Cleveland Range KET-3-T manual Still exists, replace defective control box

Page 24

5. Remove kettle thermistor and allow toNo Replace defective thermistor cool. Remove edge connector from

control box. Test resistance across edge connector's pins #2 and #7. Is it approximately 100,000 ohms?

6.Turn the potentiometer on the control box clockwise to increase the maximum operating temperature. Does the kettle now achieve maximum operating pressure of 30-35 psi in an empty kettle?

Yes

Kettle is operating correctly.

No

Spray contact cleaner on control

 

terminals and edge connector. Try box

 

again. If problem still exists, replace

 

defective control box.

C/ Problem: Kettle is overheating.

Possible Causes

 

 

 

 

1.

Defective thermistor

2.

Defective potentiometer

3.

Defective 12 VDC relay.

.

 

 

(temperature control).

4.

Defective control box.

Fault Isolation Procedure

Step Test

1.Does the green LED turn off even though the contactors remain energized?

2.Unplug the control box and measure the resistance across the potentiometer (temperature control), Is the resistance approximately 0 ohms at maximum and 50,000 ohms at minimum setting?

Result

Remedy

Yes

Replace defective 12 VDC relay.

No

Go to step #2.

Yes

Go to step #3.

No

Replace defective thermistor.

3.Remove kettle thermistor and allow to cool Remove edge connector from control box. Test resistance across edge connector’s pins #2 and #7. Is it approximately 100,000 ohms?

Yes

Go to step #4.

No

Replace defective thermistor.

4.Turn the potentiometer (temperature control) on the control box counter- clockwise to decrease the maximum operating temperature. does the kettle continue to overheat?

Yes

Spray contact cleaner on control box terminal

 

and edge connector. Try box again. If problem

 

still exists, replace defective control box.

No

Kettle is operating correctly.

D/ Problem: Red LED remains illuminated even though water has been added.

Possible Causes

1.Defective low water level probe

Fault Isolation Procedure

Step Test

1.Remove wire from low water level probe and ground the wire to the body of the kettle. Does the red LED turn off?

2.Defective control box.

Result

Remedy

Yes

Replace or clean defective low water

 

level probe.

No

Spray contact cleaner on control box

 

terminals and edge connector. Try box

 

again. If problem still exist, replace

 

defective control box.

22

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Contents Operators Manual Table of Contents Installation InstallationGeneral InspectionAssembly Wire ConnectionElectrical Installation Checks CleaningWater Operating Instructions Item # Description FunctionOperating the Kettle Approximate Boiling TimesCleaning Instructions Care and CleaningMarine Lock Recommended Cleaners for Specific Situations Job Cleaning Agent CommentsService Parts Faucet AssemblyWarranty Kettle Bottom & Side Item no DescriptionCord & Plug Option Item no Description QTYConsole Components & Marine Lock Item no Description QTY Tilting Gearbox Assembly Gallon Kettle onlyElectrical Panel Maintenance Inspection and Maintenance Check ListBearing Lubricating Procedure Calibrating Procedure Pressure Relief Valve Periodic Testing ProcedureReservoir Fill Procedures Kettle Venting InstructionsVacuum Leak Test Procedure Repairing Leaks in Steam Jacketed Kettle FittingsMarine Lock Testing Procedure Diagnostic Guide Possible CausesPossible Causes Still exists, replace defective control box Wiring Diagram Gallon Symbol Legend page 1 Symbol Legend page 2