started and stopped manually or programmed or automatic operation.
a. Fan Start
The exhaust and air
b. Fan Stop
The exhaust and air
c. Wash Start
The wash cycle can be started manually by pressing "FAN OFF/WASH ON'' on the PAWS panel. If the fans are on, they will stop immediately. The display will indicate "WASH 1" and the total time [in hours and minutes] remaining until the wash cycle ends.
d. Wash Stop
The wash cycle can be stopped manually by pressing "FAN OFF/WASH OFF" on the PAWS panel. The wash cycle will stop immediately. The PAWS display will read "FAN OFF/WASH OFF".
2. Trouble Conditions
a. Low Detergent Indicator
If the detergent level drops below the bottom of the detergent probe, the PAWS panel horn will sound and the display will flash "DETERGENT LOW". The horn can be silenced by pressing the "VFC Horn Silence" switch, but the trouble condition will continue to be displayed. The detergent pump will not operate until the detergent tank is refilled. The fan and wash cycles will continue to operate normally, however, the display will continue to flash "LOW DETERGENT". When the detergent tank is refilled, the trouble condition will automatically clear itself after approximately 10 seconds.
b. Supervised Water Valve [optional]
If your PAWS panel is equipped with the optional supervised valve, the PAWS panel horn will sound and the display will flash
"PLENUM WASH AND FIRE CYCLES LOST" when the valve is closed. The horn can be
silenced by pressing the "VFC Horn Silence" switch, but the trouble condition will continue to be displayed. The fan will operate normally, hot water will not flow during the wash cycle and the display will continue to flash "PLENUM WASH AND FIRE CYCLES LOST". When the valve is opened, the alarm condition will automatically clear itself. In the event that the detergent level drops below the probe and the optional supervised valve is closed at the same time, the horn will sound and the display will alternate between "DETERGENT LOW" and
"PLENUM WASH AND FIRE CYCLES LOST". The horn can be silenced by pressing the "VFC Horn Silence " switch.
3. Hood Plenum Fire Protection a. Automatic Operation
In the event of a fire in and/or under the ventilator, the fans will turn off and the plenum wash will be activated when the temperature at the duct collar exceeds 300°F. The display will read "AUTO FIRE CYCLE FAN OFF/WASH ON" and the PAWS panel alarm will sound. The alarm cannot be silenced. When the temperature at the duct collar drops below 300 °F, the PAWS panel will enter the fire delay cycle. During the fire delay cycle the fan will remain off and the hood plenum wash will remain on for a programmable period of time then automatically return to normal operation. The fire delay cycle can be terminated by pressing "FAN OFF/WASH OFF" on the PAWS panel. [See Sec. 4.b.2.c for setting Fire Delay Cycle Duration].
b. Manual Operation
The PAWS panel may be equipped with the optional "Manual Fire Switch". Pulling the "Manual Fire Switch" will turn on the exhaust fan(s) and activate the plenum hood wash to act as a fire barrier. The display will read "MAN'L FIRE CYCLE FAN ON/WASH ON" and the PAWS panel alarm will sound. The alarm cannot be silenced. After the "Manual Fire Switch" is reset, the PAWS panel will enter the fire delay cycle. During the fire delay cycle the exhaust fan will remain on for a programmable period of time then automatically return to normal operation. The fire delay cycle can be terminated by pressing "FAN OFF/WASH OFF" on the PAWS panel. [See Sec. 4.3 for setting Fire Delay Cycle duration].
4.Programming Instructions [Refer to fig. 17A
&17B]
a. Setting the Clock
13
