Hitachi AA 2000 - Manual (Page 7)

307-586 7
Operation
Safety
WARNING
INJECTION HAZARD
Remember, this is not an air spray gun.
For your safety be sure to read and
follow the Warnings on pages 2 and 3
and throughout the text of this instruction manual.
Keep the wallet sized warning card 179–960,
provided with the gun, with the operator of this
equipment at all times. The card contains important
treatment information should an injection injury
occur. Additional cards are available at no charge
from Graco.
Pressure Relief Procedure
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,
D
check or service any of the system equipment,
D or install or clean the spray tip.
1. Lock the spray gun trigger safety to avoid acciden-
tally triggering the gun. See Fig. 2.
2. Shut off the power to the pump.
3. Close the bleed-type master air valve (required in
the system).
4. Unlock the gun trigger safety.
5. Hold a metal part of the gun firmly to the side of a
grounded metal waste container and trigger the
gun to relieve the fluid pressure.
6. Lock the gun trigger safety again.
7. Open the pump drain valve (required in the sys-
tem) to help relieve fluid pressure in the displace-
ment pump. In addition, open the drain valve
connected to the fluid pressure gauge (in a system
with fluid regulation) to help relieve fluid pressure
in the hose and gun. Triggering the gun to relieve
pressure may not be sufficient. Have a container
ready to catch the drainage.
8. Leave the drain valve(s) open until you are ready
to spray again.
9. If you suspect that the spray tip or hose is com-
pletely clogged or that pressure has not been fully
relieved after following the steps above
, very
slowly loosen the hose end coupling and relieve
pressure gradually, then loosen the coupling
completely. Now clear the tip or hose obstruction.
Fig. 2
Trigger Safety
Unlocked or in OFF
SAFE Position
Trigger Safety Locked
or in ON SAFE Position