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307-735
8
SETUP
WARNING
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
2750 psi (190 bar) Maximum Working
Pressure
.
This is to reduce the risk of serious
bodily
injury caused by static sparking, fluid injection or
over-pressurization
and rupture of the hose or
gun.
CAUTION
To avoid damaging the pressure control, which
may result in poor equipment performance and
component
damage, follow these precautions.
1. Always use nylon spray hose at least 50 ft.
(15.2
m) long.
2. Never
use a wire braid hose; it is too
rigid to act
as
a pulsation dampener
.
3. Never
install any shutof
f device between the
fil
-
ter
and the main hose.
See Fig 1.
4. Always
use the main filter outlet for one gun op
-
eration.
Never plug this outlet.
1. Connect the hose and gun
(See Fig 1)
a. Remove
the plastic cap plug from the filter outlet
nipple and screw the 50 ft. (15.2 m) main fluid
hose
onto the nipple.
b. Connect the 3 ft (0.9 m) hose between the main
fluid
hose and the gun inlet adapter
.
c. DO
NOT
use thread sealant, and DO NOT install
the
spray tip yet!
2. Fill the packing nut/wet–cup 1/3 full with Graco
Throat
Seal Liquid (TSL), supplied.
See Fig 1.
3.
Check the electrical service
a. Be
sure the electrical service
is 120 V
, 60 HzAC,
15 Amp (minimum), and that the outlet you use
is
properly grounded.
b. DO
NOT remove the grounding prong of the
plug,
and
do not use an adapter
.
c. Use
a grounded extension
cord which has 3 wires
having a 12 gauge size, and a maximum length
of
200 ft (61 m). Longer lengths or smaller gauges
may
af
fect sprayer performance.
4. Be
sure your system is properly grounded before
operating it. Read and follow the warning section,
FIRE
OR EXPLOSION HAZARD
, on page 3.
5.
Plug in the sprayer
a.
Be sure the ON/OFF switch is OFF
.
See Fig 1.
b. Plug
the power supply cord into a grounded
elec
-
trical
outlet that is at least 20
ft (6 m) aways from
the
spray area to reduce the chance of a spark ig
-
niting
the spray vapors.
c. Do
not remove the third prong of
the power sup
-
ply
cord plug, which is the grounding prong,
and
do
not use an adapter
.
6. Flush the pump
to remove the lightweight oil which
was left in the pump to protect it from rust.
a. Before
using water-base paint, flush with
mineral
spirits,
followed by a soapy water flush, and
then
flush
with clean water
.
b. Before using oil-base paint, flush with mineral
spirits,
only
.
c. See FLUSHING GUIDELINES, on page 12, for
the
flushing procedure.
7. Prepare the paint according to the manufacturer’s
recommendations.
a. Remove
any skin that may have formed.
b.
Stir the paint to mix pigments.
c. Strain the paint through a fine nylon mesh bag
(available at most paint dealers) to remove par-
ticles
that could clog the filter or spray tip. This is
probably
the most important step toward trouble-
free
spraying.