SERVICE (cont.)
TANK HEATER
P2186.45 |
FIG. 12 TANK HEATER |
Location:
The tank heater is located inside the tank and secured to the tank lid.
Test Procedures:
1.Disconnect the brewer from the power supply.
2.Check the voltage across the black and white wires on 120 volt models or the black and red wires for 120/240 volt models, 200 volt models and 240 volt models with a voltmeter. Connect the brew to the power source. The indication must be:
a)120 volts ac for two wire 120 volt 20 amp models .
b)240 volts ac for three wire 120/240 volt models.
c)200 to 240 volts ac for two wire 200 or 240 volt models.
3.Disconnect the brewer from the power source.
If voltage is present as described, proceed to #4
If voltage is not present as described, refer to the Wiring Diagrams and check wiring harness.
4. Disconnect the black wire and the white wire or red
wire from the tank heater terminals.
5.Check for continuity across the tank heater termi- nals.
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 heater for cracks in the sheath.
Removal and Replacement:
1.Disconnect the water supply tube from the fill basin.
2.Remove the tank inlet fitting securing the fill basin to the tank lid, remove fill basin and tank inlet gasket. Set all three parts aside for reassembly.
3.On brewers with faucet
4.Disconnect the black wire on the limit thermostat from the tank heater switch. On late model brew- ers also disconnect the blue wire from the limit thermostat to the control thermostat.
5.Disconnect the black wire and the white or red wire from the tank heater terminals.
6.Remove sprayhead and the hex nut securing the sprayhead tube to the hood. Set aside for reas- sembly.
7.Remove the eight
8.Remove the tank lid with limit thermostat, spray- head tube, tank heater, coil assembly and control
thermostat w/bracket (early models only).
9Remove the two hex nuts securing the tank heater to the tank lid. Remove tank heater with gaskets
and discard.
10.Install new tank heater with gaskets on the tank lid and secure with two hex nuts.
11.Install tank lid with limit thermostat, sprayhead tube, tank heater, coil assembly (brewers with faucet) and control thermostat with bracket (early brewers only) using eight
12.Reconnect the inlet and outlet water lines to the faucet coil assembly.
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