Hitachi EM 490 - Manual (Page 9)

307-735 9
SETUP
PACKING NUT/WETCUP
Keep filled with TSL
Fig 1
FILTER
DO NOT INSTALL
A SHUT OFF
DEVICE HERE
50 ft. (15.2 m)
MAIN FLUID HOSE
ON/OFF SWITCH
PRESSURE CONTROL KNOB
3 ft (0.9 m) HOSE
RAC IV DripLess TIP GUARD and SwitchTip
OPERATION
WARNING
Pressure Relief Procedure
To reduce the risk of serious bodily injury, including in-
jection; splashing in the eyes or on the skin; injury from
moving parts or electric shock, always follow this pro-
cedure whenever you shut off the sprayer, when
checking or servicing any part of the spray system,
when installing, cleaning or changing spray tips, and
whenever you stop spraying.
1. Engage the gun safety latch.
2. Turn the ON/OFF switch to OFF.
3. Unplug the power supply cord.
4. Disengage the gun safety latch. Hold a metal part
of the gun firmly to the side of a grounded metal
pail, and trigger the gun to relieve pressure.
5. Engage the gun safety latch.
6. Open the pressure drain valve, having a container
ready to catch the drainage. Leave the pressure
drain valve open until you are ready to operate the
sprayer again.
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved af-
ter following the steps above, VERY SLOWLY loosen
the tip guard retaining nut or hose end coupling and re-
lieve pressure gradually. Then loosen the nut com-
pletely. Now clear the tip or hose obstruction.