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Instructions for the CPA-2 and CPP-2 Processors
14. Fuse Replacement
[CPP-2]
If the processor does not function, or some of the systems do not operate, a fuse may be blown. If nothing at all works on the processor, first check that the power cord is plugged in, and the outlet it is plugged into is 'live.' If the only thing that does not work is the heating of the water bath, reset the thermal overload button. To check and replace fuses, use the procedure listed below.
Turn off the processor and unplug the power cord. Remove the JOBO Lift (if attached). Remove the two large slot-headed screws in the upper motor housing (already removed if the lift has been removed). Do not remove the third (lowest, below motor shaft) large slot headed screw. Carefully remove all knobs (4 on CPA-2 and 6 on CPP-2). Remove the four motor head thumbnuts located on the bottom corners of the motor head. Lift the motor head straight up from the trough. Let all the water drain from the pump housing into the trough.
Place the motor head upside-down on a firm surface. Remove the magnet or cog from the motor shaft. Carefully remove the sealing tape (#70232) from around the motor shaft opening area. (You may need to slit the tape to clear the three finger reversal mechanism. If this is done carefully, it should be possible to reuse the tape seal.) Remove the six small slot-headed screws located on the four corners and middle of the long sides of the motor housing. Turn the motor housing on its left side (side opposite the motor shaft). Gently remove the top cover of the motor head, being careful to not stress the switch shafts. Set the top cover aside. (The CPA-2 heat indicator light is attached to the top cover and will limit how far the lid may be placed from the bottom section.)
Locate the fuse. (See below for location, function and specifications of the fuses.) Verify that the power cord is unplugged. Carefully remove the fuse from its holder. (You may use a small screw driver or needle-nose pliers.) Replace the fuse with the designated replacement. Do not substitute a differently rated fuse! Verify complete seating of the new fuse. Reverse the disassembly procedure listed above to reassemble motor head. Test the function of the reassembled motor head. If your processor blows another fuse, contact JOBO for repair assistance.
WARNING: Always unplug the power cord before opening the motor head. Make sure that water does not get into the motor head. If there is any water (or chemicals) inside the motor head, do not plug in power cord, contact JOBO for repair assistance. Never replace a fuse with a different rating. If the processor continues to blow fuses, or there is any function not working correctly, contact JOBO for repair assistance. Do not use the processor if it is not functioning properly.
WARNING: Both CPA-2 and CPP-2 processors made since mid 1995 have different rotation motors and circuit boards. To identify which board, and the appropriate fuse for the board you have.
WARNING: If there is a label beside the fuse indicating a different value (other than what is listed below) for the fuse, contact JOBO for assistance.
Note:
Do not attempt to open the top cover by removing the face plate under the knobs. This access is sealed to prevent moisture from getting into the motor head.
The screws holding the upper circuit board(s) to the bottom of the motor head are not turned down all the way. They are left loose (the circuit board can move) to prevent the switches from being damaged when the cover is installed or removed. Do not over-tighten these screws.
Visual inspection of a fuse is not a reliable method for determining if the fuse is good. Use a 'continuity checker', or 'Ohm meter' to verify fuse condition. If you do not have access to a checker or meter, replace the suspect fuse with a new, same rated fuse.
All the fuses for the CPA-2 and CPP-2 are rated at 250 Volts. 250 Volt fuses work with any voltage less than or equal to 250 Volts. You do not need '110 Volt fuses' for processors using 110 Volt power sources.
Main Circuit Fuse
- Type: 6.3 Amp 250 Volt (rated) Type F (fast blow), JOBO part #27005
- Processor: CPA-2 and CPP-2
- Protection: All electrical circuits
- Failure Symptoms: Nothing works
- Location: Top circuit board, near the On/Off switch
Rotation Motor Circuit Fuse
- Type: 1.25 Amp 250 Volt (rated) Type T (slow blow), JOBO part #27017 (older models only)
- 1.6 Amp, 250 Volt (rated), Type T (slow blow) JOBO part #27009 (newer models only)
- Processor: CPA-2 and CPP-2
- Protection: The rotation motor circuit
- Failure Symptoms: Rotation motor will not turn
- Location, CPA-2: Bottom circuit board, rear, near the rotation motor
- Location, CPP-2: Bottom circuit board, rear, near the rotation motor, closer to front of two fuses
Temperature Circuit Fuse
- Type: 800 Milli-amp 250 Volt (rated) Type T (slow blow), JOBO part #27008
- Processor: CPP-2 only
- Protection: The temperature control circuit
- Failure Symptoms: Display LED's will not light (rotation motor turns)
- Location: Bottom circuit board, rear, near the rotation motor, closer to back of two fuses
Go To:
1. Processor Specifications; CPA-2 and CPP-2
2. Safety First
3. Differences Between the CPA-2 and the CPP-2 Processors
6. Processor Maintenance and Tips
7. Processing Instructions for Film Using Magnet Drive
8. Processing Instructions for Prints Using Magnet Drive
9. Processing Using the JOBO Lift Accessory
10. Processing Instructions With the JOBO Lift Accessory
11. Precautions for Film and Paper Processing
12. Additional Processing Information
13. Spare Parts
14. Fuse Replacement
If you have any questions, contact us utilizing one of the following methods:
Equipment or Processing Questions:
- Phone: Customer Service Department (734) 205-9421
e-mail: tech@jobo-usa.comRepair Questions:
- Phone: Repair Department (734) 205-9420
- e-mail: repair@jobo-usa.com
JOBO Contacts
- Telephone (734) 677-6989
- Fax: (734) 677-6963
- Postal address
- P.O. Box 3721, Ann Arbor, MI 48106
- Shipping Address
- 4401 Varsity Drive, Suite D, Ann Arbor, MI 48108
- Electronic mail
- Sales: sales@jobo-usa.com
- Equipment & Processing Questions: tech@jobo-usa.com
Repair Information: repair@jobo-usa.com- Shipping or Billing Questions: help@jobo-usa.com
Webmaster: webmaster@jobo-usa.com
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This page last updated on 03/20/02