Berkeley 6D, Owner'S Manual, Page: 4 / 8

4. When water flows freely from opening in top of primer,
pump should be primed.
5. Close shut-off valve (if used).
6. Start pump and open discharge valve slowly to allow
any air remaining in the pump case to escape.
7. If unit fails to prime, refer to trouble shooting guide at
right.
Trouble - Cause and Remedy
Water continues to flow from pump into primer after
priming is complete:
Primer check valve did not close.
To close, bring primer handle to mid-stroke. Give sharp
downward stroke.
Pump fails to prime:
Air leak.
Check all primer connections. Check all pump suction
connections. Check all pump discharge connections.
Insufficient water level in pump case.
Check primer connection to pump case. Piping must
be at or above centerline of impeller eye.
Pump loses initial prime:
Air trapped in suction piping.
Check for high spots in suction line, refer to centrifugal
pump owner’s manual for recommended/not recom-
mended suction connections.
Air leaking through packing.
Check packing lantern ring for sufficient grease to
prevent air from being drawn in during pressure drop.
Page 4 BE977
Full
Stroke
385 0893
FIGURE 6A – Start of priming cycle, pumping air
only
4-5"
Stroke
387 0893
FIGURE 6B – Finish of priming cycle, pumping
air/water mixture
3.50"
7/16"
DIA
1/2" NPT
FEMALE
389 0893
FIGURE 7 – Primer mounting dimensions