Technical Service Manual
MKG Series Gas Griddles
L22-296 Rev 0 (4/08)
Page 17
Photo 39
Photo 40
Photo 41
4.10.4 Thermistor Probe Replacement
The Solid State control has a separate temperature
sensing probe, the thermistor probe can be
removed without removing the Solid State control.
•
Remove the upper panel assembly according to
Section 4.1.2.
•
Remove the burner manifold bracket, Pilot
cover plate, and the burner seal plates
according to Sections 4.6 & 4.7.
•
Remove the two (2) screws(A) that hold the
probe retention plate in place, See Photo 39.
•
Slide the probe and plate outward together.
•
Disconnect the probe wires from the Solid State
control.
•
Slide the defective probe out from the retention
plate. Insert replacement probe into the vacated
hole of the plate to install together
•
Locate the probe hole(A) in the rear of the
sensing bulb slot, carefully align, and slide the
thermistor probe all the way into the slot, See
Photo 40.
•
Slide the retention plate up to the “V” bracket
and align the mounting holes and secure with
“New” self tapping screws if available.
4.11 SAFETY VALVE REPLACEMENT
Snap Action Models
If the test criteria from Section 4.2.4 have been
met, but the appliance does not operate properly,
replacement of the Safety valve may be required.
•
Shut off gas supply to appliance at the 1/2“
manual shut off valve(C), See Photo 1.
•
Disconnect 1/2” gas inlet(A) connection, 3/8”
gas outlet(B) connection(s), pilot gas outlet(C)
connection, and the pilot thermocouple(D)
connection, See Photo 41.
Note: Insure correct gas flow direction on the
replacement valve
•
Disassemble piping and fittings from defective
gas valve, and assemble onto the replacement
gas valve in the same orientation. Use pipe
sealant compound on all male threads.
•
Once piped, install the replacement valve into
the appliance. Re-secure all gas connections
to be leak free.
•
Re-attach the thermocouple to the safety valve
junction, take care to thread part correctly,
cross threading the junction may result in
component failure.
•
Test appliance for leaks, and proper operation
of the burner system.
4.12 SOLENOID VALVE REPLACEMENT-
Matchless Models “E” & “ST”
If all test criteria has been met according to
Section(s) 4.2.2 & 4.2.3, it may be required to
replace the gas valve solenoid. The procedure is
the same to replace either the pilot valve or main
gas valve solenoid.
