Related Manuals for NUVE OT 020
Summary of Contents for NUVE OT 020
- Page 1 NÜVE SANAYİ MALZEMELERİ İMALAT VE TİCARET A.Ş. BENCH TOP STEAM STERILIZERS OT 020 / OT 020V SERVICE MANUAL...
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Page 2: Table Of Contents
4.17. Replacing Locking Switch 4.18. Cleaning the Sterilizator Chamber Filter 4.19. Replacing Pressure Switch SECTION 6 DRAWINGS AND DIAGRAMS 6.1. Electric Circuit Diagram (OT 020) 6.2. Electrical Circuit Diagram (OT 020V) 6.3. Water and Steam Unit Diagrams SECTION 7 SPARE PART LIST... -
Page 3: Section 1 Introduction
This manual includes servicing and maintenance information for OT 020 and OT 020V Bench Top Steam Sterilizers. It is prepared to be used by technicians who were formerly trained by Nuve. This manual informs the technicians about the operating principles, diagnosing and repairing methods and spare part replacing. -
Page 4: General Purpose
During sterilization, the condense solenoid valve keeps the pressure in the chamber constant according to the set temperature. Steam discharge and drying (OT 020): During the steam discharge phase, the steam in the sterilization chamber is discharged and after the pressure has dropped to zero, moisture in the sterilizator chamber is discharged according to driying time set on the OT 020. -
Page 5: Section 2 Operating Principles
SECTION 2 OPERATING PRINCIPLES 2.1. GENERAL OVERVIEW The OT 020 and OT 020V can be split into 4 main groups, Power supply values • Control unit • Heating unit • Water and steam unit • 2.2. EXPLANATIONS FOR THE FUNCTIONS 2.2.1. -
Page 6: Clontrol Panel
2.2.3. Control Panel The illustration below shows the functions of the display board. For more information, please see the OT 020 or OT 020V user’s manual. Figure 1- OT 020 Temperature display 11. Preperation led Time display 12. Sterilization led Temperature setting key 13. - Page 7 Figure 2- OT 020V Temperature display 11. Preperation led Time display 12. Sterilization led Temperature setting key 13. Steam discharge led Time setting key 14. Drying led Drying time Cycle completed led Start/Stop key Lid open led Value decrease key 17.
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Page 8: Water And Steam Unit
2.2.4. Water and Steam Unit The steam needed for the sterilization is generated by boiling the distilled water which is taken from the water tank to the sterilization chamber. The pressure in the sterilization chamber is followed on the manometer. ♣... -
Page 9: Section 3 Servicing
SECTION 3 SERVICING Caution: Before servicing the instrument, please take the necessary precautions for your health. Please respect to the warnings on the unit!! Please make sure that you have disconnected the unit before you service it. 3.1. GENERAL OVERVIEW The failures can be diagnosed according to the following tables. -
Page 10: General Failure
3.2. GENERAL FAILURES FAILURE PROBABLE CAUSES SOLUTION 1 The on / off switch is ON Power supply inlet failure Check that mains voltage is supplied to the unit. but it does not lighten, the display is blank. Check that the terminal connections and power supply socket connections are well connected. - Page 11 FAILURE PROBABLE CAUSES SOLUTION The main PCB SSR relay does Check the outlet with a multimeter. If there is no not outlet. (12 VCD) outlet, replace the main PCB. The SSR is defective. Replace the SSR. 6 The lid leaks steam. The lid gasket does not fit well Adjust the gasket length to make it fit properly.
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Page 12: Temperature Control Failure
3.3. TEMPERATURE CONTROL FAILURES FAILURE PROBABLE CAUSES SOLUTION The temperature does The main PCB SSR terminal Check the SSR terminal outlet with a not reach the set does not outlet. multimeter. If there is no outlet (12 VCD), temperature replace the main PCB. The heater is defective. - Page 13 FAILURE PROBABLE CAUSES SOLUTION The error message "H04” The endings of the temperature Connect the endings to the main PCB appears on the display. sensor are connected in reverse. correctly. The error message "H06” Water cannot be filled into the Check the water pump, water charge solenoid appears on the display.
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Page 14: Section 4 Calibration Procedure
“value increase or decrease keys” (7 &8). Press “stop” to return to stand-by mode. • 4.2.2 OT 020 V (Figure 2) Press “value increase and decrease keys” (7 &8) together continuously until you see “0” on the • temperature display and any value on the time display. -
Page 15: Section 5 Spare Part Replacing
SECTION 5 SPARE PART REPLACING Cautions : Disconnect the steam sterilizer before replacing any component ! 5.1. Access to the Command and Control Unit (See Figure-7) Remove the water filling line record (1) on the top of the steam sterilizer. •... -
Page 16: Replacing Water Filling Solenoid Valve
5.6. Replacing Water Filling Solenoid Valve (see Figure 9) Remove the solenoid valve (17) bobbin socket after removing its screw. • Remove the solenoid valve mounting screw from the bottom of the steam sterilizer. • Remove the solenoid valve (17) without moving the check valve and remove the connection •... -
Page 17: Replacing Water Pump
Remove the water pump(21) electrical connection from the water filling solenoid valve (17) bobbin • socket. Remove the water pump inlet and outlet hoses. • Remove the water pump mounting screws. • Mount the new water pump and make the hose and electrical connections carefully. •... -
Page 18: Replacing Locking Bobbin
5.16. Replacing Locking Bobbin ( see Figure 7 & Figure 9) Remove the flywheel handles (4). • Remove the lid protection cover (3) by removing its 4 screws. • Take the locking bobbin out by removing the bobbin (14) connection screws. •... - Page 19 SECTION 6 DIAGRAMS AND DRAWINGS...
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Page 20: Electric Circuit Diagram (Ot 020)
6.1. ELECTRICAL CIRCUIT DIAGRAM (OT 020) Figure 3... -
Page 21: Electrical Circuit Diagram (Ot 020V)
6.2. ELECTRICAL CIRCUIT DIAGRAM (OT 020V) Figure 4... -
Page 22: Water And Steam Unit Diagrams
6.3. WATER AND STEAM UNIT DIAGRAMS Figure 5- OT 020 flow diagram... - Page 23 Figure 6- OT 020V flow diagram...
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Page 24: Section 7 Spare Part List
SECTION 7 SPARE PART LIST... - Page 25 Figure 7...
- Page 26 Figure 8...
- Page 27 Figure 9...
- Page 28 Figure 10...
- Page 29 Figure 11...
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Page 30: Spare Parts List
Power inlet socket Z12.S 13 010 Locking switch Z12.A 03 025 Display PCB Z15.G 05 018 Maximum pressure switch Z12.P11 009 ♦ Minimum pressure switch Z12.P11 006 ♣ This feature is valid only for OT 020V ♦ 1 piece for OT 020... - Page 31 Shelf carrier mounting screw Z11.R 02 237 Water inlet record Z16.R 02 236 Filter Z15.F 06 033 Temperature sensor ( sterilization chamber) Z19.I 01 036 Heater Z15.I 02 111 Connector fitting Z12.F 07 019...