Operation
(AIR-POWERED MODELS)
With the pump and lines primed, and with adequate air pressure and volume supplied, the pump will start and stop as the gun/valve is opened and closed. In a circulating system, the pump will speed up or slow down on demand, until the air supply is shut off.
Use the air regulator (F) to control the pump speed and the fluid pressure. Always use the lowest air pressure necessary to get the desired results. Higher pressures cause premature tip/nozzle and pump wear.
WARNING
To reduce the risk of overpressurizing your system, which could result in component rupture and cause serious injury, never exceed the specified maxi- mum incoming air pressure to the pump (see the Technical Data on pages
Never allow the pump to run dry of the fluid being pumped. A dry pump will quickly accelerate to a high speed, possibly damaging itself. A pump runaway valve (C), which shuts off the air supply to the pump if the pump accelerates beyond the
Shutdown and Care of the Pump
WARNING
To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 12.
For overnight shutdown, relieve the pressure. Stop the pump at the bottom of the stroke to prevent fluid from drying on the exposed displacement rod and damaging the throat packings.
Always flush the pump before the fluid dries on the displacement rod. Never leave water or
Model 222835 Shown
Bleed hole must
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104
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Fig. 5
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