Jackson jp-24b Replacing The Pump Motor/Replacing The Heater, Replacing The Booster Tank Heater

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REPLACING THE PUMP MOTOR/REPLACING THE HEATER
Hex Nuts & Washers
Replacing the Heater

SECTION 5: SERVICE PROCEDURES

REPLACING THE PUMP MOTOR/REPLACING THE HEATER

REPLACING THE PUMP MOTOR

The following list of tools will be needed to complete this procedure. 5/6” nutdriver, phillips screwdriver, 7/16” socket and ratchet, and 7/16” wrench.

1.Disconnect the electrical power to the dishwasher at the main circuit breaker box when servicing. Place a tag on the cir- cuit box indicating the circuit is being repaired.

2.Disconnect power and conduit from dishmachine terminal block.

3.Turn off the water supply and disconnect the water supply line.

4.Disconnect the dishmachine drain hose from the kitchen’s

drain. Drain the machine of any water at this time.

 

5. Move the machine out and lay machine onto its back.

 

6. Use a 5/16” nutdriver to loosen the hose clamp and remove

 

the pump hose to the drain valve.

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7. Use a 5/16” nutdriver to loosen the hose clamp and remove

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the pump hose from the suction casting.

 

8. Use a 5/16” nutdriver to loosen the hose clamp and remove

 

the pump hose from the discharge hub casting.

 

9. Use a 7/16” socket and ratchet, and a 7/16” wrench to

 

remove the drain valve mounting bracket from the motor brack-

 

et.

 

10. Use a 7/16” socket and ratchet to remove the pump motor

 

assembly by loosening the (4) locknuts securing the motor

 

mounting bracket. NOTE: The motor mounting bracket is slot-

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ted to allow for easy removal and installation. Remove (2) of the

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locknuts on one side and slide the assembly toward that side

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and remove. Once the assembly is removed, disconnect the

 

wire leads from the motor wiring box.

 

11. Install replacement motor in reverse order of above.

 

 

Replacing the Pump Motor

REPLACING THE BOOSTER TANK HEATER

The following list of tools will be needed to complete this procedure: phillips screwdriver and 1/2” socket and ratchet.

1.Disconnect the electrical power to the dishwasher at the main circuit breaker box when servicing. Place a tag on the cir- cuit box indicating the circuit is being repaired.

2.Use the phillips screwdriver to remove the two screws from the bottom of the kick panel.

3.Disconnect power and conduit from dishmachine terminal block.

4.Turn off the water supply to the dishmachine.

5.VERY IMPORTANT: Disconnect wire lead (orange/white) from heater contactor coil. Note: Wire is tagged in electrical

panel.

 

6.

Drain water from booster tank.

 

7.

Remove the wires from the heater.

Heater Gasket

8.

Use a 1/2” socket and ratchet to remove the (4) 5/16-18 hex

nuts and lock washers. Remove the heater and heater gasket

 

from booster tank.

Heater

8.

Install the replacement heater and gasket, the tighten firmly.

 

9.

Connect wire leads to heater and tighten firmly.

 

10. Turn on water supply and power to dishmachine.

 

11.Place cycle switch in AUTO position and depress power switch to ON/FILL position.

12. VERY IMPORTANT: Run the dishmachine through several complete cycles and check water level in wash sump. If there is water in the wash sump, reconnect the wire lead (orange/white) previously removed from the heater contactor coil.

13. Run the dishwasher through several cycles and check to see that rinse and wash temperatures are correct.

JP-24 Technical Manual 7610-002-49-79 Rev. D

Issued: 03-06-2006 Revised: N/A

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Contents TECHNICAL MANUAL FOR JACKSON MODELS JP-24 JP-24F JP-24B JP-24BFHOT WATER SANITIZING UNDERCOUNTER DISHMACHINES March 6 P/N 7610-002-49-79 Revision DPage REVISION MADEAPPLICABLE DETAILSNOMENCLATURE FOR THE MODELS COVERED IN THIS MANUAL Model Serial No Installation Date Service Rep. Name Phone NoJP-24B TABLE OF CONTENTS I. SPECIFICATION INFORMATIONII. INSTALLATION/OPERATION INSTRUCTIONS PREVENTATIVE MAINTENANCESECTION SPECIFICATION INFORMATION SECTION 1 SPECIFICATION INFORMATION SPECIFICATIONS of the JP-24/JP-24F5 MINUTE TIMER OPERATING CYCLE SECONDS PERFORMANCE/CAPABILITIES OPERATING CAPACITY RACKS/HOURSPECIFICATIONS of the JP-24B/JP-24BF 5 MINUTE TIMER OPERATING CYCLE SECONDS WASH TIMEJP-24 DIMENSIONS DIMENSIONS30.5 cm 22 5/8”SECTION INSTALLATION/OPERATION INSTRUCTIONS SECTION 2 INSTALLATION/OPERATION INSTRUCTIONS INSTALLATION INSTRUCTIONSELECTRICAL INSTALLATION INSTRUCTIONS OPERATION INSTRUCTIONS DETERGENT CONTROL CYCLE COUNTER RETROFIT KIT INSTRUCTIONS SECTION PREVENTATIVE MAINTENANCE SECTION 3 PREVENTATIVE MAINTENANCE SECTION TROUBLESHOOTING SECTION 4 TROUBLESHOOTING SECTION COMMON PROBLEMSProblem Water overflow from bottom of door Problem Wash motor doesn’t operate on manual washProblem No indication of pressure Problem Machine doesn’t drain when “OFF/DRAIN” switch is pressedProblem Rinse water not at required temperature range SECTION SERVICE PROCEDURES SECTION 5 SERVICE PROCEDURES RINSE SOLENOID VALVE REPAIR PARTS KITPREPARATION TOOLS REQUIREDRINSE SOLENOID VALVE REPAIR PARTS KIT CONTINUED 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 SPECIAL PARTS AFTER MAINTENANCE ACTIONSSolenoid Valve Plunger Kit Includes plunger and spring Part number VACUUM BREAKER REPAIR PARTS KIT VACUUM BREAKER REPAIR PARTS KIT CONTINUED REPLACING THE PUMP MOTOR/REPLACING THE HEATER REPLACING THE PUMP MOTORREPLACING THE BOOSTER TANK HEATER HeaterMINAL ON THE MOTOR REPLACING THE DRAIN VALVE REPLACING THE DRAIN VALVEReplacing the Drain Valve RINSE REGULATING THERMOSTAT REPLACEMENT Remove the thermostat bracket mounting nuts with the 3/8” nutdriver 9. Note regardless of the unit this is being done to, the con- cept is to ensure that the thermostat cannot come into contact with the heater leads or interfere with the placement of any covers SPECIAL NOTES SECTION PARTS SECTION GAUGE PANEL ASSEMBLY SECTION 6 PARTS SECTIONITEM QTY DESCRIPTION Mfg. NoELECTRICAL PANEL ASSEMBLY JP-24/F 208-240 VOLT DESCRIPTIONELECTRICAL PANEL ASSEMBLY JP-24B/BF 208-240 VOLT ELECTRICAL PANEL ASSEMBLY JP-24B/BF 460 VOLT AMTRAK External Control Box Option This panel is used with the following External Control Box OptionMfg. No ELECTRICAL PANEL ASSEMBLY EXTERNAL OPTION & AMTRAK OPTION FRONT VIEW EXTERNAL OPTIONINSIDE VIEW of AMTRAK & EXTERNAL OPTIONS RIGHT SIDE VIEW AMTRAK OPTIONELECTRICAL PANEL ASSEMBLY EXTERNAL OPTION & AMTRAK OPTION CONTINUED KICK PLATE ASSEMBLY Decal, Power Disconnect Warning 09905-021-47-07Nut, Nylon Wing, 1/4”-20 Control Panel Assembly 05700-011-40-93 Control Panel Only 460 Control Panel Assembly 05700-002-18-38Vacuum Breaker Assembly INCOMING PLUMBING ASSEMBLY JP-24/JP-24FINCOMING PLUMBING ASSEMBLIES JP-24B/JP-24BF RINSE STIFFENER/RINSE HUB WELDMENT Connects to Rinse Injector Connects to Rinse StiffenerComplete 110 Volt Solenoid Valve Assembly, 1/2” Coil & Housing only, 1/2”Complete 220 Volt Solenoid Valve Assembly, 1/2” Complete Vacuum Breaker Assembly, 1/2” NPTDRAIN VALVE ASSEMBLY SECTION 6 PARTS SECTIONDRAIN PLUMBING ASSEMBLY WASH MOTOR TO WASH TUB ASSEMBLY Phase RINSE TANK & COMPONENTS/STRIP HEATER KITJP-24B/BFRINSE TANK 40F RiseDOOR ASSEMBLY Order this entire assembly usingDoor Latch Assembly MISCELLANEOUS DOOR SUB-ASSEMBLIESRinse Arm Assembly Wash Arm AssemblyRINSE ARM & WASH ARM ASSEMBLIES FRAME & PANEL COMPONENTS/MISCELLANEOUS PARTS CYCLE COUNTER RETROFIT KIT SECTION ELECTRICAL SCHEMATICS SECTION 7 ELECTRICAL SCHEMATICS JP-24/JP-24F 208-230 VOLT - 50/60 HERTZ - SINGLE PHASEJP-24B/JP-24BF 208-230 VOLT - 50/60 HERTZ - SINGLE PHASE JP-24B/JP-24BF 460 VOLT - 60 HERTZ - THREE PHASE