Waterous 500-100-P Operation Manual
Also see for 500-100-P: Operation and maintenance instructions
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Contents
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Waterous Arizona Operations 500-100 & 120-P Operations Rev 1Page 5 of 30I. Water Pumping OperationsAll unit operations begin with pumping water. These steps must be followed foroperations involving pumping water, foam solution, compressed air or compressedair foam.1. Connect the hose(s) to the desired discharge(s).2. If pumping water from an on board booster tank, fully open the tank to pumpvalve.3. If pumping from an overboard source, the tank to pump valve should be fullyclosed.4. Engage the PTO5. If so equipped, turn on the main power switch to the CAFS unit.6. Throttle-up to desired pressure.If pump pressure is absent, it will be necessary to prime the pump.7. Open desired discharge valve(s) and throttle-up to desired pressure.CAUTION: Running the unit with a dry fire pump can cause damage to the pump andair compressor system.II. Foam Solution OperationsFollow the instructions above for water pumping operations.Turn on the foam proportioner to inject foam concentrate into the water stream. Referto the foam proportioner operation manual for instructions in the proper operation ofthe installed proportioning system.III. Compressed Air Foam OperationsFollow the instructions above for foam solution operations. Safe operations dictatethe presence of foam concentrate in the water stream prior to the injection ofcompressed air. If foam concentrate is not present, a condition known as “slug flow”will occur. This is where unmixed water and air is discharged through a nozzle in anerratic manner.1. Set water discharge pressure at the desired level.Discharge pressures for compressed air foam operations typically rangebetween 80 and 120 PSI in a flow state.NOTE: Compressed air foam does not have the hydraulic characteristics of plainwater or foam solution. Therefore, standard pump hydraulics practices do notapply to CAFS operations. |
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