Graco Series A User manual

Parts

WARNING
HIGH PRESSURE SPRAY CAN CAUSE EXTREMELY SERIOUS INJURY.
FOR PROFESSIONAL USE ONLY.
OBSERVE ALL WARNINGS.
Read and understand all instruction manuals, tags, and warnings before operating equipment.
INJECTION HAZARD
Fluids under high pressure from spray or leaks can
penetrate the skin and cause extremely serious injury,
including the need for amputation.
NEVER point the spray gun at anyone or any part of the
body.
NEVER put hand or fingers over the spray tip.
NEVER try to stop or deflect leaks with your hand or
body.
AL WAYS have tip guard in place when spraying.
MEDICAL TREATMENT
If an fluid ap ears to penetrate our skin get
EbERGENC% MEDICAL CARE j;T ONCE:
DO NOT TREAT AS A SIMPLE CUT.
Tell the doctor exactly what fluid was injected. For
treatment instructions have our doctor call the
NATIONAL POISON 8ENTER NETWORK
[phone]
AVOID COMPONENT RUPTURE
--
This pump develops 950 psi (66 bar) material pressure
at 95 psi (6.5 bar) air supply pressure. NEVER exceed
95 psi (6.5 bar) air supply pressure to pump.
Always be sure that all fluid handling components have
a maximum working pressure rating of at least 950 psi
(66 bar).
NEVER alter or modify the equipment.
Any damage to a hose can result in hose failure and
possible bodily injury or property damage. Before each
use, check entire hose for cuts, leaks, abrasion or bulg-
ing of cover or damage or movement of couplings. If
any of these conditions exist, replace the hose im-
mediately. Never use tape or any device to try to mend
the hose.
Help prevent damage to hose by handling and routing
carefully. Do not expose hose to temperatures above
180°F (82OC) or below -4OOF (-4OOC). Do not pull
sprayer with hose.
USE EXTREME CARE WHEN CLEANING
SPRAY TIPS AND SERVICING
Before removing any part for cleaning or servicing,
always disconnect power source and carefully relieve
fluid pressure by triggering spray gun, engaging gun
safety latch and any other equipment safety locks, and
opening any drain or bleeder valves. Leave drain valve
open during servicing. Remove spray tip from gun for
cleaning.
2307-595
SPRAY GUN SAFETY ~
When spray gun is not actually spraying, always set the
gun safety latch in the horizontal or “SAFE” position,
making the gun inoperative.
DO NOT REMOVE OR MODIFY any pati of the gun.
CHECK OPERATION OF ALL GUN SAFETY
DEVICES BEFORE EACH USE.
Always remove the tip from the gun to clean it.
Be very careful when removing the spray tip or hose
from gun. A plugged line contains fluid under pressure.
Your system should have a drain valve downstream
from the pump to relieve the pressure. If you use a fluid
pressure regulator, you must install another drain valve
downstream from the regulator. If tip or line is plugged,
open the drain valve, then loosen air cap retainer or
hose coupling slightly and relieve the pressure slowly
before removing completely.
PREVENT STATIC SPARKING
Always be sure all system equipment and objects being
sprayed are properly grounded. The high velocity flow
of fluid creates static electricity. Sparks may cause fire,
explosion, or electric shock.
Use only conductive or grounded air and fluid hoses for
air-assisted airless applications. Be sure gun is ground-
ed through hose connections. Check ground continuity
in hose and equipment once a week. Overall (end to
end) resistance of unpressurized hose must not exceed
29 megohms for any coupled length or combination of
hose lengths.
Never exceed 500 ft (150 m) overall combined hose
length to assure electrical continuity.
When flusning equipment, remove spray tip, use the
lowest possible pressure, and maintain firm metal to
metal contact between gun and grounded metal waste
container. This reduces the chance of static sparking.
Follow the
precautions
manufacturer’s
coating and solvent
and warnings.
safety
United States Government safety standards have been
adopted under the Occupational Safety and Health Act.
These standards - particularly the General Standards,
Part 1910, and the Construction Standards, Part 1926
-
should be consulted in connection with your use of
air-assisted airless spray equipment.

CMaster Air Valve
6 Puma Air Regulator
E
Drain Valve -
Fluid Shutoff Valve
G Fluid Filter
HGrounded Fluid Hose
JPump
L”
Air Hose
Air Pressure Regulator
1
Pump Fluid Inlet
In-Line Fluid Filter
S
Trigger Safe6
. . A ..I.--
Vbrouna wire
H
L
Pattern Adjustment Valve KnQb
Fluid Pressure Regulator
RPressure Gauoe
INSTALLATION
I
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,,. \ ,, , :i \ ; . . . I’ ;: *
.
WARNING
Pressure Relief Procedure
Always relieve the system pressure whenever you
stop spraying, and before installing, removing or
cleaning any parts to avoid serious bodily injury
from high pressure fluid trapped in the system.
Always follow this procedure: shut off the pump,
trigger the spray gun, engage the trigger safety,
and slowly open the drain valve(s). Leave the
drain valve(s) open until you are ready to use the
system again.
The dimensional drawing on the back page gives
measurements needed for installing pump on a custom
designed mounting. See ACCESSORIES on back page
for available Grace mounting accessories.
NOTE: Reference numbers and letters in paren-
theses in the text refer to the Typical Installa-
tion, Fig 1, 2, and Parts Drawing.
Connect a ground wire to pump air motor. Loosen
grounding lug locknut (T) and washer (U). Insert one
end of a 12 ga (1.5 mm2) minimum ground wire (VI into
slot in lug (W) and tighten locknut securely. See Fig 1.
Connect the other end of wire to a good ground. Check
your local code. See ACCESSORIES for available
ground wire and clamp.
System Accessories
Refer to the Typical Installation drawing and the AC-
CESSORIES section for assistance in setting up your
system. If you supply your own accessories, be sure
they are adequately sized to meet your system re-
quirements.
We recommend installing an air line filter (A) to remove
harmful dirt and moisture from your compressed air
supply, an air line oiler (8) for automatic pump lubrica-
tion, a bleed-type master air valve (C), and an air
regulator (D) to control pump speed and material
pressure. See Accessories on back page.
Downstream from the pump in the fluid line, we recom-
mend installing a fluid shutoff valve (F), a fluid filter (G),
a drain valve (El, and a fluid pressure regulator (G).
Air and fluid valves are used to shut off and/or relieve
pressures in the system before adding, removing or ser-
vicing any parts of the system.
Connect Hoses
Connect a grounded air line hose (K), a grounded fluid
hose (H 1 and a suction hose to your system.
Connect a suction hose or siphon tube to the 3/a
npt(m) intake (M) of pump.
Connect a l/2 in. ID (minimum) grounded air supply
hose (K) to the pump’s l/2 npt(f) air inlet or the air
regulator’s inlet fitting.
Fig 1
307595 3

Flush the Pump 88fOr8 Using
Pumps are tested with No. 10 motor oil which is left in
to protect pump parts. To prevent contamination of
material, flush pump with a compatible solvent before
using. If pump is being used to supply a circulating
system, allow solvent to circulate for at least 10
minutes.
Starting and Adjusting Pump
Fill wet-cup (19) one half full with Grace Throat Seal Li-
quid (TSL), trigger spray gun and slowly open air supply
valve until pump starts (about 20 psi (1.4 bar)). Allow
pump to cycle slowly until all air is pushed out of lines.
Release trigger, pump will stall against pressure.
With pump and lines primed, and with adequate air
pressure and volume supplied, the pump will start and
stop as the spray gun is triggered and released. In a cir-
culating system, it will run continuously and speed up or
slow down as supply demands until air supply is shut
Off.
Use an adequately sized air regulator to control pump
speed and material pressure. See ACCESSORIES.
Always use the lowest air pressure necessary to give
you the results you want.
Never exceed 95 psi (6.5 bar) air pressure to pump.
Keep the wet-cup (19) filled with Grace Throat Seal Li-
quid (TSL). See Fig 2.
Never allow the pump to run dry of material being
pumped. A dry pump will quickly accelerate to a high
speed, possibly damaging itself. If your pump ac-
celerates quickly, or is running too fast, stop it im-
mediately and check the material supply. If the supply
container is empty and air has been pumped into lines,
prime pump and lines with material, or flush and leave
filled with compatible solvent. Be sure to eliminate all air
from fluid system.
Shutdown and Care of Pump
For overnight shutdown, shut off and relieve air
pressure and material pressure according to the
Pressure Relief Procedurewarning on page 3. Always
stop the pump at the bottom of its stroke to keep
material from drying on the exposed displacement rod
and damaging throat packings.
Always flush the pump before the material dries on rod.
If the pump is to be stored for any period of time, and
you are pumping water based material, first flush with
water, then with mineral spirits to protect the pump
parts from rusting.
INSTALL WITH
WRENCH FLATS
AT TOP END
KEY
:
4
5
s
8
10
Throat Packing
Dylacement Rod
Cylinder
Spacer
Bearing
Piston Packing
Intake Valve Housing
Ball Stop Pin
3/a
18 NPT
-8
l6
9
-10
b
11
8314-14 NPT
11 Ball Guide
12 Ball
13 Packing
14 Piston Valve
15 Packing
16 Washer
17 Housing
18 Bearing
19 Nut (Wet-Cup)
20 Washer
4 307-595

t
WARNING
f
TO AVOID SERlOUS BODILY INJURY: Always disconnect air supply and relieve all pressures
before servicing pump. Never operate pump with air myfflfr plates removed. They contain impor-
tant warnings and also protect you from the moving air piston.
/
TROUBLESHOOTING CHART
Problem
Pump fails to operate.
Cause
Restricted line or inadequate
air supply.
Insufficient air pressure.
Closed or clogged air valves,
etc.
Solution
Clear line or increase line size.
Open air valves, clean if
necessary.
Exhausted material supply.
Damaged air motor.
Dried material seizure of
displacement rod (3).
Refill.
Service. See 307-043.
Remove.
Pump operates but output low
on both strokes. Restricted line or inadequate air line supply.
Insufficient air pressure.
Closed or clogged air valves,
etc.
Clear line or increase line size.
Open air valves, clean if
necessary.
Pump operates but output low
on downstroke.
Pump operates but output low
on upstroke.
Exhausted material supply.
Obstrucr:: -aterial line,
valves, ; ,fC.
Worn pat. ; i8 & 13).
Held open or worn fluid in-
take valve.
Held open or worn fluid
piston valve or packing leak-
ing.
Refill.
Clear*.
Replace packings.
Clear, service.
Clear, service.
Erratic or accelerated operation. Exhausted material supply.
Held open or worn fluid in-
take valve.
Refill.
Clear, service.
Held open or worn piston
valve or packing leaking. Clear, service.
*Release pressures and disconnect material line. Reduce the air pressure to 20 psi (1.4 bar). If pump starts when air is turned on
again, the line, etc. is clogged.
Check all other remedies before disassembling pump.
307-595 5