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 7 of 30Extended compressed air only operations necessitate connection of an externalwater source to the pump inlet and closing of the tank to pump valve far propercompressor cooling. In this case, cooling water will flow into the booster tank at 10-20 GPM, eventually overflowing the tank.C. Shut-Down Procedure Close air valve(s) Turn off Foam proportioner Flow clear water through discharge hose(s) until no bubbles are present Close discharge valve(s) Move Auto-sync controls to: Electric = UNLOAD Shut system downAfter the system is shut down, the compressor system will vent itself, creating an audible hissas compressed air is evacuated from the pressure vessel/sump.WARNINGS Compressed air can be dangerous. Read and understand the operatinginstructions for the Waterous compressed air foam unit and individual componentsprior to operating. DO NOT use the compressed air foam unit as an air source for SCBA or anybreathing air supply. Discharge outlets that are capped, hose lines that are valved and charged and theair compressor sump may contain compressed air. Relieve all pressure BEFOREattempting to remove any caps, fittings, and nozzles or to perform maintenance toprevent serious personal injury. Nozzle reaction force is significantly increased at the time the nozzle valve isopened in compressed air foam operations. OPEN CAFS NOZZLES SLOWLY! Operating the compressed air foam unit with water and compressed air pumpedthrough a discharge without foam concentrate will create a potentially dangerouscondition known as "Slug Flow"; where unmixed pockets of water and air arepassed through the nozzle, causing erratic nozzle reaction. For compressed air foam operations, use only fire hose that is rated at 200 PSI orhigher working pressure. The unit operator should have a thorough understanding of "Boyle's Law" (Thelaw of compressed gases) prior to operating the compressed air foam unit. |
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