4
PROBLEM
CHECK
CORRECTIVE ACTION
Pump will not start but fuses do not blow
No voltage.
No voltage at control panel.
Replace blown fuses or bad cable.
Electrical cable bad.
Consult licensed electrician or serviceman.
Control panel incorrectly wired.
Reconnect control panel correctly.
Fuses blow or overload protector trips when motor starts
Wrong size fuse or wrong
Check fuse size against chart, above.
Install correct fuse or time delay fuse.
size time delay fuse.
Low or high voltage.
Check that line voltage is within ±10% of nameplate
If voltage variation is greater than ±10%, call power
rated voltage while motor is running.
company or local hydro authority to adjust voltage.
Power supply wire leads
Check control panel wiring diagram against incoming
Reconnect leads to match wiring diagram in control
not correctly connected
power hookup. Check power supply wire color coding.
panel cover. Reconnect power supply wires so wire
to control panel.
color code matches motor lead color code.
Broken wire in
Examine all connections and wiring in control panel.
Disconnect power and repair or replace faulty wire.
control panel.
Pump stuck or binding.
Check for locked shaft in pump.
If necessary, pull pump (make all possible above
ground checks first). If pump is locked, replace it.
Clean tank of all sand or lime, or solids before
reinstalling pump.
Power supply wires or
Consult licensed electrician or qualified serviceman.
Have a qualified serviceman or electrician make
pump leads grounded,
necessary cable repairs..
shorted, or open.
Fuses blow or overload protector trips when motor is running
Low or high voltage.
Check that line voltage is within ±10% of rated
If voltage variation is more than ±10%, call power
nameplate voltage while motor is running.
company to adjust voltage.
High ambient (atmospheric) Check temperature of tank
Protect tank from direct sunlight.
temperature.
Pump starts too frequently
Leaks in system.
Check plumbing for leaks.
Level switch.
Check for defective switch or switch out of adjustment.
Re-adjust or replace level switch.
Check valves leaking.
Make sure check valves are not leaking back.
Replace check valves if necessary.
Little or no water delivered
Check valve stuck
Examine valve.
If stuck, free valve; if installed backwards, reverse it.
or installed backwards
Low voltage.
Check voltage at control panel with pump running.
Install larger wire from meter to control panel.
If necessary, have power company raise supply voltage.
Plugged intake screen.
Pull pump and check condition of screen.
Clean or replace as necessary.
Check valve at pump
Pull pump and examine check valve.
Free check valve.
discharge stuck.
Pump doesn’t develop
Check pump curve against operating conditions.
Replace pump with “higher head” pump.
enough pressure (“head”).
TROUBLESHOOTING GUIDE
LIMITED WARRANTY
4” Submersible pumps are warranted against defects in material and workmanship for a period of 1 year
from the date of original installation, not to exceed 18 months from the date of manufacture, whichever
occurs first. In no event shall Zabel be liable for any consequential damages or any labor, material, freight
or expense required to replace, correct or reinstall the product. Zabel’s liability is limited to repair or
replacement of the part. All warranties are void if the product has been improperly modified, applied or
installed, subjected to misuse or abuse. Except as stated herein, there are no warranties express or
implied, including the warranty of merchantability or warranty of fitness for a specific purpose.
Zabel Environmental Technology
TM
• P.O. Box 1520 • Crestwood, KY 40014
