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Instructions for the CPA-2 and CPP-2 Processors
6. Processor Maintenance and Tips
[CPP-2]
Your CPA-2 or CPP-2 processor is nearly maintenance-free under normal operation. However, with heavy, long-term usage, a periodic check of the items below will ensure maximum performance and reliability from your processor. Also included are usage tips and cleaning recommendations.
1 Wipe up all chemical spills when they happen. Most chemicals will not stain the processor unless they have had time to set in. A damp sponge or towel will remove still wet chemicals. Do not use any abrasive cleaning materials as they may scratch the surface of the processor. If necessary, use a damp sponge with a mild soap. Follow with a water rinse using a clean damp sponge. This procedure will usually remove dried chemical deposits. Processor Clean II may be used to remove more stubborn chemical deposits. Follow instructions provided with the cleaner. Whenever cleaning the motor head (electrical equipment), unplug the processor and be sure to avoid getting moisture inside the unit.
2 The drive cogs on earlier versions of the processors were white. The current version drive cogs are black. The newer black drive cogs are used with all versions of the processors. Use part number #95523, a black drive cog, for the straight rotation motor shaft. Tapered shaft rotation motors require a black drive cog, part number #95555.
3 Make sure the three-finger reversal mechanism (it looks like a 2" white 'chicken foot'), located next to the rotation motor shaft, is pointed towards the motor shaft. This position allows the reversal switch to function. Turning the mechanism to face away from the motor shaft will cause the motor to rotate in one direction only. If the three-finger device is constantly 'kicked' away from the drive cog (and does not reengage), tighten the small Phillips head screw, located in the center of the three finger device, clockwise very slightly. If this screw is overtightened, the motor will reverse rapidly, without making a complete revolution.
4 Be sure to fill the tempering bath with water whenever you are using the processor, to prevent overheating and tripping of the thermal overload mechanism. Running the processor without water but with a tank or drum will also cause excessive wear on the roller block assembly.
5 Do not exceed the maximum quantity (1000 ml) of chemicals or water (in a tank or drum), for any process. If you use an Expert drum, be especially careful to not set the water level too high (more than 1/4" or 6 mm above the bottom lip of the drum) in the upper trough. If the level is too high, the Expert drum will be rotating a very large quantity of tempering water in addition to the chemicals in the drum which can wear out the rotation motor prematurely.
6 When using the stainless steel reel system, be sure to keep the plug in the funnel fully inserted.
7 Periodically examine the upper and lower trough for buildup of foreign deposits. Hard water often leaves deposits of rust and calcium. A warm bath of water is likely to accumulate an algae-like growth. If any of these deposits are noticed, use Processor Clean II (follow the instructions that come with the product). Microorganism growth can be minimized by draining and rinsing the processor troughs between uses.
WARNING: Do not use chlorine bleach (Clorox) or other products that contain chlorine to clean or maintain the water bath. Chlorine will corrode the heating element, possibly causing an electrical short circuit. The amount of chlorine, in 'chlorinated' drinking water, is not enough to damage the heating element.
8 If the pump performs sluggishly, or the flow of water in the upper trough is minimal, check the Pump Motor Housing (see illustration below) for foreign material as follows: Unplug the processor. Remove the four large thumbnuts on the lower corners of the motor head that hold it to the lower trough. Remove the motor head from the lower trough. Gently rock the pump motor housing to remove it. Carefully remove any material accumulated inside the housing or on the pump shaft. The CPP-2 has a temperature-sensing probe (small black rod) mounted parallel to the pump shaft, so be very gentle if you must clean the probe, as it is easily damaged or dislocated. To reassemble, reverse the procedure. Be certain to place the end of the pump shaft into the center ring on the bottom of the pump housing. The bottom of the pump housing will look as though three of the four cross bracing supports to the center ring are broken or missing. It is not a defect or damage.
Note:
The modification to the pump housing mentioned above was made by JOBO to minimize noise, vibration, and wear.
9 If you wish to cool a CPA-2 processor below room temperature, or cool a CPP-2 processor below room temperature (without using the cold water Solenoid), use the following procedure: Fill unused or extra 1000 ml bottles with water, and cap loosely. Do not put more than 1000 ml in each bottle. Place the bottles in a freezer or refrigerator until frozen or cool. Put these bottles into unused bottle slots. Set the temperature on the processor to the desired process temperature. Let the processor run until the correct temperature is obtained. Be sure to check the temperature of the chemicals and rinse water. Run the process when all temperatures have stabilized at the desired point. You may need to exchange chilled bottles periodically in long processes (extra bottles already cooling in the refrigerator would be useful). The chilled bottles constantly cool the water bath, and the heating element of the processor heats as necessary to bring the temperature up to the process temperature. Alternatively, re-freezable 'ice packs' (Blue Ice) may be carefully placed in the trough. Be sure the pack does not interfere with the moving parts of the processor.
WARNING: Do not put loose ice in the processor trough! The ice could be sucked up into the pump motor system and cause severe damage.
This procedure will also work with a CPP-2 when the temperature of the cold water line is above the desired process temperature. Do not use the cold water solenoid if the cold water line is warmer than the selected process temperature. The solenoid does not cool the water going into the processor.
10 If you have obtained this instruction manual as a replacement to earlier editions, use the process recommendations in this book (where they are different), not the recommendations in the earlier manual(s). These instructions reflect the changes that have been made in film, paper, and chemicals since the original book was written. (If you already have processing procedures that completely satisfy you, don't change them just to match the directions in this book.)
11 Don't worry. The CPA-2 and the CPP-2 Processors are excellent machines. They will produce quality processing simply and consistently with only a little care and understanding of these instructions.
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