Hitachi 220-856 - Manual (Page 7)

307-830 7
Startup
Use this procedure to help you start and operate the
sprayer properly and safely.
WARNING
INJECTION HAZARD
To reduce the risk of serious bodily
injury, follow the Pressure Relief Proce-
dure Warning on page 11 before check-
ing or repairing any part of the spray system.
NOTE: Flush the sprayer if this is a first-time startup.
See page 9.
NOTE: See Fig. 3 except where noted.
1. Turn the pressure adjusting knob (A) fully
counterclockwise to minimum pressure.
2. Put the intake tube (3) in the fluid container.
3. Plug in the sprayer.
CAUTION
Do not run the pump without fluid in it for more than
30 seconds to avoid damage to the displacement
pump packings.
WARNING
FIRE AND EXPLOSION HAZARD
To reduce the risk of static sparking and
splashing when flushing, always remove
the spray tip from the gun and hold a
metal part of the gun firmly to the side of grounded
metal pail.
4. Prime the pump.
a. Open the pressure drain valve (44). Turn on the
sprayer switch (105a). Slowly turn the pressure
adjusting knob (A) clockwise until the sprayer
starts. When fluid comes from the valve close it.
b. Disengage the trigger safety latch. See Fig. 2.
Holding a metal part of the gun firmly against a
grounded metal pail, trigger the gun until all air
is forced out of the system and the paint flows
freely from the gun.
c. Release the trigger and engage the trigger
safety latch.
5. Check all fluid connections for leaks. Follow
the Pressure Relief Procedure on page 11 before
tightening connections.
6. Install the spray tip and tip guard. Engage the
trigger safety latch. Install the spray tip according
to the instructions supplied with it.
7. Adjust the spray pattern.
a. Increase the pressure slowly just until spray
from the gun is completely atomized. Use the
lowest pressure needed to get the desired
results. This reduces overspray and fogging,
decreases tip wear and extends sprayer life.
b. If more coverage is needed, use a larger tip
rather than increasing the pressure.
c. Test the spray pattern. Adjust the spray tip
pattern according to the instructions supplied
with the gun or tip.
Fig. 2
1
2
Trigger safety latch shown engaged (SAFE)
Trigger safety latch shown disengaged (OFF SAFE)
1 2
01745C Fig. 3
105a
A
44
3