Operation / Troubleshooting 4
For parts or assistance, call Master Plumber Pump Customer Service at 1-800-628-9439
TROUBLESHOOTING
Risk of electrical shock and sudden start.
Disconnect electrical power to pump before attempting to troubleshoot or work on it.
SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Pump won’t Blown fuse If blown, replace with fuse of proper size
start or run
Low line voltage If voltage under recommended minimum, check size of wiring
from main switch on property. If OK, contact power company.
Defective motor Replace pump
Impeller Remove screen, locate source of binding
Pump operates Low line voltage Use only 14 gauge or larger extension cords. Use short extension cords
but delivers little when necessary
or no water
Something caught in impeller Clean out impeller
Small diameter garden hose Use larger diameter garden hose or 1" flexible pipe. Eliminate any
or long discharge line excess hose. Short hoses work best
Check valve installed without Drill a 1/16" - 1/8" (1.6 - 3.2 mm) dia. hole between pump
vent hole discharge & check valve
Air lock Turn off pump for a few seconds, clean out anti-airlock hole and restart pump
Coils or bends in hose Straighten hose and drain all water out of it.
AIRLOCKS
When a pump airlocks, it runs but does not move any
water. An airlock will cause the pump to overheat and fail.
This pump has an anti-airlock hole in the bottom of the
pump body. If you suspect an airlock, unplug the pump,
clean out the anti-airlock hole with a paper clip or piece of
wire, and restart the pump.
NOTICE: If the outlet of the discharge hose/pipe is
submerged you must have a 1/8
"
hole in the discharge hose/
pipe to prevent airlock. This hole must be open to air.
NOTICE: If you move the pump or if the pump airlocks, be
sure to drain the hose before trying to restart the pump.
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