SM-27
Jade Range LLC
– A Middleby Company
Titan
TM
Series Heavy Duty Range
Model Series JTRH, JMRH & JTRHE
REVIEW COPY
7
6. Turn the dial to the lowest temperature setting
(150°F) and check the bypass flame. It should
be only big enough to keep the burner lit all the
way around with little blue dots of flame.
Adjust as necessary.
NOTE
: Throughout the calibration process it will
be necessary to recognize when the thermostat is
in bypass.
7. Note the size of the bypass flame.
8. Turn the dial up enough for the flame to come
on at least 1/4" tall.
9. When the flame is in bypass again, take a
temperature reading in the area previously
identified as the probe location.
If the temperature is less than 25°F different from
the dial setting, calibration is not necessary.
If the temperature is more than 25°F different
from the dial setting, calibrate according to the
following steps.
10. With the dial in place, use a small screwdriver
through the opening in the front of the dial.
Locate and depress the calibration screw.
DO NOT TURN THE CALIBRATION SCREW.
11. Rotate the dial to match actual temperature on
the griddle plate. Do not turn calibration screw.
12. Release the calibration screw.
13. Turn the dial to increase temperature 50°F.
14. Watch the flame. As soon as the flame is again
in full bypass, take a temperature reading.
15. If the temperature is still more than 25°F
different from the dial setting, the thermostat
may need to be replaced.
16. Turn off the thermostat so as not to cause
false readings on the other zones.
17. Repeat the process for each thermostat/zone.
18. When all the thermostats are calibrated
reassemble the manifold cover and the
thermostat dials/bezels.
IGNITION MODULE
CIRCUIT CHECK
WARNING
THIS PROCEDURE REQUIRES ELECTRICAL
TESTS OR MEASUREMENTS WHILE POWER
IS APPLIED TO THE EQUIPMENT. EXERCISE
EXTREME CAUTION AT ALL TIMES.
WARNING
IF TEST POINTS ARE NOT EASILY ACCESSIBLE,
DISCONNECT POWER AND PERFORM THE
ELECTRICAL LOCKOUT/TAGOUT PROCEDURE,
ATTACH TEST EQUIPMENT AND RECONNECT
POWER TO TEST.
The spark module sends high-voltage DC pulses to
the pilot igniter when power switch is ON. When the
pilot is lit, the module senses the presence of the
pilot flame and stops sparking automatically by
sensing the change in resistance when the spark
has to travel through the pilot flame.
If sparking does not occur at the pilot, perform the
following procedure to troubleshoot the problem.
Figure 33: Ignition Module Circuit Check
A. 120VAC Terminals
B. High Voltage Sparker Terminal
C. Grounding Grommet
NOTE:
If module is removed from equipment (as
shown in illustration) a jumper wire must be inserted
between the grounding grommet and the frame of
the range. This is the required ground for the oven
sparker.
1. Remove the oven control panel according to
the procedure under COVERS AND PANELS.
