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HELPFUL HINTS - TROUBLES, CAUSES & REMEDIES
Trouble Remedies
Fuses blow or
overload protector
trips when motor
starts.
Motor will not start but
does not blow fuses.
I _.WARNING ]
Hazardous voltage.
Can shock, bum,
or cause death.
Only competent electri-
cians should work on
elect dcal service.
Pressure switch fails
to shut off pump.
Fuses blow or
overload protector
trips when motor
is running.
Causes
A. Fuses or wires too small.
B. Low or high voltage.
C. Motor stuck or binding (abrasive
matenal, such as sand, may lock
pump),
D. Cable splices or motor windings
grounded, shortened, or open.
E. 3-Wire only: Cable leads may be improp-
erly connected in control center.
F. 3-Wire only: There may be a
broken wire in the control center,
G. 3-Wire only: Starting or running
capacitor in control center may be
defective or vented (blown out).
A. No voltage to motor.
B. Cable splices or motor windings may be
grounded, shorted, or open-circuited.
C. Open circuit in controi center (3*wire
only); faulty connections; faulty wires.
D. Faulty pressure switch.
E. 3-Wire only: Cable leads improperly
connected in control center.
A. Voltage too low; motor will run slowly,
causing low discharge pressure (head)
and high operating current draw.
B. Faulty pressure switch.
C. Imbellers or diffusers worn (due to
sand or abrasives in water or running
pump while it is air- or gas-locked) to
the point that pump does not develop
sufficient pressure to activate switch.
D. Drop pipe leaking.
E. Water levelinwetlmay becometoo
low whenpumpis running.
A. Low or high voltage.
B. 3-Wire only: High ambient
(atmospheric) temperature.
C. 3-Wire only: Control Center wrong
horsepower or voltage for installation.
D. Wire size too small, improperly
connected in control center.
E. Cable splices or motor windings
may be grounded, shorted or
open-circuited.
A. Replace with correct sizes (see Table II, Page 3).
B. While motor is running, voltage should not exceed plus 10% or minus 5%
of rated voltage shown on motor nameplate. Call electdc power company
to adjust line voltage if it is net within these limits.
C, Pull pump and clean it. Before reinstalling pump, clean well carefully (see Page 10)
for well development procedure), If necessary, clean well carefully with sand
pump or by bailing.
NOTICE: If well is sandy or dirty and cannot be cleaned or a suitable sand
screen installed, do not reinstall pump.
D. Consult competent electdcian or service technician.
E. Check wiring diagram on control center panel (also see Figures 4 and 5,
Page 6, in this manual) and color coding of drop cable.
F. Have a competent electrician examine all connections and widng
in control panel. If necessary, repair them.
G. Inspect capacitors (see Figures 4 and 5, Page 6). Have competent
electdctan check capacitors. Replace if necessary.
[A WARNING I Hazardous voltage. Can shock, burn, or cause death.
Capacitors may still carry voltage charges even after being disconnected
from wiring, Have them checked by a competent electrician.
A. With voltmeter check 1) fuse box to make sure full voltage is available; 2) pressure
switch terminals, to make sure pressure switch is passing voltage correctly;
and 3) terminal strips in control center or disconnect switch box to make sure
voltage is available there. 1-1/2 through 3 HP: Push red overload reset button(s)
on bottom of control center.
B. Consult competent electdcian or service technician.
Do not attempt to disassemble pump or motor.
C. Examine all connections and wires; examine terminal stdps in
control center (3-wtte only); repair if necessary.
D. Check pressure switch; replace if necessary,
E. Check wiring diagram on control center panel (also see Figures 4 and 5,
Page 6, in this manual) and color coding of drop cable.
A. Have a competent electrician verify voltage at electrical disconnect box (2-wire) or
control center (3-wire) while pump is operating. If voltage is low, power company may
need to raise it or installation may require larger wire. Discuss with power company
or licensed electrician. Check voltage with a recording meter if trouble reoccurs.
B. Replace switch.
C. Adjust switch to allow for reduced pressure coming from pump. If
adiustment does not solve problem, it may be necessary to replace
pump. If well water contains enough sand to cause undue wear on
the pump, clean out well or install a suitable sand screen before
reinstalling pump. See "Well Development", Page 10.
D. Raise one length of pipe at a time until leak is found. When water
stands in pipe, there is no leak below that point.
E. Lower pump further into well, but make sure it is at least five feet above well bottom.
Install a valve in discharge pipe between pump and pressure tank, Use valve to
restrict flow until discharge rate does not exceed well recovery rate.
_To prevent possibility of dangerous high pressure, install a
relief valve in discharge pipe between pump and flow restriction valve.
Relief valve must be capable of passing full pump flow at 75 PSI.
A. While motor is running, voltage should not exceed plus 10% or minus 5% of rated
voltage shown on motor nameplate. Call Power company to adjust line voltage
if it is not within these limits.
B. Make sure control center is installed out of direct sunlight.
C, Compare horsepower and voltage rating of motor (from motor nameplate) with those
of control center (from control center nameplate). These numbers must match.
D. See Table II, Page 3, and make sure wire size matches
specifications in table.
E. Consult competent electdcian or service technician to determine
ifthis is the cause of the problem or not.
Do not attempt to disassemble pump or motor.
12
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