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Hubbell Electric Heater Company V20, V10 manual Magnetic Contactor, Disconnect power from unit

Models: V20 V10

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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.

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Hubbell Electric Heater Company V20 Magnetic Contactor, Disconnect power from unit, Control Wires Line Wires Load Wires

Contents

BASE MODEL “ V10 and V20 ” OPERATING AND MAINTENANCE MANUAL FORELECTRIC INDUSTRIAL PROCESS WATER HEATER ELECTRIC HEATER COMPANYHUBBELL ELECTRIC HEATER COMPANY P.O. BOX STRATFORD, CT PHONE 203 FAXWARNING / CAUTION TABLE OF CONTENTS SECTIONTITLE PAGE #Page TANK CONNECTIONS GENERAL DESCRIPTIONCONSTRUCTION SECTION I - GENERAL DESCRIPTION AND CONSTRUCTIONTEMPERATURE HIGH LIMIT SWITCH CONTROL THERMOSTATMAGNETIC CONTACTOR OUTER SHELL, INSULATION, AND SUPPORTS OPTIONSLow Water Cut-Off Fused Low Voltage TransformerDial Temperature and Pressure Gauge Vacuum Relief ValveIndividually Fused Elements Built-inCircuit BreakerSpecial Customized Features Building Management System BMSPump Interlock Terminal Block Silicon Control RectifierWATER HEATER PLACEMENT PIPING INSTALLATIONWARNING / CAUTION SECTION II - INSTALLATIONELECTRICAL INSTALLATION FILLING THE HEATERFINAL CHECKS 1 - Terminal Block 2 - Magnetic Contactor 3 - Heating Element4 - Low Water Cut-Off,if supplied 7 - Control Thermostat6 - High-TemperatureLimit Switch 1 - Terminal Block 2 - Magnetic Contactor3 - Heating Element 4 - Low Water Cut-Off,if suppliedPage SECTION III - SCHEDULED MAINTENANCE AND OPERATION MAINTENANCE AND OPERATIONFREEZING QUARTERLY INSPECTIONANNUAL INSPECTION 1.Flush tank as follows a.Shut off power supplyg.Turn power supply ON b.Close valve on hot water outlet pipingSECTION IV - TROUBLESHOOTING SymptomProbable Cause Corrective Action / RemedyWater temperature below Faulty thermostatCheck thermostat adjustment settings at all timesSECTION V - SERVICING & REPLACEMENT OF PARTS SURFACE TEMPERATURE HIGH LIMIT CUT-OFFWARNING / CAUTION IMMERSION TEMPERATURE HIGH LIMIT CUT-OFF 1.Disconnect power from unit HEATING ELEMENTIMMERSION THERMOSTAT 1.Disconnect power from unit 2.Disconnect line and load wires to contactor3.Disconnect two 2 14 gauge control circuit wires Control Wires Line Wires Load WiresRELIEF VALVE SECTION VI - MISCELLANEOUS CHARTS AND FORMULAS ELEMENT CHARTFORMULAS TORQUE VALUES