Troubleshooting Guide - Excell PWZ0142700.01 Guide D'utilisation

TROUBLESHOOTING GUIDE

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Problem
Engine will not start (see En-
gine Manual for further engine
troubleshooting)
No or low pressure (initial use)
Will not draw chemicals
No or low pressure (after period
of normal use)
Water leaking at gun/spray
wand connection
Water leaking at pump
Pump Pulsates
AWSC= Authorized Warranty Service Center
Copyright © 2011 MAT Industries, LLC
Cause
1� No fuel
2� Pressure builds up after two pulls on the
recoil starter or after initial use�
3. Choke lever in the "No Choke" position.
4� Spark plug wire not attached�
5� Engine ON/OFF switch in OFF position�
6. Choke lever in the "Choke" position on
a "hot" engine or an engine that has been
exposed to thermal heat for a long period of
time�
1� High pressure nozzle is not installed�
2� Low water supply�
3. Leak at high pressure hose fitting.
4� Nozzle obstructed�
5. Water filter screen clogged.
6� Air in hose�
7. Choke lever in the "Choke" position.
8� High pressure hose is too long�
1� Low pressure soap nozzle not installed�
2. Chemical filter clogged.
3� Chemical screen not in cleaning solution�
4� Chemical too thick�
5� Pressure hose too long�
6� Chemical build up in chemical injector�
1� Worn seal or packing�
2� Worn or obstructed valves�
3� Warn unloaded piston�
1� Worn or broken O-ring�
2� Loose hose connection�
1� Loose connections�
2� Piston packing worn�
3� Worn or broken O-rings�
4� Pump head or tubes damaged from freezing�
1� Nozzle obstructed�
Correction
1� Add fuel�
2� Squeeze gun trigger to relieve pressure�
3. Move choke to the "Choke" position.
4� Attach spark plug wire�
5� Place engine ON/OFF switch in ON position�
6. Move choke to the "No Choke" position.
1� See How to Use Spray Wand instructions in the
Operation Section�
2� Water supply must be at least 5 GPM @ 20 PSI�
3� Repair leak� Apply sealant tape if necessary�
4� See Nozzle Cleaning instructions in the Mainte-
nance section�
5. Remove and clean filter.
6� Turn off the engine, then the water source�
Disconnect the water source from the pump inlet
and turn the water source on to remove all air
from hose� When there is a steady stream of water
present, turn water source off� Re-connect water
source to pump inlet and turn on water source�
Squeeze trigger to remove remaining water�
7. Move choke to the "No Choke" position.
8� Use high pressure hose under 100 feet�
1� See How to Use Spray Wand paragraph in the
Operation Section�
2. Clean filter.
3� Make sure end of chemical hose is fully sub-
merged into cleaning solution�
4� Dilute chemical� Chemical should be in the
same consistency as water�
5� Lengthen water supply hose instead of high
pressure hose�
6� Have parts cleaned or replaced by AWSC�
1� Have replaced by AWSC�
2� Have replaced by AWSC�
3� Have replaced by AWSC�
1� Check and replace�
2� Tighten�
1� Tighten�
2� Have replaced by AWSC�
3� Have replaced by AWSC�
4� Have replaced by AWSC�
1� See Nozzle Cleaning paragraph in the Mainte-
nance section for the correct procedure�
14 - ENG M100135