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17
FIG. 17-2 DV TANK HEATERS
Location:
The tank heaters are located inside the tank and secured
to the tank bottom.
Test Procedures:
1. With a voltmeter, check voltage across the white
wire (120V Models) or red wire (120/208-240V
Models) from the terminal block and black wire
from the control board. Connect brewer to the
power source. The indication must be 120 volts
ac for two wire 120 volt models or 208-240 volts
ac for three wire 120/208-240 volt models (during
a heating cycle).
2. Disconnect the brewer from the power source.
If voltage is present as described, proceed to #3.
If voltage is not present as described, refer to the Wir-
ing Diagrams and check wiring harness.
3. Disconnect the wires from the tank heater termi-
nals.
4. Check resistance value across tank heater terminals
and compare to chart.
If resistance is present as described, reconnect the
wires, the tank heater is ok.
If resistance is not present as described, replace the
tank heater.
TANK HEATERS
1425W
Small
Dia.
2268W
Large
Dia.
42461 0911809
1425W-120V 9.5-11.0
3500W-240V 15.1-17.6
1680W-120V 7.9-9.2
1800W-120V 7.4-8.7
2268W-120V 5.9-6.9
3000W-208V 12.9-15.1
3000W-240V 17.9-20.7
3500W-200V 10.5-12.2
TERMINAL TO SHEATH - INFINITE (OPEN)
HEATER RESISTANCE
NOTE- If any resistance is read between sheath and
either terminal, remove and inspect heater for cracks
in the sheath.
Removal and Replacement:
Remove the top cover and front access panel as 1.
previously described.
Drain water from the tank.2.
Disconnect all the hoses from the tank.3.
Remove the temperature probe from the grommet 4.
in the tank lid.
Remove the level probe from it's grommet.5.
Disconnect the green wire from the tank lid.6.
Disconnect the wires from tank heater terminals.7.
Remove the nuts securing the tank lid to the 8.
tank.
Remove the hex nuts securing the tank heater to 9.
the bottom of the tank. Remove tank heater(s) with
gaskets and discard.
Install new tank heater(s) with gaskets to the bot-10.
tom of the tank and secure with two hex nuts.
Install tank lid and secure with nuts.11.
Reconnect the wires to tank heater terminals.12.
FIG. 17-1 ICB TWIN TANK HEATERS