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Model H7668 Spray Gun w/Pressure Cup -15-
SECTION 6: MAINTENANCE
Cleaning
Proper cleaning is the best way to ensure
trouble free performance from your spray
system. If your system is not thoroughly
cleaned, damage and poor spraying will
result. Problems caused by improper clean-
ing will not be covered by the warranty.
Clean the spray gun, hose and pressure
cup immediately after each use.
To clean your spray system:
1. Depressurize the cup by disconnecting
from the compressed air and bleed
the system by loosening (DO NOT
REMOVE) the pressure relief valve
until "zero" pressure is recorded on the
pressure cup gauge (see Figure 20).
EXPLOSION HAZARD! Chlorinated
Solvents like 1,1,1-Tricloroethane
and Methylene Chloride (methyl
chloride) can chemically react with
aluminum and may explode. Many
parts in spray guns and pressure
cups are made of aluminum. Read
your solvent label carefully before
using solvent.
EXPLOSION HAZARD! Do not
unscrew pressure cup lid while
under pressure! Exploding paint
material and solvents could cause
serious injury!
3. Clean pressure cup with solvent.
4. Add clean solvent to pressure cup,
replace the lid and repressurize.
5. Spray the gun until the fluid sprays
clear to clean the fluid hose.
Note: Check local laws regarding this
practice. If you are spraying on a regu-
lar basis, spraying solvents into the air
may be illegal. A closed system cleaner
may be required.
HEALTH & CONTAMINATION
HAZARD! Dispose of paint waste
in a responsible manner! Follow
manufacturer's recommendations
and local laws regarding disposal.
Failure to comply will result in con-
tamination and possibly large fines
and penalties.
2. Unscrew the cap and empty the pres-
sure cup contents into an approved
receptacle.
Figure 20. Pressure relief valve.
Pressure Relief Valve