Hubbell Electric Heater Company CR manual Section V Servicing & Replacement of Parts, Magnetic Contactor

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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.

MAGNETIC CONTACTOR

1.Disconnect power from unit.

2.Disconnect line and load wires to contactor.

3. Disconnect two (2) 14 gauge control circuit wires.

Control Wires

Line Wires

Load Wires

4. Loosen two (2) holding screws and remove contactor.

Mounting Screws

(Bottom screw not shown)

5.Replace with new contactor using reverse procedure.

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Contents Electric Heater Company STRATFORD, CT Hubbell Electric Heater CompanyBOX Table of Contents Section Title Page Vessel Connections Section I General Description and ConstructionPressure Vessel Outer SHELL, INSULATION, and Supports Flow SwitchHeating Element Electrical EnclosureControl Thermostat Fused LOW Voltage Transformer Temperature High Limit SwitchMagnetic Contactor LOW Water CUT-OFF Individually Fused ElementsOptions Stainless Steel JacketAudible Alarm On / Off Control SwitchBuilt-In Circuit Breaker Building Management System BMSSilicon Control Rectifier Dial Temperature and Pressure GaugeSpecial Customized Features Piping Installation Heater PlacementFinal Checks Electrical InstallationFilling the Heater Maintenance and Operation Section III Scheduled Maintenance and OperationFreezing Quarterly InspectionSymptom Probable Cause Corrective Action / Remedy Section IV TroubleshootingPage Section V Servicing & Replacement of Parts Immersion Temperature High Limit CUT-OFF Immersion Thermostat Heating Element Relief Valve Section VI Miscellaneous Charts and Formulas Nema Enclosures Electrical Data Formulas Torque Values

CR, CR specifications

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