the area surrounding the profile.



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3.1.3 WASHER FRAMEWORK AND TECHNICAL AREA The washer framework supports the chamber and all its associated components. The frame is made of 304 stainless steel box section, while the external washer panelling is 304 stainless steel sheet with “Scotch Brite” finish. The whole washer stands on a set of solid feet, which are adjustable to facilitate the levelling of the washer during installation. The hydraulic and electrical systems, automatic valves, steam generator (optional), water pressurisation pump (optional) and other components are all contained in the washer technical area, which makes it extremely compact and functional.

3.1.4 ELECTRICAL SYSTEM The system includes the electrical cabinet, all the control lines of the electro-hydraulic and electro-pneumatic actuators, the motors, the electronic process controller and the steam generator (optional). The system also connects the process controller to sensors, transducers (e.g., pressure switches, temperature probes, etc.) and to the operator panels. It also provides the primary power supply and the corresponding protection system. The electrical system of the washer is built in accordance with the applicable standards (see paragraph 2). As standard, the washer is designed to operate on a three-phase electrical power supply (with neutral) L1/L2/L3/N/PE at 400 Vac, 50 Hz. Other power supply requirements can be selected as an option.

3.1.5 ELECTRICAL CABINET All electrical components, except for some used for control and measurement purposes, are contained in the electrical cabinet. The cabinet has IP54 protection and is located inside the technical compartment. It is made from steel plate, RAL 7035 painted and orange-peel surface finished. All the electrical components are certified and internationally available. The main power switch is designed to prevent the cabinet from opening when it is in ‘ON’ position (certified component, compliant with the applicable standards) and when in ‘OFF’ position it will isolate all electric power from the washer. Reset requires the manual operation. All the control and monitoring circuits operate at low voltage and are identified by specific coloured cabling.

3.1.6 HYDRAULIC AND PNEUMATIC SYSTEM The hydraulic and pneumatic system includes piping, electric valves, pneumatic valves and electro-pneumatic valves. All the parts connected to the washing chamber are made of 316L, PTFE, silicone, FKM and PEEK. All the valves and pipe connections used in the hydraulic/pneumatic system are of sanitary design. The supply-lines of the process fluids, like the chamber discharge drain, are protected by inspected in-line filters made of stainless steel. All the hydraulic and pneumatic components in contact with concentrated or diluted additives are fully compatible with alkaline and acid cleaners.

3.1.7 PROCESS CONTROLLER WITH INTEGRATED OPERATOR PANEL The electronic process controller is composed by a graphic Touch-Screen connected to a thermal printer. The thermal printer is located underneath the operator panel on the front side of the washing unit. The printer is used primarily to print out the cycle data in real time on the basis of configurable parameters, which enable the print-out and its print rate. The controller, together with specific hardware blocks and other electronic equipment, provides total control of the washer and of the activities related to interactive communication with the operator. The process controller is thoroughly described in Section 4.



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3.1.8 INTERNAL AND EXTERNAL TROLLEY (OPTION) The FSW washing unit is supplied with rails installed in the lower part of the chamber to load the internal trolley. The rails inside the chamber, are designed in order to avoid any “water pool” and so facilitate the drying of the internal parts. FSW washing unit can be provided with several optional loading/unloading accessories selected according to the type and size of the load to be washed. FSW washing unit can be provided with external transfer trolleys.

3.1.9 SAFETY DEVICES Specific and suitable devices are installed to prevent risks for operators and environment.

3.1.10 STEAM GENERATOR (OPTION up to max 2000 lt of chamber volume) This option is required in case a steam supply line is not available. The steam generator is made of 316L and is fitted with all the required monitoring instruments and safety devices. The water used in the steam generator must at least be deionised in order to minimize the formation of deposits. Recommended characteristics are:

• Conductivity: 1 - 30 µS/cm (suggested 15 µS/cm) at 25°C

• TOC < 500 ppb

• pH: 6.0 - 7.5

• Chlorides max.: 30 ppm

• Pressure: 4.5 barg. If not available, it is necessary a water pressurization pump (optional).

3.1.11 DOSING SYSTEM The additive dosing system is composed by 2 additive tanks connected to the washing chamber through 2 precision dosing pumps. Once the additive is injected in the chamber, we perform a double check: a conductivity meter, located on the recirculation circuit, is used to compare the conductivity value of the water with a reference table memorized inside the controller (by a dedicated operation made during the validation), if the value is out from the foreseen range, the TH4 will adjust the dosing accordingly to the feedback received. The pumps are fully compatible with alkaline and acid additives. The dosing system is located on the side of the machine and it is managed by the process controller. It is possible to install as option up to 3 additional additives tanks with the related pipework: tank 3 tank 4 and tank 5. It is possible to install an optional, external dosing pump which allows the refilling of the internal additive tanks from an external tank provided by customer additive tank, in order to avoid the replacement of the internal tank.

3.1.12 CONDUCTIVITY METER A conductivity meter is located on the drain line in order to measure the rinse water conductivity during the final rinse. Rinses are automatically repeated until the conductivity is lower than a pre-established set point, or until a maximum number of rinses have been completed. If the conductivity set-point is not reached in the fixed number of rinses, then the Control System gives an alarm.



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3.2 UTILITIES The FSW requires the following utilities:

• Electrical mains power

• Compressed air

• Quality water

• Purified water ( to feed steam generator if selected )

• Clean steam

3.2.1 ELECTRICAL MAINS POWER The standard power supply is:

• voltage: 400 Vac – 3 phase + N + PE

• frequency: 50 Hz

• Installed power: according to the model

�� Note

As option different power supply is available.

3.2.2 COMPRESSED AIR The compressed air is necessary for the automatic doors with pneumatic movement system and for the automatic valves operation. The compressed air used for doors and pneumatic valves (instrument air) must be clean, dry and oil-free available at a pressure of 5 to 6 barg.

3.2.3 HOT AND COLD WATER The quality of the water depends on the washing requirements and on the washing phase in exam.

3.2.4 WFI / PURIFIED / DEIONIZED / DEMINERALIZED WATER The mentioned types of water are required to feed the electrical steam generator in order to produce high-quality steam. Moreover, the use of WFI/purified water during the washing phases improves the cleaning performances and reduces cleaner consumption (see Paragraph 3.4 and Section 6). In particular, it is recommended to perform the final rinse with WFI/purified water.

A B C D



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3.3 PROCESSES FSW washing unit can perform different washing processes, which are configured by different washing cycles: those are selected by the operator depending on the soil and/or load to be treated. The standard available program structures can be classified as programs dedicated to a specific purpose and, in general, these programs can be adapted to the most common types of soils to be washed. The main phases of a washing process are the following:

• Pre-washing water or steam

• Washing using water or alkaline additives

• Rinsing

• Washing using water or acid additives

• Rinsing

• Drying

• Cooling The pre-washing with steam, in many cases has an important emollient effect on the soils. A strong emollient action allows to reduce the quantity of additives used in the process as well as energy and water consumption, improving the washing performances and reducing the number of rinses. The pre-washing with steam cannot be applied to heat sensitive load and to certain residues, e.g. active proteins. In such cases, the pre-washing phase must be performed with cold water and, if necessary, the dosing of the appropriate additive. It follows a washing with the addition of an appropriate alkaline cleaner. The water re-circulates for a pre-established time interval. Alkaline additives have excellent dirt-removing and dispersing properties. The dose of additive is function of the cleaner itself and of the nature and quantity of residues (see Section 5). Generally this washing is performed with hot water. For neutralization of alkaline residues, an acidic rinse should always follow the cleaning steps. It is important to take care of a complete drainage before neutralization, we recommend to perform an intermediate rinse between alkaline and acid washing. Generally the dose of acid cleaner is one third of the alkaline one and the washing temperature is lower than the temperature of the alkaline step. The water re-circulates for a pre-established time. A series of rinses with water re-circulation is performed in order to reach the expected level of cleaning. The necessary number of rinses can be established through conductivity measurements. We recommend to use WFI or purified water for the final rinsing. For non-heat sensitive load, a phase of heat transfer to the load can be applied through steam injection directly in the chamber. This step allows to speed the following drying phase. The drying step takes place through hot air injection directly in the chamber. A final step of cooling can be performed. Water and air are heated by steam. The use of steam allows the absence of any heating element in the chamber, making easy the cleaning of the chamber. Depending on the nature and quantity of the residues, the washing processes are optimized varying:

• the washing time interval,

• the additive concentration,

• the water temperature,

• the number of rinses,

• the sequences of the phases.

3.4 OTHER TECHNICAL FEATURES All process piping and hydraulic components are made of 316L with sanitary-type couplings with Fedegari tri-clamps. The inlets of the process fluids and the chamber drain are protected by stainless steel removable mesh strainers which can be easily maintained. A stainless steel mesh filter is installed upstream of the recirculation pump to prevent any damage due to objects that could be sucked. Another stainless steel filter is installed downstream of the recirculation pump to protect the chamber spray nozzles, from small particles coming from the load.



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All automatic valves in 316L stainless steel of sanitary diaphragm type with pneumatic actuator for maximum reliability and tightness.

• The FSW washing is equipped (as standard) with: - an RTD Pt100 fixed temperature probe placed at the chamber bottom drain (coldest point); - an RTD Pt100 flexible temperature probe fixed in the chamber; - a pressure transducer to monitor the correct flow rate of the circulation pump; - an RTD Pt100 flexible temperature probe fixed in the steam generator; - upper, lower and lateral wall chamber spray arms rotation check.

• The FSW unit is equipped with: - conductivity meter on the drain line; - conductivity meter on the external water circulation system.

• All pipework operating at elevated temperatures are insulated with non-toxic material.

3.5 TECHNICAL DOCUMENTATION As standard, each FSW washing unit will be delivered with:

• Technical Manual in English or Italian (one soft copy)

• User and Maintenance Manual in English or in the language required, if available (one hard copy and one soft copy)

• Thema4 Installation Manual in English (one hard and one soft copy)

• Thema4 software (installer on USB device) Soft copies are supplied in pdf format on a USB device.



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PROCESS CONTROLLER

THEMA4 CONTROL SYSTEM - FUNCTIONAL DESIGN SPECIFICATION (For Information only)



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4 WASHING AND TEST PROGRAMS The cycles are completely configurable by the user according to the requirement. Up to 9999 ready-for-use cycles may be simultaneously stored for production

CYCLE ( example )

Program description

Cycle for non heat-sensitive load

Pre-Cleaning with steam injection in the chamber:

Cleaning with injection of alkaline additive (~ 0.6%) and water re-circulation with strong mechanical action: ~ 40÷50 °C for

Intermediate rinsing

Neutralization with injection of acid additive (~ 0.2%) and water re-circulation: ~ 30 °C

Rinses

Heat transfer with steam injection in the chamber

Drying phase with hot air injection

DUTY CYCLES

ADDITIVES CIRCUIT CLEANING CYCLE

Program description

This program allows the cleaning of the connection lines between the additives tanks and the chamber. Fedegari recommends to perform this cycle when a tank is used up and/or in case of replacement of the additive model. In order to perform this process, replace the detergent tank with a tank containing water.

CHAMBER CLEANING CYCLE

Program description

This program allows the washing and drying of the chamber of washing unit.

ADDITIVE FILLING TANK CYCLE (OPTIONAL)

Program description

This cycle allows to fill the additive tank located in the machine through a dedicated external pump connected to an external additive tank. (To avoid the replacement of the internal tank). Moreover this process allows the cleaning of the connection lines between the additives tanks and the external filling tank. Fedegari recommends the customer to connect the connection lines in use with a tank containing water. It is recommended to repeat this process every time the external pump is used.



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�� Note

Loading the load, selecting the cycle to be performed, closing and locking of the door; these operations precede the washing cycle in strict sense, as well as final door opening and unloading the load. Thema4 process controller does not automatically perform these operations.

ADDITIVES Fedegari recommends a proper loading of the load in (avoid overloading) in order to ensure all washing goods come into contact with the cleaners during the process.

4.1 ALKALINE CLEANERS

4.1.1 GENERAL PROPERTIES Alkaline cleaners remove organic and inorganic residues and contamination from laboratory glass and reusable laboratory material. They present excellent dirt-removing and dispersing properties. Highly alkaline cleaning concentrates are used to remove heavy contamination like dried or burnt-in analysis- and synthesis-residues. With the addition of surface active substances, alkaline cleaners are able to remove stubborn and oily residues such as oils, silicon oils, fats and other lipophilic substances.

4.1.2 RANGE OF APPLICATION They are suitable for a wide range of applications in:

• Chemical laboratories

• Biological laboratories

• Pharmaceutical industries

• Food industries

• Cosmetic industries

• Petrochemical industry Due to the product’s phosphate-free formula, they are particularly suitable in phosphate critical cleaning processes (analytical chemistry).

4.1.3 PROPERTIES They have to feature the following characteristics: liquid (ideal for automated dosage), alkaline, phosphate-free. They are suitable to remove the most different kinds of contamination, e.g.:

• Analysis-residues

• Dried synthesis-residues like polymers or organic agents

• Organic and inorganic salts

• Greases

• Oils

• Pigments

• Blood

• Residues of tissue

• Residues of proteins The addition of surfactants to alkaline cleaners has a high emulsifying capacity and enhances the removal of bitumen, pigments, Vaseline and paint residues. Moreover surfactants improve the rinsing properties.



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4.1.4 DOSING The optimum dosage depends mainly on the hardness of the water and the nature of the contamination. In principle, the use of softened feed water improves the cleaning performances and reduces cleaner consumption.

4.1.5 MATERIAL COMPATIBILITY Generally suitable for: stainless steel, laboratory glass, ceramics, and synthetic materials. Generally not suitable for: aluminium, anodised aluminium, zinc, non-ferrous metals, rubber. Please refer to the supplier of the alkaline cleaners.

4.1.6 CYCLE INDICATION Generally, an increase of the temperature leads to a reduction of the cleaning process time. According to a rule of thumb, raising the temperature by 10 °C cuts the cleaning process time in half, and vice versa. In practice, the cleaning time is usually 2÷5 min at a temperature of 60 °C.

4.1.7 DISPOSAL None. Follow the instruction of the supplier of the alkaline cleaners.

4.2 ACID CLEANERS

4.2.1 GENERAL PROPERTIES Acid cleaners can be used in combination with all alkaline cleaning products for universal application in laboratories: free of surfactants and mildly acidic neutralizers based on organic acid are applied after the cleaning step in order to remove alkaline residues. They can also be used as pre-cleaners to remove acid soluble deposits.

4.2.2 RANGE OF APPLICATION Acid cleaners are suitable for a wide range of applications in:

• Chemical laboratories

• Biological laboratories

• Pharmaceutical industries

• Food industries

• Cosmetic industries

• Petrochemical industry Due to the product’s phosphate-free formula, they are particularly suitable as neutralizers in phosphate critical cleaning processes (analytical chemistry).

4.2.3 PROPERTIES They have to feature the following characteristics: liquid (ideal for automated dosage), phosphate-free. They can be used in completely phosphate-free processes.



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4.2.4 DOSING The optimum dosage depends mainly on the quantity of alkaline residues of the cleaning product. In practice, the neutralizer concentration corresponds to 1/3 of that of the alkaline cleaner, normally 0.2÷1.0% (v/v).

4.2.5 MATERIAL COMPATIBILITY Generally suitable for: stainless steel, aluminium, anodised aluminium, synthetic materials, rubber, latex, laboratory glassware, ceramic materials. Please refer to the supplier of the acid cleaners.

4.2.6 CYCLE INDICATION Each alkaline cleaning step should be followed by an acid rinse to neutralize alkaline residues due to carry-over. It is important to perform a complete drain before the neutralization phase, it is recommended an intermediate rinse between the alkaline and the acid washing. It can also be used to remove acid soluble deposits during a pre-cleaning phase. The cleaning temperature is 20÷50 °C.

4.2.7 DISPOSAL None. Follow the instruction of the supplier of the acid cleaners.



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5 OPTIONS

5.1 OPTIONS

• 1 OR 2 ADDITIVE FILLING TANK(S) OPTION Two optional, additional additives tanks with the related pipework: tank 4 and tank 5.

• EXTERNAL ADDITIVE FILLING TANK External precision dosing pump which allows to connect an external additive tank to the internal additive tanks to in order to re-fill them and avoid their replacement. This operation is managed by the process controller through the ‘additive filling tank cycle’ (see the paragraph 5). Moreover this process allows the cleaning of the connection lines between the additives tanks and the external filling tank. We advice the customer to connect the connection lines in exam with a tank containing water. It is recommended to repeat this process every time the external pump is used.

• TOC Total Organic Carbon (TOC) analysis is performed through the TOC Sensor 4000TOC Mettler Toledo. - The rinse water conductivity is first measured during the final rinse using a conductivity meter

(external to the TOC sensor), located on the drain line. Rinses are automatically repeated until the conductivity is lower than a pre-determined set point that is within the operating range of the TOC analyser (2 µS/cm).

- After this step, the TOC monitoring system is activated and a controlled amount of final rinse water is directed to the TOC sensor assembly through an isolation valve.

- The TOC sensor uses ultraviolet oxidation to determine the TOC concentrations in the final rinse water sample. Built-in conductivity sensors provide continuous conductivity measurement before and after sample oxidation; TOC final results are derived from conductivity readings.

- Once the sampling time has elapsed, the measured TOC value is transmitted to the washer Control System. The control can be programmed to repeat the rinse phase until the set point has been reached, or until a maximum number of rinses have been completed. If the TOC set-point is not reached in the fixed number of rinses, then the Control System gives an alarm.

- The TOC analysis is fully managed by TH4.

• CUSTOM TROLLEY The FSW unit can be provided with several optional accessories, such as trays and baskets, selected according to the type, shape and dimension of the load to improve washing performances. All the loading accessories are made of 316L stainless steel, and are equipped with handles to facilitate the ease of handling. All the accessories are manufactured in-house by Fedegari. Some example are listed below.



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Figure 4: Schematic picture of an internal trolley

Figure 5: Schematic picture of an internal trolley



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Figure 6: Schematic picture of the external transfer trolley



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6 ADDITIONAL TECHNICAL DOCUMENTATION To be defined.

6.1 PACKING Packing with wooden case Packing with seaworthy box Standard packing for external trolley / rack

6.2 ACTIVITIES To be defined.

FEDEGARI STEAM WASHER · The movement of the chamber door can be vertical or horizontal sliding,...

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