Jackson JP-24BF Rinse Regulating Thermostat Replacement, Service Procedures, Preparation, Steps

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RINSE REGULATING THERMOSTAT REPLACEMENT

SECTION 5: SERVICE PROCEDURES

RINSE REGULATING THERMOSTAT REPLACEMENT

Many dishmachines comes with integral booster tanks to ensure proper temperature of the final rinse. Jackson has predominantly used two manufacturers of thermostats, EGO and Stemco. These instructions are for use with kit 06401-003-13-94, which is to replace an EGO rinse regulating thermostat with a Stemco brand.

Jackson offers all of the repair parts necessary for performing this task.

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

Warning: many of the instructions and steps within this document require the use of tools. Only autho- rized 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 acci- dental 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.

3.The unit must be drained completely with the drain stopper removed (if applicable).

4.Remove any and all access covers.

TOOLS REQUIRED

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

1.3/8” Nutdriver

2.7/16” Combination Wrench

3.Needlenose Pliers

4.Phillipshead Screwdriver

5.Flathead Screwdriver

6.Ratchet with 1/2” Socket

TIME REQUIRED

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

IMPORTANT NOTES

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

2.These instructions are shown using a Tempstar model dishmachine. However the steps provided should work for models such as the JP-24 as well.

STEPS

1.Some models, such as the Tempstar pictured below, will require that the thermostat bracket removed from the heater. Using a ratchet, extension and 1/2” socket, remove the nuts and lock washer holding the bracket on.

Removing the thermostat bracket/heater nuts.

Removing the thermostat bracket.

2.With the thermostat and thermostat bracket safely out of the way, use a 7/16” combination wrench to loosen and then remove the imperial brass fitting holding the probe in.

3.Remove the wires from the old thermostat. It may be nec- essary to use the needlenose pliers to accomplish this.

4.Remove the thermostat bracket mounting nuts with the 7/16” nutdriver.

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

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

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Contents HOT WATER SANITIZING UNDERCOUNTER DISHMACHINES TECHNICAL MANUALFOR JACKSON MODELS JP-24 JP-24F JP-24B JP-24BF March 6 P/N 7610-002-49-79 Revision DPage APPLICABLE REVISIONMADE DETAILSModel Serial No Installation Date Service Rep. Name Phone No NOMENCLATURE FOR THE MODELS COVERED IN THIS MANUALJP-24B II. INSTALLATION/OPERATION INSTRUCTIONS TABLE OF CONTENTSI. SPECIFICATION INFORMATION PREVENTATIVE MAINTENANCESECTION SPECIFICATION INFORMATION 5 MINUTE TIMER OPERATING CYCLE SECONDS SECTION 1 SPECIFICATION INFORMATIONSPECIFICATIONS of the JP-24/JP-24F PERFORMANCE/CAPABILITIES OPERATING CAPACITY RACKS/HOURSPECIFICATIONS of the JP-24B/JP-24BF 5 MINUTE TIMER OPERATING CYCLE SECONDS WASH TIME30.5 cm JP-24 DIMENSIONSDIMENSIONS 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 Problem Water overflow from bottom of door SECTION 4 TROUBLESHOOTING SECTIONCOMMON PROBLEMS Problem Wash motor doesn’t operate on manual washProblem Machine doesn’t drain when “OFF/DRAIN” switch is pressed Problem No indication of pressureProblem Rinse water not at required temperature range SECTION SERVICE PROCEDURES PREPARATION SECTION 5 SERVICE PROCEDURESRINSE SOLENOID VALVE REPAIR PARTS KIT 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 AFTER MAINTENANCE ACTIONS SPECIAL PARTSSolenoid Valve Plunger Kit Includes plunger and spring Part number VACUUM BREAKER REPAIR PARTS KIT VACUUM BREAKER REPAIR PARTS KIT CONTINUED REPLACING THE BOOSTER TANK HEATER REPLACING THE PUMP MOTOR/REPLACING THE HEATERREPLACING THE PUMP MOTOR HeaterREPLACING THE DRAIN VALVE REPLACING THE DRAIN VALVE MINAL ON THE MOTORReplacing 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 ITEM QTY DESCRIPTION GAUGE PANEL ASSEMBLYSECTION 6 PARTS SECTION 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 This panel is used with the following External Control Box Option AMTRAK External Control Box OptionMfg. No INSIDE VIEW of AMTRAK & EXTERNAL OPTIONS ELECTRICAL PANEL ASSEMBLY EXTERNAL OPTION & AMTRAK OPTIONFRONT VIEW EXTERNAL OPTION RIGHT SIDE VIEW AMTRAK OPTIONELECTRICAL PANEL ASSEMBLY EXTERNAL OPTION & AMTRAK OPTION CONTINUED Nut, Nylon Wing, 1/4”-20 Control Panel Assembly 05700-011-40-93 KICK PLATE ASSEMBLYDecal, Power Disconnect Warning 09905-021-47-07 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 220 Volt Solenoid Valve Assembly, 1/2” Complete 110 Volt Solenoid Valve Assembly, 1/2”Coil & Housing only, 1/2” Complete Vacuum Breaker Assembly, 1/2” NPTDRAIN VALVE ASSEMBLY SECTION 6 PARTS SECTIONDRAIN PLUMBING ASSEMBLY WASH MOTOR TO WASH TUB ASSEMBLY JP-24B/BFRINSE TANK PhaseRINSE TANK & COMPONENTS/STRIP HEATER KIT 40F RiseDOOR ASSEMBLY Order this entire assembly usingDoor Latch Assembly MISCELLANEOUS DOOR SUB-ASSEMBLIESWash Arm Assembly Rinse 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