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To Spray
Mix And Strain Paint, Adjust Pressure
And Begin
the paint t o remove any undissolved particles or foreign
Mix your paint as instructed by its manufacturer. Strain
material, that could clog thespray tip.
tip on the gun, close drain valve, then turn on the unit
Put the suction tube into the pail of paint. Put the spray
and let
it
prime and stall. Trigger the gun into a waste
container and hold until all air is forced out of the
system.
Adjust spray pressure to the lowest pressure nee'ded to
completely atomize the paint, then check spray pattern.
The tip size and angle determines the pattern width and
flow rate. Don't try to get more coverage by increasing
the pressure
-
use a larger tip. Separate literature,
306-997, will tell you the right way to apply paint by
"air1ess"spraying.
The standard hose and spray tip selected will handle
most materials quite well. However, you may want t o
use some of the high viscosity materials and a large
orifice spray tip, or longer hoses. If
so,
you must use
hoses with an inside diameter large enough to avoid too
must loss of atomizing pressure a t the spray tip. Your
Graco distributor can help you choose the proper size
hose and spray tip for your application.
Before laying unit on its back for transporting, reduce
wet cup level to 113 full or less. Load unit as shown in
the illustration below. Never lay the unit on its side.
n
HOWTOLOADINTOSTATIONWAGON
k - ! h
NEVERLAYUNITONSIDE
w
NOTE:.
The wet-cup must always contain TSL. To
prevent losing the TSL during transport,
stuff a rag or some cotton into the wet-cup.
tion with a solvent soaked brush to keep material from
Clean out front of tip frequently during the day's opera-
building up and clogging tip.
Cleaning A Clogged Tip
If the spray tip clogs while spraying, release spray gun
trigger, engage trigger safety and turn Reverse-A-Clean
handle 180". Disengage trigger safety and trigger gun.
Fluid pressure should force obstruction from spray tip.
Release trigger, engage trigger safety, return handle to
original position and resume spraying.
If fluid pressure fails to clear tip, see Reverse-A-Clean
instruction manual no. 307-321.
T
W
A
R
N
l
N
G
1
Never hold your hand or a rag over spray tip when
cleaning.
I
Always point the gun toward the ground or into a
waste container.
I
I
I
4 '
307-111
DRAINVALVE-
TILTUNITAND
LOWER INTO
PAINTPAIL
ON-OFFSWITCH
CONTACTWHEN FLUSHING
SOLID, BARE METAL
Fig
2
Shutdown and Care of Your Unit
If you are going to stop spraying for a short time (lunch,
drain valve, engage trigger safety, take the spray nozzle
breaks, etc.);turn unit off, relieve pressure by opening
off gun, and put front end of gun and tip in solvent.
Whenever possible, park the unit in the shade or a
relatively cool area to reduce the possibility of over-
heating.
When through. spraying always stop pump a t the
tightness periodically and tighten with 114 in. diameter
bottom of its
stroke. Check packing-nut-wet-cup
rod if necessary. See Fig 3.
.manifold filter often, and when storing unit. Flush all
Clean spray housing, tip, suction strainer and outlet
paint out of unit as explained above, on the last work
day of each week. If you are spraying paint that dries
more quickly than overnight, flush daily at shutdown.
with mineral spirits solvent. If water is left in the pump,
If you use water to flush, pump
it out and fill the pump
the lowest possible pressure when flushing.
corrosion will shorten the life of the pump. Always use
Check hydraulic oil sump occasionally. Add as needed.
tion or every 12 months, whichever comes first. Also
Change hydraulic fluid after every 2000 hours of opera-
clean hydraulic pump intake filter and replace the
disposable filter in the return line. Unplug unit, relieve
pressure, remove shield and follow instructions given
under, "Replacing the Electric Motor" to get at filters,
remove old fluid and clean sump. Pour one gallon
(3.8 liter1 of new approved hydraulic fluid into sump
through strainer and turn the unit on and off a few times
to remove air from hydraulic system.
.
. . .
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