Hitachi SERIES F - Manual (Page 5)

308-043 5
Setup/Operation
General Information
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and the
parts drawing.
NOTE: Always use Genuine Graco Parts and Acces-
sories, available from your Graco distributor.
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section
FIRE OR EXPLOSION HAZ-
ARD on page 4.
1. Pump: Ground the complete pump as indicated in
your separate pump instruction manual.
2. Air hoses: use only electrically conductive air
hoses
3. Fluid hoses: use only electrically conductive fluid
hoses.
4. Air compressor or hydraulic power supply: follow
manufacturer’s recommendations.
5. Spray gun or dispensing valve: ground through
connection to a properly grounded fluid hose and
pump.
6. Fluid supply container: follow your local code.
7. Object being sprayed: follow your local code.
8. Solvent pails used when flushing: follow your local
code. Use only metal pails, which are conductive,
placed on a grounded surface. Do not place the
pail on a nonconductive surface, such as paper or
cardboard, which interrupts the grounding continu-
ity.
9. To maintain grounding continuity when flushing or
relieving pressure, hold a metal part of the spray
gun firmly to the side of a grounded
metal pail,
then trigger the gun.
Operation
Pressure Relief Procedure
WARNING
INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected through the
skin and cause serious injury. To reduce the risk of
an injury from injection, splashing fluid, or moving
parts, follow the
Pressure Relief Procedure
whenever you:
D are instructed to relieve the pressure,
D stop spraying/dispensing,
D check or service any of the system equipment,
D or install or clean the spray tips/nozzles.
1. Lock the spray gun/dispensing valve safety latch.
2. Shut off the air or hydraulic supply to the pump.
3. In air-powered systems, close the bleed-type
master air valve (required in your system). In
hydraulic-powered systems, close the hydraulic
supply line valve first, then the return line valve.
4. Unlock the gun/valve trigger safety.
5. Hold a metal part of the gun/valve firmly to the side
of a grounded metal pail, and trigger the gun/valve
to relieve pressure.
6. Lock the gun/valve trigger safety latch.
7. Open the drain valve (required in your system),
having a container ready to catch the drainage.
8. Leave the drain valve open until you are ready to
spray/dispense again.
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
tip guard retaining nut or hose end coupling and relieve
pressure gradually, then loosen completely. Now clear
the tip or hose.