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OPERATION

Priming the Pump

NOTICE:

To properly prime the pump, install a pipe tee in

the discharge piping (see Figure 1, Page 4).
To prevent damage to internal parts, do not start motor until
pump has been filled with water.
To prime pump:
1.

Remove priming plug (Purchase separately; Figure 1,
Page 4).

2.

Fill pump with water.

3.

Replace priming plug, using Teflon tape or Plasto-Joint
Stik

2

on plug threads; tighten plug.

4.

Start the pump. Water should be pumped in 1-2 minutes.
If not, repeat steps 1, 2 and 3.
On shallow depths to water (10 feet or less), the pump

will probably prime the first time after the following
steps 1 through 4 above.
From 10 to 20 foot depths, you might have to shut off
the pump and repeat steps 1, 2 and 3 several times.

5.

If, after priming pump several times, no water is
pumped, check the following:
A. Be sure suction pipe is in the water.
B. Be sure suction pipe does not leak.
C. Be sure that pump is not trying to lift water too high

(see “Piping in the Well”, Page 4).

D. As long as foot valve and check valve function cor-

rectly and suction pipe does not develop leaks, pump
should not need repriming in normal service.

2

Lake Chemical Co., Chicago, Illinois

MAINTENANCE

Lubrication

It is not necessary to lubricate the pump or its motor. The
motor bearings are lubricated for life. The mechanical shaft
seal in the pump is water lubricated and self-adjusting.

Draining for Winter

Risk of electric shock. Disconnect power

before working on unit.

Pump should be drained whenever it is disconnected from
service or is in danger of freezing.
1.

DISCONNECT POWER.

2.

Open faucet and relieve all pressure on system before
proceeding.

3.

Disconnect pressure switch tube (Key No. 17, Page 12)
at barbed elbow on pressure switch (Key No. 28) and
allow tube to drain.

4.

Open draincock (Key No. 22, Page 12) on pump body
and allow pump to drain.

5.

Remove priming plug to vent pump; disconnect hose
(Key No. 6, Page 14) at tank end and drain pressure tank
and all piping to a point below the frost line.

6.

Be sure to drain any piping that may be cut off from nor-
mal system drain due to check valve installation.

Vinyl Bag Removal

Be sure ALL air pressure has been re-

leased from tank before removing nuts from flange.
Failure to do this may result in serious or fatal injury.
Do not attempt to open tank unless all pressure has
been relieved!

Risk of electric shock. Disconnect power

before working on unit.

1. DISCONNECT POWER TO PUMP.
2. Drain system as follows:

A. Open faucet closest to tank.
B. Open draincock (Key No. 22, Page 12) on pump

body.

C. Remove hose (Key No. 6, Page 14) from tank elbow.

3. Relieve (expel) ALL air pressure in system by removing

valve core.

4. Disconnect outside piping from tank and pump.

To avoid serious or fatal injury, be

sure all air pressure has been released from tank
before proceeding to step 5.

5. Remove nuts and washers from tank inlet flange (Key

No. 2, Page 14). Tap inlet flange to break seal. Remove
flange.

6. Wherever convenient, hold bag with pliers and cut with

single-edge razor blade or sharp knife. Bag will not come
out in one piece. Continue pulling and cutting until bag
is removed.

7. Clean and dry inside of tank.
8. Place replacement bag on a clean surface with opening

up. Flatten bag and force air out.

9. Tightly roll bag towards center opening.

10. Before center opening is covered up, force air out of re-

maining portion of bag. Finish rolling bag.

11. To make bag easier to insert into tank, sprinkle outside

of bag with talcum powder.

12. Being careful not to break valve, stand tank on end. Push

tightly rolled bag into tank.

13. Reach into bag and push out sidewalls. You need not

remove all wrinkles.

14. Clean center opening ring on bag and lip on tank.
15. Pull ring on bag through tank opening and fit over tank

lip. BE SURE it seats properly in groove on tank lip.

16. Clean sealing surface of inlet flange and place on studs.
17.

NOTICE:

Tighten nuts as follows:

A. Hand tighten all nuts.
B. Tighten one nut snug.
C. Tighten opposite nut snug.
D. Proceed, tightening opposite pairs to a snug fit.
E. Recheck all nuts, using same pattern. Be sure all nuts

are tight and you have a good seal.

7

Содержание CRAFTSMAN 390.252157

Страница 1: ...tructions Before First Use of This Product Save This Manual For Future Reference Sears Roebuck and Co Hoffman Estates IL 60179 U S A Safety Instructions Installation Electrical Maintenance Repair Part...

Страница 2: ...covered while installing pump to prevent leaves and other debris from falling into well con taminating well and possibly damaging pump 4 Protect pump and piping system from freezing Allowing pump or w...

Страница 3: ...into the pump Pre Charged Tank The tank serves two functions It provides a reservoir of water under pressure and maintains a cushion of air pres sure to prevent pipe hammering and possible damage to p...

Страница 4: ...ould pump water would therefore be 15 feet PUMP TANK INSTALLATION Pump NOTICE Use Teflon tape supplied with the pump or Plasto Joint Stik1 for making all pipe thread connections to the pump itself To...

Страница 5: ...stream does not become steady air may be leaking into the system check for leaks in the piping on the suction side of the pump NOTICE To prevent waterlogging check tank air charge annually To Check Ta...

Страница 6: ...re 4 Motor wiring connections through Pressure Switch Match motor voltage to line voltage Your Motor Terminal Board under the motor end cover and Pressure Switch look like one of those shown below Con...

Страница 7: ...ping to a point below the frost line 6 Be sure to drain any piping that may be cut off from nor mal system drain due to check valve installation Vinyl Bag Removal Be sure ALL air pressure has been re...

Страница 8: ...connect power B Drain pump by opening drain cock Remove pressure switch tubing from fitting on top of pump To avoid serious injury release all pressure from system before attempting to remove clamp fr...

Страница 9: ...s will automatically locate seal in place See Figure 8 J Remount diffuser on seal plate Cleaning Impeller 1 Follow steps 1A through 1E under Disassembly and Assembly of Pump on Page 8 2 Remove diffuse...

Страница 10: ...water is to suspend a pipe closed at the bottom and open at the top surrounding the suction pipe Since the gases rise in the well casing the water sucked down through the pipe and into the suction pip...

Страница 11: ...causing excess friction new steel pipe above 3 Offset piping is too small in size 3 Use larger offset piping Pump pumps water 1 Pressure switch is out of adjustment 1 Adjust or replace pressure switc...

Страница 12: ...21 22 23 25 26 26A 27 28 29 30 587 1193 24 Pump Only Model 390 252157 To Order Parts in the U S A Call Sears Product Service 1 800 366 7278 To Order Parts outside the U S A Call Your local Sears Servi...

Страница 13: ...Venturi 13 N34P 19 Nozzle 14 N76 29P Insert 15 J20 18 Gasket 16 N176 28PB Tank Body Assembly Front Half Includes Key No s 11 12 13 14 15 16 19 20 21 23 and 24 16 N76 28P Tank Body Only Front Half 17...

Страница 14: ...57 Key 1 2 HP Qty No Part Number Used Description 1 29135 1 Tank Assembly Includes Diaphragm Elbow Valve Nuts Washers Inlet Flange U20 13 1 Bag Vinyl U212 160 1 Air Valve w Cap 2 U31 350P 1 Inlet Flan...

Страница 15: ...15...

Страница 16: ...bout an existing Agreement call 9 am 5 pm Monday Saturday 1 800 827 6655 M A I N T E N A N C E A G R E E M E N T America s Repair Specialists REPAIRSERVICES America s Repair Specialists REPAIRSERVICES...

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