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8. Verify that the gas supply is adequate:
• Monitor gas pilot pressure as the main burner lights. Sufficient gas supply will not allow the
gas pilot pressure to drop when the main burner gas valve is energized.
• Gas pilot pressure dropping more than 0.25" W.C. indicates an insufficient supply. Larger
diameter (ID) gas supply piping to the steamer must be used.
• Turn on other gas equipment that shares the gas supply line to the steamer. Verify gas pilot
pressure does not drop more than 0.25" W.C. when the main burner gas valve is energized.
9. Steam generation will begin in about 10 minutes. Observe that the boiler pressure gauge
indicates steam pressure in the range of 5 to 12 psi. Burners on gas models cycle on at 8 psi
and off at 10 psi. Heaters on electric models cycle on at 10 psi and off at 12 psi. On first startup
each day, the pressure in the boiler of gas models may overshoot and the pressure relief valve
may open.
10. Set all timer dials to OFF.
11. Open all compartment doors and observe that no steam has entered the cooking compartments.
12. Close compartment doors.
13. Set all timer dials to 5 minutes. (Turn timer knob to 10 minutes or more to trip the switches,
then back to 5 minutes.)
14. Press the top of the compartment switch (Fig. 6 or 7) to start
the timer. Steam will be heard entering the compartments.
15. When timer dials are at 1 minute, steam flow to the
compartments stops and the compartment drain opens. The
cold water condenser in the drain may cycle on.
16. When the timers reach 0, silence the buzzers by pressing the
bottom of the compartment switch.
17. Open compartment doors. Verify that the compartments
were heated and drained
.
18. Press [ O ] on the power switch on the boiler to turn the
steamer off. The boiler will automatically blow down.
COMPARTMENT
OPERATION
REFER TO PAGE 18 – 19 FOR
AUTOMATIC
CONTROLS.
REFER TO PAGE 20 – 21 FOR
PRE
-
VENT
AUTOMATIC
CONTROLS
.