Original Language Version
© Jack Sealey Limited
PROBLEM
POSSIBLE
CAUSES REMEDY
Engine will not start
Is engine oil level correct
Top-up oil to correct level
Engine switch not in the ON position
Turn switch ON
Pressure
build-up
in
pump
Operate
trigger
Engine is overloaded
Nozzle partially blocked
Clean nozzle
Excessive pressure build-up
Return to dealer to have reflux valve adjusted.
Engine running but pump not
Mains water turned off
Turn on mains water
building maximum pressure or has
irregular pressure
Unit has been stored in freezing temperatures
Thaw out completely including hose, gun and wand.
Inadequate water supply
Minimum required is 6L/min at 2 bar.
Water
inlet
filter
clogged
Clean
filter
Kink
in
water
supply
hose
Straighten
hose
Wand nozzle worn or damaged
Replace nozzle
Air in pump
Run unit with gun open and wand removed until air
is
purged
Suction or discharge valve clogged or worn out
Clean suction or discharge valves
Bypass valve not operating effectively
Clean bypass valve
No intake of chemicals
Injection tube not properly attached to unit
Push tube firmly onto siphon nozzle
Tube
cracked
or
split Replace
tubing
Nozzle set to high pressure
Move nozzle to low pressure position
Siphon nozzle blocked
Clean nozzle
Trigger will not move
Trigger lock engaged
Release trigger lock
Water in crankcase
High humidity
Change oil more frequently
Noisy operation
Worn seals
Return to Sealey stockist for seal replacement
Worn bearings
Return to Sealey stockist for bearing replacement
R
ough/pulsating operation with
Air mixed with water
Check inlet line for correct size or restriction
pressure drop
Inlet restriction
Check for incorrectly sized plumbing, air leaks, or
blockages
Air mixed with water
Check inlet line for correct size or restriction
High crankcase temperature
Wrong grade of oil
Use recommended oil
Oil
too
high/low
Adjust
oil
level
to
recommended.
8. TROUBLESHOOTING
PWM1300.V2 Issue 2 (2) 07/12/20
