Hubbell Electric Heater Company CR manual Section Vi - Miscellaneous Charts And Formulas, Nema Enclosures

Models: CR CR

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Contents

INSTANTANEOUS ELECTRIC CIRCULATION HEATER BASE MODEL “ CR ”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 CONSTRUCTION VESSEL CONNECTIONSGENERAL DESCRIPTION SECTION I - GENERAL DESCRIPTION AND CONSTRUCTIONHEATING ELEMENT FLOW SWITCHOUTER SHELL, INSULATION, AND SUPPORTS ELECTRICAL ENCLOSURECONTROL THERMOSTAT MAGNETIC CONTACTOR TEMPERATURE HIGH LIMIT SWITCHFUSED LOW VOLTAGE TRANSFORMER OPTIONS INDIVIDUALLY FUSED ELEMENTSLOW WATER CUT-OFF Stainless Steel JacketBuilt-InCircuit Breaker On / Off Control SwitchAudible Alarm Building Management System BMSSpecial Customized Features Dial Temperature and Pressure GaugeSilicon Control Rectifier WARNING / CAUTION HEATER PLACEMENTPIPING INSTALLATION SECTION II - INSTALLATIONFILLING THE HEATER ELECTRICAL INSTALLATIONFINAL CHECKS FREEZING SECTION III - SCHEDULED MAINTENANCE AND OPERATIONMAINTENANCE AND OPERATION QUARTERLY INSPECTIONProbable Cause SECTION IV - TROUBLESHOOTINGSymptom Corrective Action / RemedyCheck thermostat adjustment Water temperature belowFaulty thermostat settings at all timesWARNING / CAUTION SECTION V - SERVICING & REPLACEMENT OF PARTSMAGNETIC CONTACTOR IMMERSION TEMPERATURE HIGH LIMIT CUT-OFF IMMERSION THERMOSTAT 1.Disconnect power from unit HEATING ELEMENTRELIEF VALVE SECTION VI - MISCELLANEOUS CHARTS AND FORMULAS NEMA ENCLOSURESELECTRICAL DATA FORMULAS TORQUE VALUES