Guide

1. Place the sensing probe of the test instrument in the middle of
the oven.
2. Light main burner and set the temperature dial to 400 degrees.
Allow the oven to heat until the burner flame cuts down to by-
pass. Check temperature on the test instrument. If temperature
does not read within 10 degrees of the dial setting, recalibrate
as follows:
3. Without turning, pull dial straight off.
4. Hold the calibration plate and loosen the calibration lock screws
until the plate can move independently of the control.
5. Turn the calibration plate so that the reading on the test
instrument is in line with the indicator mark. Hold plate firmly
and tighten screws.
Safety Warning Instructions
FOR MERTIK MAXITROL GV30 SERIES GAS COMBINATION
CONTROLS
To minimize the possibility of FIRE, EXPLOSION, and OTHER
HAZARDS.
1. All products, including gas pressure controls, used with
combustible instructions of the manufacturer, with government
codes and regulations, and plumbing codes and practices.
2. Do not use a gas combination control if it appears to have been
subjected to high temperatures, damaged in any way, or to
have been taken apart or tampered with. Any of these may be
signs of possible potentially dangerous combustion problems.
3. Installation
a. Turn off gas supply before starting installation.
b. Install the control properly so gas will flow as indicated by
the arrow on the casting.
c. Make sure markings or wording on control are not painted
over or obliterated.
Mounting positions (see diagrams below)
d. The gas control can be mounted horizontally 0 to 90
degrees in any direction from the upright position, i.e. from
the position when the knobs are on top. It can also be
mounted in a vertical position.
10
TROUBLESHOOTING THE MANUAL PILOT SYSTEM
PROBLEM: (Pilot will not stay lit.)
1. Check for drafts that could blow out the pilots.
2. Ensure the pilot has a sharp blue flame. If not, clean pilot
orifice. CAUTION: Be careful not to enlarge or distort the pilot
orifice when cleaning.
3. Make sure thermocouple is properly seated in the safety valve
(finger tight plus 1/4” turn with a wrench).
NOTE: DO NOT over-tighten, damage could result to the safety
valve.
4. Check pilot adjustment, adjust if necessary.
5. Have a qualified service technician properly test pilot system to
determine and correct the problem.
TO REMOVE AND REPLACE THE THERMOCOUPLE:
1. Remove all items needed to gain easy access to the pilot head
assembly.
2. Unscrew thermocouple lead in pilot head.
3. Unscrew thermocouple lead from safety valve and remove the
thermocouple.
4. To replace the thermocouple - reverse the above procedure
and test.
THERMOCOUPLE VOLTAGE RANGE: Comstock-Castle
equipment may be configured with the following. In the event of a
failure, replace with an identical component only!
Robertshaw thermocouple part #T46. Manufacturer suggested
operational voltage range, 18 to 24 milivolts.
NOTE: DO NOT over-tighten (finger tight plus 1/4” turn with a
wrench).
Figure 7
Robertshaw FD Thermostat
TO CALIBRATE THE ROBERTSHAW FDH, FDL, & FDO OVEN
THERMOSTAT FOR FRYERS, PIZZA AND BAKE OVENS:
!
SPECIAL WARNINGS
IF YOU DO NOT FOLLOW THESE INSTRUCTIONS
EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING
PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
NO UNTRAINED PERSON SHOULD ATTEMPT TO INSTALL,
MAINTAIN OR SERVICE GAS PRESSURE CONTROLS.