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Operation Manual of Dental Unit & Chair

Model: Narsis

For further information, answering your questions or in

case of any problem in the unit, please contact:

com.firoozdental@parviz

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Index

Title Page Definitions 3 Preparation 5 Installation 9 Adjustments 15 Operation 17 Maintenance and Service 24 Checking Tips 26 No Guarantee 29 Specifications 30 Appendix 31

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The Unit - Delivery tray - Cuspidor bowl - Tray arm - Cup-filler - Light - Saliva ejector - Light arm - Main box - Foot control - Power box

Delivery tray

Tray arm

Light arm

Light

Saliva ejector

Main box

Cuspidor bowl

Cup-filler

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Chair 1- Upholstery 2- Back rest 3- Head rest 4- Arm rest 5- ABS covers 6- Seat 7- Chassis 8- Electromotors 9- Electrical parts

Arm rest

Upholstery

Head rest

ABS

Back rest

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Preparation Dimensions and installation plans are as followed:

- There should be a 1 meter distance to wall from each side.

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Rotation angles of joints:

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Vertical dimensions:

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Power box and location of pipes for air, water and drain:

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Water input hose (ID): 10mm – hose fitting 1/2" Input water pressure: 2.5 – 3 bar Air input hose (ID): 10mm – hose fitting 1/2" Input water pressure: 8 bar Drain pipe (ID): 4mm Input power: 220VAC – 50Hz – 6A

Installation - According to dimensions and installation plans, locate the unit in its place. Unscrew 2 screws on the lower sides of the chair to open the lower ABS cover.

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- Unscrew 2 screws form the bottom side of the chair to remove the wooden packing.

- Unscrew 2 screws from the sides of power supply box to open its upper cover. Put the box on the water/ air/ drain pipes. Then screw the case to the floor from 4 points.

Pierce & screw.

Water & air inputs and drain should be located here.

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- Attach 2 hose fittings (1/2" to 10mm) to water & air inputs. Then connect the hoses to the fittings. Use valves for water and air inputs in order to be closed when necessary.

Hose fittings

1/2" to 10mm Air input (Orange) Water input(Blue)

Connect to input hose

from the unit

Screw to the piping valve

- Fit the drain collector into the drain pipe and seal it with silicone paste. Connect the drain hoses to it and secure them with hose clamps.

Drain of water-actuated saliva ejector

Drain of air-actuated saliva ejector

Drain of cuspidor bowl

To the drain pipe

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- Connect the 5 wires form main box to its connector in the power supply box. Short wires are connected to the connector for color identification of the wires.

Connector & Short wires

5 wires from main box

- Connect the 3 wires from the chair to the 220V connector in the power supply box(yellow color= ground). Short wires are connected to the connector for color identification.

220V Connector & short wires 3 wires from chair

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- Screw the bowl in its place. Then attach the washing pipe of the bowl to its connector and tighten it by a wrench. Put the cup filler pipe on its place and push it down, as shown in the picture.

- Attach the X-ray viewer to the tray and tighten its 4 screws. Connect its cable to the connector. (To do this, the upper cover of the tray should be opened. Pull the cover up to open.)

4 screws of the X-ray viewer & 4 holes on the tray

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Male & female

connectors of the

negatoscope

- Connect the power cable to the power switch on the power supply box. The 2 wires from the plug should be connected to side "0" of the switch and the 2 wires from the power PCB should be connected to side "1" of it.

power switch

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- Put the upper cover of the box on it and tighten 2 screws in the sides. Plug on the unit. It is better to be grounded. Turn the power switch on.

Power switch

Adjustments - Open the door of the main box. (Pull the door to unlock the magnetic lock.) Open input valves of water and air. Adjust the water pressure between 2.5 – 3 bars and air pressure approximately 8 bars, using the knobs on the filter-regulators. Water flow rate of the cup filler and the cuspidor bowl can be adjusted using 2 knobs in the box.

Regulator of water

Regulator of air

Knobs to adjust the water flow rate of cuspidor bowl & cup filler

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- Attach your highspeed handpiece to the right attachment and press the relevant foot switch. Air pressure on the gauge should be about 2.2 – 2.5 bar. Otherwise, open the upper ABS cover of the tray and adjust the pressure by turning the screw on the control block (on the right side). The water supply of the highspeed handpiece can be adjusted by a knob on the right side of the tray. Do the same for the lowspeed handpiece. The pressure on the gauge should be about 2.6 to 2.8 bar for the lowspeed handpiece.

highspeed

handpiece control block

lowspeed handpiece

control block

lowspeed handpiece pressure gauge

highspeed attachment

highspeed handpiece pressure

gauge lowspeed

attachment

Lowspeed water knob

Highspeed water knob

Water adjustment

knobs

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Operation Digital control on the cuspidor side:

Digital control on the tray

Operations are the same as previously illustrated control.

Chair up

Chair zero-

position

Back-rest up Chair supine

Negatoscope

Back-rest down

Saliva ejector on/off

Cup filler on/off

Alarm

Power on/offChair down

Light on/off

Rinsing cuspidor

bowl

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Foot control

- Chip-blower system provides blowing air through your highspeed handpiece. This function is applicable with 3-hole handpieces. - To use chair control, the control panel on the cuspidor side should be turned on.

Highspeed handpiece

Scaler button

(optional)

Chair control

Lowspeed handpiece

Chip-blower

Alarm (optional)

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Syringe - The tip can be detached, washed, disinfected or autoclaved. To open the tip, push down the lock/unlock ring and pull out the tip. To relocate the tip, push down the lock/unlock ring and insert the tip into the hole. Then, release the ring. X-ray viewer To turn on the X-ray viewer, use the key on the right side of it.

Lock / unlock

ring

Tip

Air / water buttons

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Head-rest

To adjust the height of the head-rest, pull up or push down the shaft which connects the head-rest to the chair. To adjust the angle of the head-rest, turn the adjusting knob counter clockwise to unlock the head-rest. After making the desired angle, tighten the adjusting knob.

Light

Adjusting knob

Shaft

Glass reflector

Transparent cover

Metal reflector

Handle

Pipe

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To adjust the beam, loosen the adjusting screw on the top of the light and move the tube inside or outside. After achieving appropriate beam (no shades), tighten the focus adjusting screw. Attention: The glass reflector is fixed and the focusing tube moves only.

Focus adjusting

screw

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Saliva ejector

This unit is equipped with 2 saliva ejectors: air-actuated and water-actuated. The water actuated saliva ejector uses the input water to make vacuum. Lifting the relevant saliva ejector (black colored) and hitting the saliva ejector button on the digital control panel, the water-actuated saliva ejector starts. Relocate it into its holder to stop vacuum.

The air-actuated saliva ejector uses the input air of the unit to make vacuum (white colored). To start it, open the relevant valve counterclockwise. Close the valve to stop it.

Water-actuated saliva ejector

Air-actuated saliva ejector

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Tap water Tank water

Tap water Tank water

Water reservoir tank

If there is no input water or you want to use serum or distilled water for handpieces or syringe, you can use water reservoir system. To this end, fill a bottle with standard neck, up to ¾ of its capacity and connect it to the prepared socket. Then turn on the tank switch so that the air comes into the tank and pumps out the liquid stored in the tank to the unit. There is a switch for selection between tap water and tank water. To select the tank water, turn the switch to the tank side.

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Maintenance and service - Notice: At the end of the working day, close the water and air input valves and disconnect the electricity by turning off the power switch on the power box. - To clean the upholstery, use water and soap solution. Avoid using chemicals and disinfectants. - To clean the metal and ABS parts, use cotton and soft car-polisher. - To lubricate motors, joints and springs, use high-temp resistant grease. - If the cuspidor bowl gets dirty, wash it using water, detergent and soft cloth. - Avoid pouring chemical solutions into the bowl to handle any obstruction. If the drain is blocked, move the chair to its supine position. Then, pour a pailful of water into the bowl to remove the obstruction. Or use a spring (after dissembling the bowl) to remove the obstruction in drain hose. - If the air/water filter of the regulator gets dirty, open it (turn and pull down). Then wash it with water. To relocate it, push it up and then turn it so that it locks. (Make sure that the o-ring of the filter is located properly on its top while fitting.)

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- To remove any obstruction from water-actuated saliva ejector, if its vacuum is weak, use the valve with blue handle inside the main box. To this end, start the saliva ejector. Then, hold it in a vessel and turn the handle of the valve 90 degrees to close the valve and to start reverse function (exiting water from the saliva ejector). Open and close the valve several times so that the particles obstructed the line come out from the saliva ejector. Then Open the valve for normal function.

- Avoid cleaning the glass reflector of the light. For cleaning the transparent front cover of the light, use soft cloth soaked in cold water. Or you can dissemble the cover carefully and wash it with water.

Reverse valve

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- Avoid putting films that are soaked in developing and fixing liquids on the surface of negatoscope. First, dry the film and then put it on the surface of negatoscope. - To clean the digital control panels, use cotton and alcohol.

Frequent services - Lubrication of the joints of the unit, every 6 months - Cleaning air/water filter-regulator, every 3 months - Cleaning the upholstery and body of the unit, every 3 months. - Cleaning the cuspidor bowl and the transparent cover of the light, 30 days - Cleaning the saliva ejector and performing reverse function, every day - discharging moisture of the air-compressor, every day (It is recommended that a skilled technician checks up the unit monthly to prevent any probable defect of the unit.)

Checking tips Problem Checking tips Solution

Check the fuse - Replace the fuse if it is defective

Check the lamp - Replace the lamp if it is defective

1- The light does not turn on

Check the cable of the light and its connections

- Replace the cable if it is defective - Reconnect the cable to the terminal if it is loosened

2- Water leaks from the tip of handpiece

Check the pneumatic valve (4 screw at the bottom of the valve should be opened)

- Clean the internal parts - Replace the valve needle inside - Replace the pneumatic valve

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Problem Checking tips Solution 3- The tray arm is loosened

Requires adjustment - From the end of the second arm, tighten the adjusting screw clockwise, using a No.8 hexagonal screw driver

4-The light arm is loosened

Requires adjustment - From the end of the third arm of the light, turn the brazen screw clockwise to tighten it and CCW to loosen

5- leakage from foot control

- Replace the rubber washer inside the brazen cylinder of the foot control. - Replace the o-ring inside the foot control

Check output air of the foot control

- If the air current is blocked, unblock it and remove any obstruction

6- Handpiece does not work

Check the o-rings inside the foot control

- Replace the o-rings if any of them is defective

Check the capacitor - Replace the capacitor if it is defective

Check the motor and its connections

- Replace the motor if it is defective

7- Motor does not work

Check the fuse and electrical parts of the chair

- Replace the fuse if it is defective - Repair or replace the electrical parts if any of them is defective

Check the fuses - Replace the fuses if defective 8- Cup filler/bowl washer/ water actuated saliva ejector does not work

Check the solenoids of the electrical valve

- Replace the solenoids if defective

Check the fuse inside the power box

- Replace the fuse if defective 9- Solenoid valve does not work at all

- Check the output voltages of the transformer

- Replace the transformer if defective

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Problem Checking tips Solution Check the diaphragm inside the solenoid valve (3 screws on the solenoid should be opened)

- Clean the diaphragm - Replace the diaphragm if defective

Check the filter inside the valve

- Clean the filter

Check the spring inside the valve

- Pull the spring a bit if it is concentrated

10- Water leaks from the cup filler or bowl washer

Check the input voltage of the solenoid

- Reconnect the voltage if it is disconnected

Check the fuse on the chair PCB (6A)

- Replace the fuse if defective

Check the PCBs and connections

- Reconnect the connections - Repair or replace the PCBs if any of them is defective - Replace the IC

Check the plug and the switch on the power box

- Reconnect the cables if disconnected - Replace the plug or the switch if defective

11- Electrical and digital parts do not work at all

Check the socket between the transformer of the unit and the chair

- Reconnect the flat cable if disconnected - Replace the cable if defective

Check the 5V input voltage of the panel PCB

- Reconnect the wires if disconnected - Replace the cable if defective

One of the 4 input wires is disconnected

- Reconnect or replace the cable

12- One of the control panels does not work

Check the buttons of the panel

- Replace the panel if defective

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Attention: If any of the fuses on the PCBs is defective, its relevant LED over the fuse turns on if the function is turned on. This feature helps to find the defective fuse which should be replaced.

No Guarantee Is considered for the defects caused by the following conditions: 1) Manipulation of the unit by unauthorized people 2) Any problem caused by transportation with the customer’s responsibility 3) Losing the guarantee card 4) Any problem caused by force-majeure 5) Cracking the glass reflector of the light

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Specifications

Electrical Power supply 220VAC 50Hz Total consumed power 885W Weights Chair 120Kg Unit 65Kg Maximum applicable weight for the chair

200Kg

Light Operating voltage 12VAC Consumed power 55 W Maximum luminance 24000 LUX Temperature color 4200-4500 Kelvin - Due to the standard definitions of Iran, this unit is classified as type II regarding electrical isolation and type B regarding protection against the risk of electrical shocks.

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Appendix Water/Air schematics

lowspeed handpiece water valve

gauge control block syringe

filter-regulator pneumatic valve foot input

air

Saliva control ejector highspeed handpiece pneumatic

valve water valve chip-blower regulator of tank vacuum air-actuated

valve on/off valve

drain

tank

tank water selector

filter-regulator

input water

solenoid Saliva valve Ejector water Air

valve

Water-actuated Water

drain bowl cup

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Wiring and PCBs Fuse PCB (inside the power box)

1) 220V Input (power switch) 2) 220V Chair (3 wires to chair PCB) 3) 220V Transformer 4,5) 220V Optional accessories (scaler, light cure,…) 6) 0V Transformer 7) 12V Transformer 8) 8V Transformer 9) 0V Transformer 10) 12V Transformer 11) 0V Light (5 wires to main PCB) 12) 12V Light (5 wires to main PCB) 13) 8V Light (5 wires to main PCB) 14) 0V Solenoid valve (5 wires to main PCB) 15) 12V Solenoid valve (5 wires to main PCB) 16) Fuse of the transformer (6A) 17,18) Fuse of optional accessories (6A)

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Main PCB (inside main box)

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1) 5V Orange (keyboard PCB) 2) 5V Black (keyboard PCB) 3) Command Yellow (keyboard PCB) 4) Command Green (keyboard PCB) 5) 0V Light 6) 12V Light 7) Saliva ejector (microswitch) 8) Cuspidor bowl (solenoid valve) 9) Cup filler (solenoid valve) 10) Command solenoid valve 11) 0V Light (power box) 12) 12V Light (power box) 13) 8V Light input (power box) 14) 12V Solenoid valve (power box) 15) 0V Solenoid valve (power box) 16) Flat cable (chair PCB) 17) Fuse of Light 6A 18,19) Fuses of negatoscope and alarm 20) Fuse of saliva ejector 1A 21) Fuse of bowl-washer 1A 22) Fuse of cup-filler 1A

Cuspidor

7 Solenoid valve 10 8

Microswitch of saliva ejector

9

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Keyboard PCB (delivery tray and cuspidor)

1)Brown/ 5V(main PCB) 2)Black/ 5V(main PCB) 3)Green/ Command(main PCB) 4)Green/ Command(main PCB) 5)Red/ Lower motor(foot control) 6)Blue/ upper motor(foot control) 7)Purple/ upper motor(foot control) 8)Brown/ Lower motor(foot control) 9)Common foot control 10)Flat cable of panel Foot control

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Chair PCB

1,5) Capacitor (Back-rest motor) 2) CCW (Back-rest motor) 3) Common (Back-rest motor) 4) CW (Back-rest motor) 6,10) Capacitor (Lower motor) 7) CCW (Lower motor) 8) Common (Lower motor) 9) CW (Lower motor) 11,12) 220V Input (Power box) 13) Upper stopper (Lower motor) 14) Common for microswitch (Lower motor) 15) Lower stopper (Lower motor) 16) Upper stopper (Back-rest motor) 17) Common for microswitch (Back-rest motor)

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18) Lower stopper (Back-rest motor) 19) Flat cable (Main PCB) 20 to 23) Fuses for motors 2A 24) Main fuse of the chair 6A Motors

Back-rest

Lower

C=20µF 240V 1000h/CLASSB 3000h/CLASSB M=220V 1.7A 374W 1410RPM 50Hz

Microswitches