Replacing the Radiant Heater
Required tools
crosshead screwdriver
ohmmeter
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To avoid electrical shock or property damage, move the power switch to OFF and disconnect power. |
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Remove electrical power supplied to the cabinet.
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Remove the four screws located at the bottom of the heater housing - two on each end.
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Remove the electrical wires from the heater. Check with an ohmmeter across end terminals. The ohm reading should be as follows:
Model/Volts Ohms HCW-3 (208 volts)
43 ohms
HCW-3 (230 volts) 53 ohms HCW-5 lower (208 volts) 43 ohms HCW-5 lower (230 volts) 53 ohms HCW-5 upper (208 volts) 108 ohms HCW-5 upper (230 volts)
132 ohms
HCW-8 lower (208 volts) 22 ohms HCW-8 lower (230 volts) 26 ohms HCW-8 upper (208 volts) 54 ohms HCW-8 upper (230 volts) 66 ohms If a heater checks defective, replace it by continuing with this procedure.
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Slide the brackets off the defective heater and install brackets on new heater.
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Install the new heater in reverse order.
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Turn on the power supply at the breaker box.
