B. THERMOPILE OUTPUT CHECK
(“B” Reading. Thermostat contacts OPEN - Main burner
OFF.)
1. Thermopile system - 325 millivolts minimum. If the
minimum millivolt reading is not obtainable, readjust
thermopile for maximum millivolt output. If millivolt reading
is still below minimum specified, replace thermopile.
C. THERMOSTAT RESISTANCE CHECK
(“C” Reading. Thermostat contacts CLOSED - Gas valve
knob “ON”. Main burner should be ON.)
1. If the “C” reading drops more than 80 millivolts, the
resistance in the system is excessive and must be
reduced. To correct:
a. Clean and tighten thermostat leads and connections.
b. Shorten or replace theirmostat lead wires.
c. Cycle thermostat rapidly (manually turn dial) to clean
contacts.
D. AUTOMATIC PILOT DROPOUT CHECK
1. Hold gas valve knob depressed in pilot position until
maximum output is observed. Then extinguish pilot and
observe meter.
2. Dropout of automatic pilot magnet (sound should be
audible) should occur between 75 millivolts and 25
millivolts. If dropout occurs outside these limits, change
the valve.
WARNING AND OPERATING PLATES
All warning and operating plates on the Keating
MIRACLEAN® Griddle should be in place at all times.
If plates are damaged or lost, replace them
immediately.
10
SERVICE DIAGNOSIS
The following diagnosis is only to be used as a guide to qualified service personnel. Keating recommends that you use a
qualified service company. (Equipment still under warranty requires it.)
NOTE:
To correctly and quickly diagnose the system, the chart below should be followed in sequential order.
TROUBLE SHOOTING CHART
PROBLEM
PROBABLE CAUSE
SOLUTION
No pilot
a. Quick disconnect not engaged.
a. Open gas supply valve.
b. Gas supply not “ON”.
b. Press gas valve knob in “pilot” position
and hold.
c. Gas valve is in "OFF" position.
c. Reconnect quick disconnect.
d. Air in gas lines.
d. Turn valve knob to "pilot".
e. Faulty Piezo Ignitor.
e. Replace ignitor.
Pilot won’t stay on
a. Loose wires.
a. Tighten connections on all wires.
b. Faulty thermopile.
b. Replace thermopile.
c. Inadequate gas supply.
c. Increase line pressure.
d. Bad gas valve.
d. Replace gas valve.
