Dishmachine Component

Maintenance Instructions

Parker-Style

Solenoid Valve

Repair Kits

07610-003-05-39 A

April 15, 2005

www.jacksonmsc.com

Many Jackson dishmachines are equipped with electrical solenoid valves to allow for automatic fill and rinse. These valves are designed to specific tolerances and design aspects that must be met in order to function properly.

Jackson offers repair kits for replacing some of the wear items associated with solenoid valves which will allow you to save money in that replacement of these parts can take place without removing the solenoid valve from the plumbing assembly.

The instructions provided here are for maintenance personnel only. Unauthorized persons should not attempt any of the steps contained in these instructions.

STEPS

1. Remove the top screw with the 5/16” nutdriver. Remove the screw and the data plate and set to the side.

Warning: many of the instructions and steps within this document require the use of tools. Only authorized personnel should ever perform any maintenance procedure on the dishmachine!

PREPARATION

1. Power must be secured to the unit at the service breaker. Tag or lock out the service breaker to prevent accidental or unauthorized energizing of the machine.

2. Ensure that incoming water to the machine is secured either by use of a shut-off valve or disconnecting the incoming water line.

TOOLS REQUIRED

The following tools will be needed to perform this maintenance evolution:

1. Small flathead screwdriver

2. Medium flathead screwdriver

2. Needle nose pliers

3. 5/16” nutdriver

4. Channel locks

5. 12” pipe wrench

Removing the top screw

2. With the top screw and data plate removed, grasp the solenoid coil and gently pull up. The coil should slide up, allowing you to remove it from the valve bonnet. If you are wanting to replace the coil, continue on with Step 3. If you are wanting to replace some of the internal components of the valve, proceed to step 12.

TIME REQUIRED

It is estimated that it will take (1) person twenty minutes to perform this task, not including all of the items indicated in the section entitled “PREPARATION”.

IMPORTANT NOTES

Removing the coil

1. Read these instructions thoroughly before attempting this maintenance evolution. Become familiar with the parts and what actions need to be taken. This will save time in the long run!

2. The procedures demonstrated in this manual are shown being performed on an AJ-44 rack conveyor dishmachine.

The actual maintenance steps, however, apply to any Parker style solenoid valve found on a Jackson dishmachine.

3. NOTE: Replacing the solenoid coil requires working with the wiring of your machine. It is important that all wiring maintenance be performed by qualified personnel. Always verify the wiring steps presented in this instruction with the schematic that shipped with the unit. A current schematic can also be found in the unit’s installation manual. Before beginning any step that involves working with wiring, ensure that the steps located in the section entitled

“Preparation” have been performed. Power must be secured to the machine at the service breaker. Failure to do so could result in severe injury to maintenance personnel.

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Parker Style Solenoid Valve Repair Kit Instructions

Revision A (04/15/2005)

www.jacksonmsc.com

Prying open the coil wire cover

Loosening the conduit nut

4. When replacing the coil, ensure that when removing the coil wire cover that care is taken not to damage the wires inside. Using the medium flathead screwdriver, gently use it to open the cover enough to where it could be pulled off.

7. Using a pair of channel locks, gently loosen the conduit retaining ring for the conduit nut. Once it is loosened, use your fingers to unscrew and remove it.

8. Pull the conduit away and discard the bad coil. Take the new coil and attach the conduit, reinstall & tighten the conduit nut, and pullg the wires through so that you will be able to wire the valve back up.

9. Reconnect the wires from the conduit to the wires from the solenoid as they had been connected previously. Ensure that the wire nuts are on tight.

10. Slide the coil wire cover back on, taking care not to damage the wires.

11. If you are done performing maintenance on the valve, continue on to step 23. Otherwise, please go on to step 12.

Straightening the wires

5. Once the coil wire cover has been removed and set to the side, take the internal wires and pull them out straight.

Removing the wire nuts

6. Remove the wire nuts from the wires and separate them.

Parker Style Solenoid Valve Repair Kit Instructions

Revision A (04/15/2005)

Loosening the valve bonnet

12. To remove the valve bonnet, grasp it with the jaws of the pipe wrench and turn to the left. Note: on some models you may have

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to remove the valve in order to perform this and any further steps.

Be careful not to damage the plumbing assembly. Only use the pipe wrench enough to where you can spin the valve bonnet off with your hand.

Removing the diaphragm

Removing the valve bonnet

13. Slowly remove the valve bonnet. Note: The spring for the plunger is located directly under the bonnet and may come free if you are not careful. Remove the plunger, spring and valve bonnet and place to the side.

17. Remove the diaphragm retainer and then the diaphragm itself.

Many problems associated with a solenoid valve can be traced to a clogged pilot port in the diaphragm.

Pointing out the extension hole

Removing the O-ring

14. Remove the O-ring and inspect it. If it has any tears or cuts or excessive flat spaces, it should be replaced.

18. As indicated in the photo above, the extension hole can become clogged. If it is difficult to clean out, you can use a heated straight pin to push through the hole. The center hole, the pilot port, must also be clear. If the diaphragm is torn or bent in any way, it must be replaced.

15. Examine the threads for the valve bonnet. Check them for scoring or signs of damage. Take a cloth and clean them out to remove any foreign particles that might get lodged in the threads and cause a leak. Severely damage threads should not be repaired; instead it is recommended that the entire valve should be replaced. These instructions do not provide information on replacing the solenoid valve.

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16. Note: Even though an O-ring may not appear damaged, it is a good idea to go ahead and replace it if you have a new one. This will help ensure that your valve remains leak-free in the future!

Diaphragm showing (1) pilot port and (2) extension hole

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Parker Style Solenoid Valve Repair Kit Instructions

Revision A (04/15/2005)

www.jacksonmsc.com

22. With the mesh screen removed, look down into the valve and verify it is not clogged. Remove any foreign objects from the valve body that would obstruct flow.

23. Reassemble the valve, reversing the steps needed to take it apart. Replace defective replacement parts with new parts from ordered kits. Ensure that components are sufficiently tightened to prevent leakage.

AFTER MAINTENANCE ACTIONS

Reconnect the incoming water (if disconnected) and turn on. Then restore power to the unit. Run the unit for at least 10 minutes to ensure there are no leaks. If any problems arise you can contact Jackson Technical Service.

Removing the screen retainer

SPECIAL NOTES

20. Using the small flathead screwdriver, lift out the screen retainer. Verify that the holes in it are free of clogs and debris.

Work performed on Jackson dishmachines by unauthorized or unqualified personnel may void the warranty. Before beginning this or any other maintenance evolution on a unit under warranty, you should contact a certified Jackson technician or Jackson

Technical Service. You can find a list of qualified service agencies in the back of you unit’s installation manual.

SPECIAL PARTS

Removing the mesh strainer screen

21. Again using the small flathead screwdriver, carfully remove the mesh screen from inside the valve body. The screen should be taken and rinsed out to remove any debris fouling it.

Solenoid Valve Plunger Kit

Includes plunger and spring

Part number 04810-200-09-18

Solenoid Valve Diaphragm Kit

Includes diaphragm and o-ring

Part number 04810-200-03-18 (1/2” NPT)

Part number 04810-100-10-18 (3/4” NPT)

Solenoid Valve 110 Volt Coil and Housing

Part number 04810-200-01-18

Solenoid Valve 230 Volt Coil and Housing

Part number 04810-200-02-18

Complete Solenoid Valve

Part number 04810-100-12-18 (1/2”, 110 Volt)

Part number 04810-100-09-18 (1/2”, 230 Volt)

Part number 04810-100-53-00 (3/4”, 110 Volt)

Part number 04810-100-03-18 (3/4”, 230 Volt)

CONTACT INFORMATION

Jackson MSC Inc. provides technical support for all of the dishmachines detailed in this manual. We strongly recommend that you refer to this manual before making a call to our technical support staff. Please have this manual with you when you call so that our staff can refer you, if necessary, to the proper page. Technical support is available from 8:00 a.m. to 5:00 p.m. (EST), Monday through Friday. Technical support is not available on holidays.

Contact technical support toll free at 1-888-800-5672. Please remember that technical support is available for service personnel only.

View inside the solenoid valve body

Parker Style Solenoid Valve Repair Kit Instructions

Revision A (04/15/2005)

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