Brewmatic 1034505, Parts And Service Manual

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Page 9
Symptoms Solutions
5.
The hi-limit thermostat keeps
activating.
Check to make sure the tank has been filled with water. See the installation
instructions for filling procedures.
Test the hi-limit thermostat. Replace it if necessary.
Make sure that the thermostat sensor is inserted all of the way into the well. (See
#7)
Test the brewing temperature. Adjust the thermostat if necessary. (See #7).
Inspect the wiring on the hi-limit thermostat for loose, damaged or overheating
wires or terminals. Repair or replace wiring as necessary.
WARNING
Under no circumstance should the hi-limit thermostat be by-passed. In the event
of failure, the hi-limit thermostat should be replaced. Use only original or
authorized replacement parts.
6.
The coffee brewer trips the
buildings circuit breaker.
Too many appliances are connected on one electrical circuit.
The electrical circuits amperage rating is too low. Locate a correctly rated circuit
or call an electrician to correct this problem.
This coffee brewer may require a dedicated wall circuit or circuit breaker. Check
the electrical specifications.
Check to make sure the internal wiring is correct. Inspect for loose, damaged or
overheating wires or terminals. Repair or replace wiring as necessary.
Inspect the warmer elements for damage. Replace it if necessary.
Inspect the immersion element for damage. Replace it if necessary.
7.
The brewing temperature is
either too hot or too cold.
Make sure that the thermostat sensor is inserted all of the way into the well.
Adjust or replace the thermostat. Turn the adjustment screw clockwise to
increase the temperature, counter-clockwise to decrease. Turn the adjustment
screw a maximum of 1/8 turn per adjustment. Retest and adjust again if
necessary. The recommended temperature is between 192
° and 196 ° F. Test
below the brew cone with water only.
WARNING:
If the thermostat cannot be adjusted properly it should be replaced. The
thermostat is calibrated at the factory and no attempt should be made to
recalibrate it. Use only original or authorized replacement parts.
Test the thermostat sensor with an ohm meter. The sensor should read
approximately 100,000
Ω
at a normal room temperature of approximately 25c.
As the heat to the sensor increases, the reading should decrease to zero.
Note: The thermostat sensor must be coated with a thermal mastic heat transfer
compound. (KMP Catalog Number PM8 or equivalent.)
Inspect the inside of the tank for excessive hard water deposits on the thermostat
well. Clean the well if necessary.