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SYMPTOM

POSSIBLE CAUSE(S)

CORRECTIVE ACTION

Motor will not run

Disconnect switch is off

Be sure switch is on.

Fuse is blown or circuit breaker tripped

Replace fuse or reset circuit breaker.

Starting switch is defective

DISCONNECT POWER; Replace starting switch.

Wires at motor are loose, Refer 

to instructions on wiring (Pages 7 and 8). DISCONNECT POWER; 

disconnected, or wired incorrectly 

check and tighten all wiring. 

Capacitor voltage may be hazardous. To discharge 

capacitor, hold insulated handle screwdriver BY THE HANDLE and 
short capacitor terminals together. Do not touch metal screwdriver 
blade or capacitor terminals. If in doubt, consult a qualified electrician.

Pressure switch contacts are dirty

DISCONNECT POWER and file contacts with emery board or nail file.

Motor runs hot and 

Motor is wired incorrectly

Refer to instructions on wiring.

overload kicks off

Voltage is too low

Check with power company. Install heavier wiring if wire size is too small  
(See Electrical / Wiring Chart).

Pump cycles too frequently

See section below on too frequent cycling.

Motor runs but no 

Pump in new installation did 

In new installation:

water is delivered*

not pick up prime through: 

1. Improper priming 

1. Re-prime according to instructions.

2. Air leaks

2. Check all connections on suction line, AVC, and ejector with

soapy water or shaving cream.

3. Leaking foot valve or check valve

3. Replace foot valve or check valve.

Pump has lost prime through:

In installation already in use:

1. Air leaks

1. Check all connections on suction line and shaft seal.

2. Water level below suction pipe inlet

2. Lower suction line into water and re-prime. If receding water level 

in well exceeds 25’ (7.6M), a deep well pump is needed.

Foot valve or strainer is plugged

Clean foot valve or strainer.

Ejector or impeller is plugged

Clean ejector or impeller.

Check valve or foot valve is stuck shut 

Replace check valve or foot valve.

Pipes are frozen

Thaw pipes. Bury pipes below frost line. Heat pit or pump house.

Foot valve and/or strainer are 

Raise foot valve and/or strainer above bottom of water source.

buried in sand or mud

Clean foot valve and strainer.

Water level is too low for shallow well  

A deep well jet package may be needed (over 25 ft. to water) 

setup to deliver water

to deliver water.

Pump does not 

Water level in well is lower than 

A deep well jet will be needed if your well is more than 25’ (7.6M)

deliver water to full 

estimated

depth to water.

capacity

Steel piping (if used) is corroded or 

Replace with plastic pipe where possible, otherwise with new steel pipe.

limed, causing excess friction
Piping is too small in size

Use larger piping.

Packed well point

Backflush well point or sink new point.

Pump delivers water but

Pressure switch is out of adjustment or

DISCONNECT POWER; adjust or replace pressure switch.

does not shut off or

contacts are welded together

pump cycles too

Faucets have been left open

Close faucets.

frequently

Venturi, nozzle or impeller is clogged

Clean venturi, nozzle or impeller.

Standard pressure tank is waterlogged

Drain tank to air volume control port. Check AVC for defects. Check 

and has no air cushion

all connections for air leaks.

Pipes leak

Check connections.

Foot valves leak

Replace foot valve.

Air charge too low in pre-charged tank

DISCONNECT POWER and open faucets until all pressure is relieved.
Using tire pressure gauge, check air pressure in tank at valve stem 
located on the tank. If less than pressure switch cut-in setting (30-50 
PSI), pump air into tank from outside source until air pressure is 2 PSI 
less than cut-in setting of switch. Check air valve for leaks (use soapy
solution) and replace core if necessary.

Air spurts from faucets

Pump is picking up prime

When pump has picked up prime, it should pump solid water with no air.

Leak in suction side of pump

Suction pipe is sucking air. Check joints for leaks with soapy water.

Well is gaseous

Consult factory about installing a sleeve in the well

Intermittent over-pumping of well.

Lower foot valve if possible, otherwise restrict pump discharge

(Water drawn down below foot valve.)

Troubleshooting

10

* (Note: 

Stop pump;

then check prime
before looking for
other causes.
Unscrew priming
plug and see if water
is in priming hole).

Содержание ABFNC 1/2HP

Страница 1: ...UAL Shallow Well Jet Pumps Tank Systems Installation Operation Parts MOORE HANDLEY INC P O Box 2607 Birmingham AL 35202 EVERY ARTICLE MERICA S BES A T TRADE MARK REG P ERFE C T PRINTED IN U S A AB312...

Страница 2: ...ouch an operating motor Modern motors are designed to operate at high temperatures To avoid burns when servicing pump allow it to cool for 20 minutes after shut down before handling Do not allow pump...

Страница 3: ...e General Safety 2 Installation 4 5 Connecting Discharge Piping 6 Electrical 7 8 Preparing To Start The Pump 9 Troubleshooting 10 Repair Parts 11 Warranty 12 Model Disch GPH at depth to water HP PSI 5...

Страница 4: ...s large as the suction port on the pump include a check valve if your pump is not equipped with one see Figure 1 Support the pipe so that there are no dips or sags in the pipe so it doesn t strain the...

Страница 5: ...pipe The suction pipe should be at least as large as the suction port on the pump Step 2 Assemble a foot valve and suction pipe see Figure 3 Make sure that the foot valve works freely Use teflon tape...

Страница 6: ...ize must be at least as large as the discharge port Step 3 Remove the 1 8 NPT pipe plug from the pump Air Volume Control AVC port see Figure 5 Run tubing from the pump s AVC port see Figure 5 to the p...

Страница 7: ...oltage must be within 10 of nameplate voltage Incorrect voltage can cause fire or seriously damage motor and voids warranty If in doubt consult a licensed electrician Use wire size including ground wi...

Страница 8: ...wires carrying power to the motor Step 4 Replace the pressure switch cover You have just completed the wiring for your pump Please go to Page 9 for startup preparations About Grounding Grounding an e...

Страница 9: ...r after 2 or 3 min utes stop the pump and remove the fill plugs Refill the pump and piping You may have to repeat this several times in order to get all the trapped air out of the piping A pump liftin...

Страница 10: ...are Raise foot valve and or strainer above bottom of water source buried in sand or mud Clean foot valve and strainer Water level is too low for shallow well A deep well jet package may be needed ove...

Страница 11: ...40P 7 Volute Diffuser 1 L1 25P 8 Gasket Diffuser 1 N20 34 9 Pump Body Assembly 1 N176 38 9A Venturi 1 N32P 66 9B Nozzle 1 N34P 17 43 10 Pipe Plug 1 4 NPT Sq Hd 2 U78 57CT 11 Pipe Plug 1 4 NPT Hex Hd 1...

Страница 12: ...with this warranty and to request warranty service through the installing dealer as soon as a problem is discovered If warranty service is requested more than 30 days after the Warranty Period has end...

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