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FIG 13 MASTER POWER SWITCH
Location:
The main power switch (FIG 13) is located un-
der the brewer in the base just behind the right front
leg on SH and GPR models and behind the front
support leg on TF models.
Test Procedure:
1. Disconnect the brewer from the power source.
2. Disconnect the wires from the power switch. With
the switch in the ON position, check for continuity
between terminals opposite each other.
There should be continuity between the two terminals
on each side when the switch is in the ON position,
no continuity when in the OFF position.
Location:
The warmer element(s) (FIG 12) is located under
the warmer plate(s).
Test Procedures:
1. Disconnect the brewer from the power source.
2. With a voltmeter, check voltage across the two
wires at the warmer element with the "ON/OFF"
switch in the "ON" position. Connect the brewer
to the power source. The indication must be 120
volts ac.
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 Wiring
Diagrams and check wiring harness.
4. Check the resistance across the two terminals on
warmer element. Resistance should be
144.0 ,
terminal to sheath - infinite (open).
If resistance is to specification, reconnect the two
wires to the warmer element.
If resistance is not to specification, replace the warmer
element.
Removal and Replacement:
1. Remove the three #4-40 screws securing the
warmer assembly to the brewer.
2. Lift the warmer assembly from the brewer.
3. Disconnect the two wires from the warmer element
terminals.
4. Remove the two #8-32 nuts securing the warmer
element to the warmer plate.
5. Securely install new warmer element.
6. Reconnect the two wires to warmer element ter-
minals.
7. Securely install warmer assembly on the brewer.
FIG 12 WARMER ELEMENTS
COMPONENT ACCESS (cont)
WARMER ELEMENTS (GPR MODELS)
41746 040210
MASTER POWER SWITCH