21
Pump is noisy.
Pump is sucking air.
Check that hoses and
machine and purge
pump by squeezing trigger
water emerges through the
nozzle.
rinse in warm water.
Water leaks from pump
(up to 10 drops per min-
ute is permissible).
tight.
Water seals are damaged
or worn.
Call the Toll-Free Hotline.
Oil is dripping.
Oil seals are damaged or
worn.
Call the Toll-Free Hotline.
Motor buzzes but fails to
run.
Supply voltage below
minimum.
Verify that only the pres-
sure washer is running on
this circuit.
System has residual pres-
sure.
Turn unit OFF, squeeze
trigger on spray wand to
release pressure, then turn
unit ON.
Voltage loss due to exten-
sion cord.
Unplug any extension
cords attached and plug
the unit directly into the
outlet.
Motor buzzes but fails to
run. (continued)
Pressure washer not used
for long periods.
Call the Toll-Free Hotline.
Residual friction among
components. Unit might
hum.
Disconnect water supply
and power ON for 2 to 3
seconds, repeat couple
times or until the motor
starts.
No water.
Water supply is OFF.
Turn ON water supply.
Kink in the garden hose.
Remove kink in garden
hose.
If you have any questions, visit www.rugdoctor.com or call 1-800-784-3628.
Sumec Owner Manual.pdf 1 4/29/19 11:45 AM
PWSU-1 User Guide.pdf 1 4/30/19 3:51 PM