SERVICE (cont.)
TANK HEATER
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| L2T | L1 |
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| 3 | T | |
L5T | L4 | TL |
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T |
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| P2231.35 |
FIG. 27 TANK HEATER | ||||
Location: |
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The tank heater is located inside the hood on the right rear of the tank lid.
Test Procedure:
Electro/Mechanical Models.
1.Disconnect the brewer from the power supply.
2 With a voltmeter, check the voltage across the black and the red wire on the tank heater. With the control thermostat turned to the "ON" position (fully clockwise), connect the brewer to the power supply and check the voltage across the wires. The indication should be:
a.) 208 volts ac for three wire 120/208 volt models
and 240 volts ac for three wire 120/240 volt models.
b.) 200 to 240 volts ac for two wire 200 or 240 volt models.
3. Disconnect the brewer from the power supply.
If voltage is present as described, proceed to #4.
If voltage is not present as described, refer to the Wiring Diagrams and check the wiring harness.
4.Disconnect wires from the tank heater.
5.Check for continuity across the terminals of the tank heater.
If continuity is present as described, reconnect the wires, the tank heater is operating properly.
If continuity is not present as described, replace the tank heater.
NOTE - If the tank heater remains unable to heat, remove and inspect the heater for cracks in the sheath.
DBC Models:
1.Disconnect the brewer from the power source.
2.Disconnect wires from heater.
3.Check for continuity across the tank heater ter- minals.
If continuity is present as described, the tank heater is operating properly.
If continuity is not present as described, replace the tank heater.
NOTE - If the tank heater remains unable to heat, remove and inspect the heater for cracks in the sheath.
Removal and Replacement:
1.Remove wires from tank heater.
2.Remove the four
3.Remove tank heater and gasket.
4.Install new tank heater and gasket with four
5.Refer to Fig. 28 when reconnecting the wires.
BLK to Limit Thermostat
RED to Contactor T1
BLK to Limit Thermostat
BLU Lead from Triac Assembly
ELECTRO/MECHANICAL | DBC |
FIG. 28 TANK HEATER TERMINALS
Page 33
P837
27362 092996
