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Hubbell Electric Heater Company B manual Magnetic Contactor, Disconnect power from unit

Models: B

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2.Disconnect line and load wires to contactor.

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.

Page 22

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Hubbell Electric Heater Company B Magnetic Contactor, Disconnect power from unit, Control Wires Line Wires Load Wires

Contents

ELECTRIC BOOSTER HEATER BASE MODEL “ B ”OPERATING AND MAINTENANCE MANUAL FOR ELECTRIC HEATER COMPANYSTRATFORD, CT PHONE 203 FAX HUBBELL ELECTRIC HEATER COMPANY P.O. BOXWARNING / CAUTION TITLE TABLE OF CONTENTSSECTION PAGE #Page SECTION I - GENERAL DESCRIPTION AND CONSTRUCTION GENERAL DESCRIPTIONCONSTRUCTION TANKMAGNETIC CONTACTOR TEMPERATURE HIGH LIMIT SWITCHCONTROL THERMOSTAT OUTER SHELL , INSULATION, AND SUPPORTSFused Low Voltage Transformer OPTIONSLow Water Cut-Off Dial Temperature and Pressure GaugeStainless Steel Outer Jacket Pressure Reducing ValveSuspension Straps WARNING / CAUTION WATER HEATER PLACEMENTPIPING INSTALLATION SECTION II - INSTALLATIONELECTRICAL INSTALLATION FILLING THE HEATERFINAL CHECKS 4 - Low Water Cut-Off,if supplied 1 - Terminal Block 2 - Magnetic Contactor3 - Heating Element 7 - Control Thermostat3 - Heating Element 6 – High-TemperatureLimit Switch1 - Terminal Block 2 - Magnetic Contactor 4 - Low Water Cut-Off,if suppliedPage FREEZING SECTION III - SCHEDULED MAINTENANCE AND OPERATIONMAINTENANCE AND OPERATION QUARTERLY INSPECTIONg.Turn power supply ON ANNUAL INSPECTION1.Flush tank as follows a.Shut off power supply b.Close valve on hot water outlet pipingProbable Cause SECTION IV - TROUBLESHOOTINGSymptom Corrective Action / Remedysettings at all times Faulty thermostatCheck thermostat adjustment phasesSURFACE TEMPERATURE HIGH LIMIT CUT-OFF SECTION V - SERVICING & REPLACEMENT OF PARTSWARNING / CAUTION 1.Disconnect power from unit HEATING ELEMENTIMMERSION THERMOSTAT 3.Disconnect two 2 14 gauge control circuit wires 1.Disconnect power from unit2.Disconnect line and load wires to contactor Control Wires Line Wires Load WiresRELIEF VALVE ELEMENT CHART SECTION VI - MISCELLANEOUS CHARTS AND FORMULASFORMULAS TORQUE VALUES