Graco 220-834, Instructions-Parts List Manual

Page: 4 / 28

4
TERMS
NOTE: Identifies additional procedures and information.
WARNING: Alerts user to avoid or correct conditions that
could cause bodily injury. CAUTION: Alerts user to avoid or correct conditions that
could cause damage to or destruction of equipment.
EM 490 COMPONENTS
Fig 7–1
ON/OFF SWITCH
PRESSURE ADJUSTING KNOB
POWER SUPPLY CORD
SPRAY GUN
TIP GUARD
AND TIP
DISPLACEMENT
PUMP
15 m (50 ft) FLUID HOSE
PRESSURE DRAIN VALVE
ELECTRIC MOTOR
FRAME
SUCTION TUBE
0.9 m (3 ft) WHIP HOSE
0113
SETUP
1. Connect the hose and gun. (See Fig 1.)
Remove the plastic plug from the outlet nipple and
screw the 15.2 m (50 ft) fluid hose onto the nipple.
Don’t use thread sealant, and don’t install the spray
tip yet!
If you are supplying your own hoses and spray gun,
be sure the hoses are electrically conductive, that
the gun has a tip guard, and that each part is rated for
at least
192 bar (2750 psi) Working Pressure. This is
to reduce the risk of serious bodily injury caused by
static sparking, fluid injection or overpressurization
and rupture of the hose or gun.
WARNING
To avoid damaging the pressure control, which
may result in poor equipment performance and
component damage, follow these precautions:
1. Always use grounded, flexible spray hose at
least 15.2 m (50 ft) long.
2. Never use a wire braid hose as it is too rigid to
act as a pulsation dampener.
3. Never install any shutof f device between the
outlet of the pressure control and the main
hose.
See Fig 1.
4. Always use the main filter outlet for one gun op-
eration. Never plug this outlet.
CAUTION