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10
PROBLEM CHECK CORRECTIVE ACTION
Motor will not start but
fuses do not blow
No voltage. No voltage at fuse box. Replace blown fuses.
No voltage at pressure switch. Replace faulty pressure switch.
No voltage at control box. Rewire supply to control box.
Cable or splices bad. Consult licensed electrician or serviceman.
Control box incorrectly wired. Reconnect control box correctly (see wiring
diagrams, Pages 6 through 8).
Fuses blow or overload
protector trips when
motor starts
Wrong size fuse or wrong Check fuse size against Tables II and III, Install correct fuse or time delay fuse.
size time delay fuse. Pages 3 and 4.
Wire size too small. Check wire size against Table III, Page 4. Install correct size wire.
Starting capacitor Check control box to see if starting Replace starting capacitor.
defective or blown. capacitor has blown out.
Low or high voltage. Check that line voltage is within ±10% of If voltage variation is greater than ±10%, call
nameplate rated voltage while motor is power company to adjust voltage.
running.
Cable leads not correctly Check control box wiring diagram Reconnect leads to match wiring diagram in
connected to control box. against incoming power hookup. control box cover.
Check drop cable color coding. Reconnect drop cable so cable color code
matches motor lead color code.
Broken wire in control Examine all connections and wiring in Disconnect power and repair or replace faulty
box. control box. wire.
Pump or motor stuck or Check for locked rotor in pump. If necessary, pull pump (make all possible
binding. above ground checks first). If pump is locked,
replace it. Clean well of all sand or lime before
reinstalling pump.
Fuses blow or overload
protector trips when
motor is running
Low or high voltage. Check that line voltage is within ±10% of If voltage variation is more than ±10%, call
rated nameplate voltage while motor is power company to adjust voltage.
running.
High ambient Check temperature of control box. Do not mount control box in direct sunlight.
(atmospheric temperature).
Control box with wrong Compare voltage and horsepower on Replace control box if numbers do not match.
voltage or horsepower motor nameplate with those given on
rating. control box nameplate or on circuit
diagram inside control box cover.
Wire size too small. Check wire size against Table III, Page 4. Install correct wire size.
Cable splices or motor Consult licensed electrician or qualified Do not attempt to disassemble pump or motor.
leads grounded, shorted, serviceman.
or open.
Pump starts too
frequently
Leaks in system. Check all tank connections with System must be air and water tight.
soapsuds for air leaks. Check plumbing
for leaks.
Pressure switch. Check for defective switch or switch out Re-adjust or replace pressure switch.
of adjustment.
Tank waterlogged. Pre-charged tanks; check tank pre- Pre-charge tanks: adjust air pressure to 2 PSI
charge air pressure, check for leak in (13.8 kPa) less than pump cut-in pressure (when
bladder. there is no water pressure on system).
Replace bladder if necessary.
Air over water tanks: check for air leaks. Air over water tanks: repair or replace tanks;
Check Air Volume Control (AVC). replace snifter valves if necessary.
Check snifter valve operation.
Leak in drop pipe. Raise drop pipe one length at a time Replace pipe above that point.
until water stands in pipe.
Pressure switch too far Measure distance from pressure switch Move switch to within one foot of tank.
from tank. to tank.
TROUBLESHOOTING GUIDE
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