Craftsman 390.2532 Manuel du propriétaire télécharger pdf (Page 10)

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

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 19 20

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Craftsman 390.2532 Manuel du propriétaire Page 10

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