Operation; Priming The Pump - Craftsman 390.2532 Owner's Manual

OPERATION
Priming The Pump
I&WARNING ]Burn hazard. NEVER run pump dry.
Running pump without water may cause pump
to overheat, damaging seal and possibly causing
burns to persons handling pump. Fill pump with
water before starting.
IAWARNING]Risk
of explosion and steam burns.
NEVER run pump with discharge shut off, which
can boil water inside pump body. Steam in pump
may cause it to explode and scald anyone near.
NOTICE: Open water system faucets before priming
pump for the first time.
1. Remove pressure gauge.
a. Close regulator valve (turn clockwise - see Figure
]8A).
b. Fill pump and suction pipe with water (Figure
lSB).
c. Replace pressure gauge, using Teflon tape on
thread; tighten gauge.
NOTICE: If a priming tee and plug have been installed
for a long horizontal rim, be sure to fill suction pipe
through this tee and replace plug. (Don't forget to
teflon tape the plug.)
2. Start Pinup:
Pressure should increase rapidly to 50 pounds per
square inch or more as ejector and pump prime. If
so, go to step 4, below.
lf pressure does not build to 50PSI, repeat steps a,
b, and c under Step No.1 two or three times to re-
move entrapped air from the suction pipes.
3. If pressure does not build up after priming pump
several times, check the following:
a. Suction pipe in the water.
b. Suction pipe has no leaks.
NOTICE: Air can leak in even where water won't leak
out. Make sure all joints are tight.
c. Control valve, check valve, or foot valve installed
and operating correctly.
d. Pump trying to lift water more than rated lift for
deep well ejector used (including compensation
for horizontal offset).
e. Be sure pump is not airlocked. In offset install-
ations, pump suction port should be highest
point in suction pipe; there should be no sags in
suction pipe (run it straight and at a slight angle
upward from well head to pump).
A - Close Regulator I
2360a 0697
B - Fill Pump With Water l_ C - Start Pump i
Figure 18 - Priming Pump
1030a 0697
D - Adjust Regulator
10