Groen BPM-15G, Руководство оператора

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OM-BPM/BPP-G 13
The following “action-reaction” outline is provided to help understand how the braising pan works.
1. When the power switch is turned on, it starts the spark igniter and opens the automatic valve for the pilot burner. The spark
ignites a pilot flame, which heats the sensor. The sensor then sends a signal to turn off the spark. The flame thereafter acts as
a standing pilot until the power is turned off.
2. If the pilot flame is not sensed within 70 seconds after spark begins, a timer shuts down the entire operation. To attempt a
second trial for ignition, turn off the power switch. Check the gas supply valves and wait five minutes before trying again by
switching power on. If there is still no pilot flame in four tries, close all valves, turn off the power, and contact an authorized
Service Agency.
3. When the operator sets a temperature on the controller, it allows the automatic gas valve to admit gas to the main burners,
where it is ignited by the pilot flame. When the braising pan reaches the set temperature, the relay switch opens. This stops
the signal to the gas control valve and shuts off gas to the main burner. The pilot flame remains lit. When the pan cools below
the set temperature, the relay switch closes and starts another cycle. On and off cycling continues and maintains the pan at the
desired temperature. This action is indicated by the Heat indicator light.
4. The controller controls heating by alternately calling for flames at the full capacity of the main burners and then signaling the
control to shut the burner off completely. Because the control works in this “all or nothing” way, the pan heats as fast as it can
until it reaches the set temperature. Turning the temperature dial to a higher temperature will cause heating to continue longer,
until the pan reaches the higher temperature, but it cannot make the pan heat any faster.
5. The pans are protected from overheating by a secondary thermostat. If the pan temperature rises above 425º F (218°C), the
thermostat causes the automatic gas control valve to close. When the pan cools, the thermostat automatically resets and
permits normal operation to continue.
6. The tilt switch will shut off all burners whenever the braising pan is tilted 10 degrees or more from the horizontal.
7. A gas pressure regulator, which controls gas pressure at the burner manifold is built into the gas control valve.
8. On manual tilt models, turning the tilting handwheel turns a worm gear, which turns a gear wheel on one of the trunnions
which support the pan body. Turning the gear wheel produces the tilting action.
9. On power tilt models, pressing the up/down switch operates a gear motor which turns worm and gear wheel as described in
item 8 above.
NOTE: Neither model will heat (operate) when the braising pan has been tilted 10 degrees or more from the horizontal.
Sequence of Operation