M
EDIUM
D
UTY
C
OUNTERLINE
A
DJUSTMENTS
O
PERATOR
’
S
M
ANUAL
1178822
REV
3
P
AGE
17
ADJ
UST
M
E
N
TS
All orifice sizes and burner rate are properly set at the factory and should not be altered.
Over-rated burners cause poor burner and pilot performance, resulting in less heat, and wasted gas.
Over-gassed burners DO NOT heat griddles as efficiently as those that are properly adjusted. Such
conditions also create “hot spots” on griddles. Floating and unstable burner and pilot flames will result when
solid tops are lowered into position because the rear openings of the burner compartment are not adequate
to vent the enormous flue products generated by over-gassed burners. The “unburned” gas will ignite at the
rear and burn in this section and even up inside the backguard or shelf venting system, causing structural
members in this area to deteriorate. Also, some of these hot flue products will vent forward into the manifold
compartment resulting in problems with valves and thermostats due to overheating. AGAIN, over-rated
burners waste energy and cause service problems.
SNAP-ACTION THERMOSTATIC VALVE
Thermostatic-griddle models have snap-action thermostatic valves that are adjusted at the factory. If the
griddle surface temperature is different from the thermostat dial setting, adjust the valve (see Figure 6
below).
Figure 6
Calibrate the valve using the screw at the base of the stem. Turn the screw clockwise to
increase the temperature, or counterclockwise to decrease the temperature.
Thermostat Calibration Screw
