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Hubbell Electric Heater Company V20, V10 manual Section V - Servicing & Replacement Of Parts

Models: V20 V10

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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.

SURFACE TEMPERATURE HIGH LIMIT CUT-OFF

1.Disconnect power from unit.

2.Remove access cover.

3.Disconnect the four (4) 14 gauge wires.

Control Wires

4. Remove the two (2) mounting screws.

Mounting Screws

5.Replace control and install new high limit switch by performing above steps in reverse order. See wiring diagram included with drawing for assistance.

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Hubbell Electric Heater Company V20 Section V - Servicing & Replacement Of Parts, Surface Temperature High Limit Cut-Off

Contents

BASE MODEL “ V10 and V20 ” OPERATING AND MAINTENANCE MANUAL FORELECTRIC INDUSTRIAL PROCESS WATER HEATER ELECTRIC HEATER COMPANYWARNING / CAUTION HUBBELL ELECTRIC HEATER COMPANY P.O. BOXSTRATFORD, CT PHONE 203 FAX TABLE OF CONTENTS SECTIONTITLE PAGE #Page TANK CONNECTIONS GENERAL DESCRIPTIONCONSTRUCTION SECTION I - GENERAL DESCRIPTION AND CONSTRUCTIONMAGNETIC CONTACTOR TEMPERATURE HIGH LIMIT SWITCHCONTROL THERMOSTAT 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 timesWARNING / CAUTION SECTION V - SERVICING & REPLACEMENT OF PARTSSURFACE TEMPERATURE HIGH LIMIT CUT-OFF 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 FORMULAS SECTION VI - MISCELLANEOUS CHARTS AND FORMULASELEMENT CHART TORQUE VALUES