SERVICE (cont.) |
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TANK HEATER | NOTE: If the tank heater remains unable to heat, re- | ||
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| move and inspect heater for cracks in the sheath. | |
| Removal and Replacement: | ||
| 1. | Disconnect the black wire and the white or red | |
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| wire from the tank heater terminals. | |
| 2. | Remove sprayhead and the hex nut securing the | |
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| sprayhead tube to the hood. Set aside for reas- | |
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| sembly. | |
| 3. | Disconnect vent tube and water inlet tube. | |
| 4. | Remove the six #10 thread cutting screws secur- | |
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| ing the tank lid to the tank. | |
| 5. | Remove the tank lid with limit thermostat, spray- | |
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| head tube, tank heater and vent tube. | |
| 6. | Remove the two hex nuts securing the tank heater | |
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| to the tank lid. Remove tank heater with gaskets | |
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| and discard. | |
P3047 | 7. | Install new tank heater with gaskets on the tank | |
FIG. 18 TANK HEATER |
| lid and secure with two hex nuts. | |
8. | Install tank lid with limit thermostat, sprayhead | ||
Location: | |||
| tube, tank heater and vent tube using six #10 | ||
The tank heater is located inside the tank and se- |
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| thread cutting screws. | ||
cured to the tank lid. |
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9. | Secure sprayhead tube to hood using a hex nut. | ||
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Test Procedures: | 10. | Install sprayhead. | |
11. | Connect vent tube and water inlet tube to fitting. | ||
1. Disconnect the brewer from the power supply. | |||
12. | Reconnect the wires to the limit thermostat, tank | ||
2. With a voltmeter, check the voltage across the | |||
| heater. See limit thermostat section in this manual | ||
black and white wires on 100 volt and 120 volt |
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| when reconnecting wires. | ||
models or the black and red wires for 230 volt |
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13. | Refer to Fig.19 when reconnecting the tank heater | ||
models. Connect the brewer to the power source. | |||
| wires. | ||
The indication must be: |
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a)120 volts ac for two wire 120 volt models.
b)230 volts ac for two wire 230 volt models.
c) 100 volts ac for two wire 100 volt models. | BLK to Control | |
Thermostat | ||
3. Disconnect the brewer from the power source. | ||
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If voltage is present as described, proceed to #4 | WHI to Power Cord | |
(100/120V)or | ||
If voltage is not present as described, refer to the | RED to Thermal Fuse | |
Wiring Diagrams and check wiring harness. | (230V) |
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.FIG. 19 TANK HEATER TERMINALS P1284.80
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