Graco HYDRA-SPRAY 218-058 A, Instructions-Parts List Manual

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.WARMING
To reduce the risk of serious bodily injury,
Pressure Relief Procedure
fluid injection, splashing in the eyes or on
5.
Hold a metal part of the gun firmly to the side of
the skin, or injury from moving parts, always
a
grounded metal pail, and trigger the gun to
follow this procedure whenever you shut off the
relieve pressure.
pump, when checking or servicing any part of the
6. Engage the gun safety
latch.
system, when installing, cleaning or changing
spray tips, and whenever you stop spraying.
7.
Open the drain valve having
a
con-
1.
Engage the gun' safety latch.
tainer ready to catch the drainage.
2. Turn off the air to the pump.
8.
Leave the drain valve open until you are ready
to spray again.
3.
Close the bleed-type master air valve
you suspect the spray tip or hose
is
completely
clogged, or thatpressure has not been fully relieve
after following the steps
VERY SLOWLY
loosen the tip guard retaining nut or hose end
coupling and relieve pressure gradually, then
completely. Now clear the or hose.
(required).
4.
Disengage the gun safety latch.
removed to reduce the risk
of
accidentally
Never operate the pump with the air motor plates
ing or amputating your fingers on in
I
CHECK ALL POSSIBLE PROBLEMS AND SOLUTIONS
BEFORE
DISASSEMBLING PUMP.
TROUBLESHOOTING CHART
PROBLEM
ow on both strokes
Restricted line or inadequate air Pump operates but output
SOLUTION CAUSE
Clear; increase
air
Insufficient air pressure, closed or
clogged air valves, etc.
Clean; open (be sure to
use
air filter)
Exhausted fluid supply Refill; purge all air from
Clogged fluid line; valves,
Clear' (be sure to use
Tight throat packing nut Loosen
(see
page
pump and fluid lines
fluid filter)
Loose throat packing nut or worn
packings
124)
Tighten (see page
replace.
Clear, service
ball
operates but output
ow on down stroke
Held open or worn intake valva
operates but output
ow on up stroke
Held open or worn fluid piston ball
pump and fluid lines.
Refill; purge ell air from Exhausted fluid supply
irratic or accelerated
or packings
Clear; service
I I
Held open or worn intake valve
ball
Clear, service
Held open or worn fluid piston
Clear, service
TROUBLESHOOTING CHART CONTINUED ON NEXT PAGE
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