Graco EM 390 Instructions-Parts List Manual page 9

Hose
Connect and Gun (Refer to Fig 1
a. Remove the plastic cap plug from the filter
outlet nipple and screw the
hose onto the nipple.
b. Connect the whip hose between the fluid hose
and the gun inlet connection.
c. Don't use thread sealant, and don't install the
spray tip yet1
CAUTION
To avoid damaging the pressure control, which
may result in poor equipment performance and
component damage, follow these precautions:
1. Always use a minimum of 50 f t (15.2 m) of
nylon spray hose.;
2. Never use a wire braid hose as it is too rigid
to act as a pulsation dampener.
3. Never install any shutoff device between
the filter and the main hose. See Fig 1.
4. Always use the main filter outlet. Never
plug this outlet.
2. Fill Packing NutNVet-Cup (See Fig 2.)
Fill the packing nut/wet-cup 1/3 full with Graco
Throat Seal Liquid (TSL), supplied.
3. Check Electrical Service
a. Be sure the' electrical service is 120 V,
60 HzAC, 15 Amp Iminimum) and that the
outlet you use is properly grounded.
b. Use a grounded extension cord which has 3 wires
of minimum 12 gauge size, and a maximum of
a
gauges may affect sprayer performance.
WARNING
Proper grounding is essential to reduce the risk of
static sparking.which can cause a fire or explosion
and result in serious bodily injury and property
damage.
Read the warning section FIRE OR EXPLOSION
HAZARD on page 3 of this manual and ground
the sprayer as explained there.
4. Plug in the Sprayer
a. Be sure the ON/OFF switch is OFF. Refer to
Fig 3.
b. Plug the power supply cord into a grounded
electrical outlet that is a t least 20 ft (6 m) away
from the spray area to reduce the chance of a
spark igniting the spray vapors.
c. Do not remove the third prong
supply cord plug, which is the grounding
prong, and do not use an adapter.
5. Flush the pump to remove the lightweight motor
oil which was left in to protect pump parts after fac-
for flushing procedure.
6. Prepare the paint according to the manufacturer's
recommendations.
f t (15.2 m) fluid
a. Remove any skin that may have formed.
b. Stir the paint to dissolve pigments.
c. Strain the paint through a fine nylon mesh bag
Fig 1
.
PACKING
Fig
the power
of
Fig
(available at most paint dealers) to remove par-
is probably the most important step toward
trouble-free spray painting.
NUT/
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SWITCH
CONTROL
KNOB
9
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