Middleby Marshall PS629G Series, Owner'S Operating & Installation Manual

Page: 23 / 52

SECTION 2
INSTALLATION
23
Open the main gas supply valve. Switch the
circuit breaker/fused disconnect to the ON
(“I”) position.
Start the oven according the directions in the
Operation section of this Manual. Adjust the
temperature controller to the maximum
setting 600°F (316°C).
Measure the supply (inlet) pressure.
Switch the oven off. Close the main gas
supply valve, and switch the circuit
breaker/fused disconnect to the OFF (“O”)
position. Remove the manometer, and close
the inlet tap.
Compare the measured supply (inlet)
pressure to the nominal pressures shown in
Table 1-5 (in the Description section of this
Manual).
If the supply pressure is lower or higher than the
nominal pressure, the reason should be investigated
and the gas supplier contacted.
For natural gas ovens, if the measured supply
pressure is lower than 6" W.C. (14.9mbar) for natural
gas/11" W.C. (27.4mbar) for propane, or higher than
8" W.C. (19.9mbar) for natural gas/14" W.C.
(34.9mbar) for propane, contact the gas supplier. DO
NOT OPERATE THE OVEN or adjust the oven
controls.