Hubbell Electric Heater Company MSE manual Section V Servicing & Replacement of Parts

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SECTION V - SERVICING & REPLACEMENT OF PARTS

WARNING / CAUTION

Before servicing or replacing any part make sure to turn the power supply switch to the OFF position.

SURFACE TEMPERATURE HIGH LIMIT CUT-OFF

1.Disconnect power from unit.

2.Remove access cover.

3.Disconnect the four (4) 14 gauge wires.

Control Wires

4. Remove the two (2) mounting screws.

Mounting Screws

5.Replace control and install new high limit switch by performing above steps in reverse order. See wiring diagram included with drawing for assistance.

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Contents Electric Heater Company Hubbell Electric Heater Company BOXSTRATFORD, CT Table of Contents Section Title Page Tank Connections Section I General Description and ConstructionTank Heating ElementTemperature High Limit Switch Control ThermostatOptions Magnetic ContactorOuter Shell and Insulation Low Water Cut-OffDial Temperature and Pressure Gauge Fused Low Voltage TransformerVacuum Relief Valve Individually Fused Elements On/Off SwitchElectro-Mechanical Timer Built-in Circuit BreakerWater Heater Placement Securing of HeaterMounting Dimensions Piping Installation Filling the HeaterElectrical Installation Final ChecksFreezing Section III Scheduled Maintenance and OperationMaintenance and Operation Quarterly InspectionAnnual Inspection Section IV Troubleshooting Symptom Probable Cause Corrective Action / RemedyPage Section V Servicing & Replacement of Parts Surface Temperature High Limit CUT-OFFImmersion Temperature High Limit CUT-OFF Heating Element Page Surface Mounted Thermostat Immersion Thermostat Magnetic Contactor Relief Valve Section VI Miscellaneous Charts and Formulas Element Chart FormulasTorque Values Section VII ABS Type Approval Program Page Page