Operation/Maintenance
Starting and Adjusting the Pump
See the Typical Installation on page 5. Be sure the air regulator (E) and
Connect a suction hose (N) to the pump’s fluid inlet. Hold a metal part of the spray gun (M) firmly to the side of a grounded metal pail and hold the trigger open. Then open the pump’s
Cycle the pump slowly until all the air is pushed out and the pump and hoses are fully primed. Release the spray gun trigger and lock the safety latch. The pump should stall against pressure when the trigger is re- leased.
Follow the Pressure Relief Procedure on page 8, then install the spray tip in the gun.
With the pump and lines primed, and with adequate air pressure and volume supplied, the pump will start and stop as the spray gun is opened and closed. In a circulating system, the pump will run continuously and will speed up or slow down as supply demands until the air supply is shut off.
Use an adequately sized air regulator (E) to control the pump speed and the fluid pressure. Always use the lowest air pressure necessary to get the desired results. Higher pressures waste fluid and cause pre- mature wear of the pump packings and spray tip.
WARNING
To reduce the risk of overpressurizing your system, which could result in component rupture and cause serious bodily injury, NEVER exceed the maximum incoming air pressure given on your pump or in the Technical Data on pages
Keep the packing
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 (B), which shuts off the air supply to the pump if the pump accelerates beyond the
Shutdown and Care of the Pump
For overnight shutdown, follow the Pressure Relief Procedure on page 8. Always stop the pump at the bottom of the stroke to prevent the fluid from drying on the exposed displacement rod and damaging the throat packings.
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