Gas Setup; Reading The Incoming Gas Pressure (Static); Reading The Gas Pressure At 100% Flame - TurboChef 3240 Service Manual

Gas Setup

A digital manometer that will read 0.10" WC
(2.54 mmH O, 0.249 mb) must be used to
2
properly set all pressures. If the minimum
pressure is not set correctly, the oven temperature
will slowly rise in stand-by mode and eventually
cause cooking issues as well as trip the high limit
temperature switch. Digital manometers (HHC-
3001) are available through TurboChef; call
800.90 (+1 214-379-6000) for pricing and
TURBO
availability. For information on accessing the
burner control, see page 18.
Reading the Incoming Gas Pressure
(Static)
1. Ensure the oven and all the equipment in the
piping system are off (pilot lights are
acceptable).
2. Remove the burner compartment cover and
cooling fan tube (refer to page 1).
3. Remove the screw from the upper tap of the
gas valve.
4. Attach the digital manometer to the upper
tap of the gas valve (Figure 4). This tap will
show the incoming pressure before the
internal regulator of the gas valve.
5. The pressures must be no less than 6" W.C.
(152.4 mmH O, 14.94 mb) and no more
2
than 14" W.C. (350.6 mmH
Otherwise, severe damage to the equipment
can occur.
6. Reattach the screw to the upper tap of the
gas valve.
Reading the Gas Pressure at 100%
Flame
1. Ensure the oven is on.
2. Select a cooking profile.
3. Remove the screw from the lower tap of the
4. During warmup (both fan speeds are at 65%
5. Verify that the maximum operating pressure is
NOTE: I
(101.6 mmH
6. If not, use an 8mm nut driver to adjust the
7. Reattach the screw to the lower tap of the
O, 34.87 mb).
2
Figure 4: Gas Valve
gas valve.
and the oven is at 100% flame), attach the
manometer to the lower tap of the gas valve
(Figure 4).
3.5" W.C. (88.9 mmH O, 8.71
2
operating I gas.
2L
gas requires a pressure of 4" W.C.
2L
O, 9.96 mb).
2
8mm nut (Figure 4) until the manometer
reads 3.5" W.C. (88.9 mmH
unless operating I gas, as noted above (turn
2L
clockwise to increase the pressure, counter-
clockwise to decrease the pressure).
gas valve.
mb), unless
O, 8.71 mb),
2
Red/White
Wires
Upper Tap
Lower Tap
8mm nut
5mm nut
3