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

Page 15

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 or three (3) 14 gauge wires and a jumper, as required.

Control Wires

4.Remove the two (2) mounting screws or disconnect from thermostat, as required.

Mounting Screws

5.Replace control and install new high limit switch by performing above steps in reverse order.

15

Image 15

Contents Electric Heater Company STRATFORD, CT Hubbell Electric Heater CompanyTable of Contents Section Title Page Heating Element Section I General Description and ConstructionTank Tank ConnectionsTemperature High Limit Switch Control ThermostatOuter Shell and Insulation Low Water Cut-Off OptionsSecuring of Heater Water Heater PlacementMounting Dimensions Filling the Heater Piping InstallationFinal Checks Electrical InstallationQuarterly Inspection Section III Scheduled Maintenance and OperationMaintenance and Operation FreezingAnnual Inspection Symptom Probable Cause Corrective Action / Remedy Section IV TroubleshootingSurface Temperature High Limit CUT-OFF Section V Servicing & Replacement of PartsImmersion Temperature High Limit CUT-OFF Heating Element Page Page Surface Mounted Thermostat Immersion Thermostat Relief Valve Section VI Miscellaneous Charts and Formulas Element Chart Formulas Torque Values Section VII ABS Type Approval Program Page Page