Porter-Cable PCH3740 - Manual (Page 12)

12- ENG A08058
HOW TO APPLY CHEMICALS
AND CLEANING SOLVENTS
Applying chemicals or cleaning
solvents is a low pressure operation.
NOTE: Use only soaps and chemicals
designed for pressure washer use. Do
not use bleach.
To Apply chemicals:
1. Press chemical
hose onto
barbed fitting
located near high
pressure hose
connection of
pump as shown.
2. Place other end of chemical
hose with filter on it into container
holding chemical/cleaning
solution. NOTE: For every 7
gallons of water pumped 1 gallon
of chemical/cleaning solution will
be used.
3. Install low pressure (black)
nozzle into quick connect fitting
of spray wand, see How To Use
Spray Wand paragraph in this
section.
4. After use of chemicals, place
chemical hose into container
of clean water and draw
clean water through chemical
injection system to rinse
system thoroughly. If chemicals
remain in the pump it could be
damaged. Pumps damaged due
to chemicals will not be covered
under warranty.
NOTE: Chemicals and soaps will not
siphon when spray wand is in the high
pressure setting.
CHANGING NOZZLES ON SPRAY
WAND
Risk of Flying
Object could
cause risk of serious injury. DO
NOT attempt to change nozzles
while pressure washer is running.
Turn engine off before changing
nozzles.
1. Pull quick
connect coupler
back and insert
nozzle.
2. Release quick
connect
coupler and twist nozzle to
make sure it is secure in coupler.
Risk of Flying
Object could
cause risk of serious injury. Ensure
nozzle is completely inserted in
QC socket, and QC snap ring is
fully engaged (forward) before
squeezing gun trigger.
Risk of injection or
injury to person.
Do not direct discharge stream
toward persons, unprotected
skin, eyes, or any pets or animals.
Serious injury can occur.
Barbed Fitting