All Pumps
To reduce the risk of fluid injection, do not use your hand or fingers to cover the bleed hole on the under- side of the bleed valve body (N) when priming the pump. Use the handle or a crescent wrench to open and close the bleed plug. Keep your hands away from the bleed hole.
If the pump fails to prime properly, open the pump bleed valve (N) slightly. See FIG. 6. Use the bleed hole, on the underside of the valve, as a priming valve until the fluid appears at the hole. Close the plug.
NOTE: Always use lowest possible fluid pressure to bleed air out of pump.
N
ti14668a
FIG. 6. Pump Bleed Valve
NOTICE
Do not allow the pump to run dry. It will quickly accel- erate to a high speed, causing damage. If your pump is running too fast, stop it immediately and check the fluid supply. If the container is empty and air has been pumped into the lines, refill the container and prime the pump and the lines, or flush and leave it filled with a compatible solvent. Eliminate all air from the fluid system.
Shutdown
NOTE: When changing fluid containers with the hose and valve already primed, open the pump bleed valve (N), to help prime the pump and vent air before it enters the hose. Close the valve when all air is eliminated.
With the pump and lines primed, and with adequate input pressure and volume supplied, the pump will start and stop as you open and close the valve. In a circulat- ing system, the pump will speed up or slow down on demand until it is shut off.
Shutdown
NOTICE
Never leave water or
1.Stop the pump at the bottom of the stroke to prevent fluid from drying on the exposed displacement rod and damaging the throat packings.
2.Follow Pressure Relief Procedure, page 13.
3.Always flush the pump before the fluid dries on the displacement rod. See Prime/Flush on page 13.
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