Hubbell Electric Heater Company J Section V Servicing & Replacement of Parts, Heating Element

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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 to the unit OFF.

HEATING ELEMENT

1.Disconnect power from unit.

2.Shut off incoming water supply.

3.Attach hose to drain connection.

4.Lift manual release lever on relief valve to let air into system or break union on outgoing water line.

5.Drain water from tank.

6.Disconnect the wires from the heating element terminals.

7.Unscrew element with a 1-7/8” 6-point socket with no bevel.

O-Ring Groove

O-Ring

Terminal Connections

#220 Buna-N O-Ring

8.Install new #220 Buna-N o-ring gasket and install new heating element. NOTE: Hubbell recommends lubricating the o-ring with Parker O-Lube prior to installation.

9.Rewire element according to the wiring diagram as shown in the Section II.

10. Fill tank and check around element for any leaks.

MAGNETIC CONTACTOR

1. Disconnect power from unit.

2. Disconnect line and load wires to contactor.

3. Disconnect the control circuit wires.

Control Wires

Line Wires

Load Wires

4. Loosen holding screws and remove contactor.

Mounting Screws

5. Replace with new contactor using reverse procedure.

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Contents Operating and Maintenance Manual for Electric Booster Heater Hubbell Electric Heater Company Seymour Street STRATFORD, CTTable of Contents Section Title Section I General Description and Construction CapacityPage Tank Connections Power Circuit BreakersConstruction Tank Heating ElementOptional Equipment Dial Temperature and Pressure GaugePressure Reducing Valve Slide Brackets for Hanging Support Mounting Section II Installation and START-UPWater Heater Placement Manual Release Lever Filling the Heater Electrical InstallationOptional XB1 LOW Temperature Interlock Optional Remote Alarm Contacts Common noFor Remote ON/OFF Control Final ChecksWiring Chart Diagram 1WT 1NT WT L1 L2 L3 13 NT NCB L1 L2 L3 Page Freezing Section III Scheduled Maintenance and OperationMaintenance and Operation Controller OperationQuarterly Inspection Section IV Troubleshooting Error Messages Err, No, H2OContactor Care MiscellaneousTroubleshooting Flow Charts OK?Continuous No Display Is the circuit Breaker tripped at Source? Section V Servicing & Replacement of Parts Control Board Relief ValveSensor Probe Section VI Service Parts List Category Description Volts Ohms Hubbell P/NPart Wire Size Torque inlbs Torque ftlbs Section VII Torque ValuesSection Viii Warranty Information Limited Warranty Such Warranties do not Cover