Graco 307862G Displacement Pump Owner's Manual

INSTRUCTIONS–PARTS LIST
307–862
Rev. G
Supersedes F
This manual contains important
warnings and information.
READ AND RETAIN FOR REFERENCE
Displacement Pump
4050 psi (283 bar) Maximum Working Pressure
Part No. 217–530, Series C
Severe-Duty Pump*
with UHMWPE and Leather Packings.
Part No. 237–066, Series A
Severe-Duty Pump*
with Leather Packings and PTFEBackup.
* Severe-Duty Displacement Pumps have an
abrasion and corrosion resistant displacement rod
and sleeve. Refer to Technical Data on the back
cover for “Wetted Parts” information.
Table of Contents
03863
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5, 6
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Graco Phone Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . 8
GRACO INC.
P.O. BOX 1441 MINNEAPOLIS, MN
COPYRIGHT 1987, GRACO INC.
55440–1441
WARNINGS
High Pressure Spray Can Cause Serious Injury. For Professional Use Only.
Observe All Warnings. Read and understand all instruction manuals before operating equipment.
FLUID INJECTION HAZARD
General Safety
This equipment generates very high fluid pressure. Spray
from the gun/dispensing valve, leaks or ruptured components
can inject fluid through your skin and into your body and
cause extremely serious bodily injury, including the need for
amputation. Also, fluid injected or splashed into the eyes or
on the skin can cause serious damage.
Never point the spray gun/dispensing valve at anyone or at
any part of the body. Never put hand or fingers over the spray
tip/nozzle. Never try to “blow back” paint; this is not an air
spray system.
Always have the tip guard in place on the spray gun when
spraying.
Always follow the Pressure Relief Procedure, right, before
cleaning or removing the spray tip/nozzle or servicing any
system equipment.
Never try to stop or deflect leaks with your hand or body.
Be sure equipment safety devices are operating properly
before each use.
Medical Alert – Airless Spray Wounds
If any fluid appears to penetrate your skin, get emergency
medical care at once. Do not treat as a simple cut. Tell the
doctor exactly what fluid was injected.
NOTE TO PHYSICIAN: Injection into the skin is a traumatic
injury. It is important to treat the injury surgically as soon
as possible. Do not delay treatment to research toxicity. Toxicity is a concern with some exotic coatings injected directly
into the blood stream. Consultation with a plastic surgeon or
reconstructive hand surgeon may be advisable.
Spray Gun/Dispensing Valve Safety Devices
Be sure all spray gun/dispensing valve safety devices are
operating properly before each use. Do not remove or modify
any part of the spray gun/dispensing valve; this can cause a
malfunction and result in serious bodily injury.
Safety Latch
Whenever you stop spraying/dispensing, even for a moment,
always set the safety latch in the closed or “safe” position,
making the spray gun/dispensing valve inoperative. Failure to
set the safety latch can result in accidental triggering of the
spray gun/dispensing valve.
Trigger Guard (if so equipped)
Never operate the spray gun/dispensing valve with the trigger
guard removed. This guard helps prevent the gun/dispensing
valve from triggering accidentally if it is dropped or bumped.
Diffuser (only on spray guns)
The spray gun diffuser breaks up spray and reduces the risk
of fluid injection when the tip is not installed. Check the diffuser operation regularly. Follow the Pressure Relief Procedure, below, then remove the spray tip. Aim the spray gun
into a grounded metal pail, holding the spray gun firmly to the
pail. Using the lowest possible pressure, trigger the spray
gun. If the fluid emitted is not diffused into an irregular stream,
replace the diffuser immediately.
Tip Guard (only on spray guns)
Always have the tip guard in place on the spray gun while
spraying. The tip guard alerts you to the fluid injection hazard
and helps reduce, but does not prevent, the risk of accidentally placing your fingers or any part of your body close to the
spray tip.
Spray Tip/Nozzle Safety
Use extreme caution when cleaning or changing spray tips/
nozzles. If the spray tip/nozzle clogs while spraying/dispensing, engage the safety latch immediately. Always follow the
Pressure Relief Procedure and then remove the spray tip/
nozzle to clean it.
Never wipe off build-up around the spray tip/nozzle until pressure is fully relieved and the safety latch is engaged.
Pressure Relief Procedure
To reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on the skin, or injury from moving parts, always follow this procedure whenever you shut off
the pump, when checking or servicing any part of the spray/
dispensing system, when installing, cleaning or changing
spray tips/nozzles, and whenever you stop spraying/dispensing.
1.
Engage the spray gun/dispensing valve safety latch.
2.
Shut off the air or hydraulic fluid to the pump.
3.
Close the bleed-type master air valve (required in airpowered systems).
4.
Disengage the spray gun/dispensing valve safety latch.
5.
Hold a metal part of the spray gun/dispensing valve
firmly to the side of a grounded metal pail, and trigger the
gun/dispensing valve to relieve pressure.
6.
Engage the spray gun/dispensing valve safety latch.
7.
Open the drain valve (required in your system), having a
container ready to catch the drainage.
8.
Leave the drain valve open until you are ready to spray
again.
If you suspect that the spray tip/nozzle or hose is completely
clogged, or that pressure has not been fully relieved after
following the steps above, very slowly loosen the retaining
nut or hose end coupling and relieve pressure gradually, then
loosen completely. Now clear the tip/nozzle or hose.
EQUIPMENT MISUSE HAZARD
General Safety
Any misuse of the spray/dispensing equipment or accessories, such as overpressurizing, modifying parts, using incompatible chemicals and fluids, or using worn or damaged parts,
can cause them to rupture and result in fluid injection, splashing in the eyes or on the skin, or other serious bodily injury, or
fire, explosion or property damage.
Never alter or modify any part of this equipment; doing so
could cause it to malfunction.
Check all spray/dispensing equipment regularly and repair or
replace worn or damaged parts immediately.
Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and solvent manufacturer.
System Pressure
The maximum safe working pressure is determined by the air
or hydraulic motor. Do not exceed the maximum working
pressure stated on your complete pump.
Be sure that all spray equipment and accessories are rated to
withstand the maximum working pressure of the pump. Do
not exceed the maximum working pressure of any component or accessory used in the system.
Fluid Compatibility
Be sure that all fluids and solvents used are chemically compatible with the wetted parts shown in the Technical Data on
the back cover. Always read the manufacturer’s literature
before using fluid or solvent in this pump.
FIRE OR EXPLOSION HAZARD
Static electricity is created by the high velocity flow of fluid
through the pump and hose. If every part of the spray/dispensing equipment is not properly grounded, sparking may
occur, and the system may become hazardous. Sparking
may also occur when plugging in or unplugging a power supply cord. Sparks can ignite fumes from solvents and the fluid
being sprayed/dispensed, dust particles and other flammable
substances, whether you are spraying/dispensing indoors or
outdoors, and can cause a fire or explosion and serious bodily injury and property damage. Do not plug in or unplug any
power supply cords in the spray/dispensing area when there
is any chance of igniting fumes still in the air.
If you experience any static sparking or even a slight shock
while using this equipment, stop spraying/dispensing immediately. Check the entire system for proper grounding.
Do not use the system again until the problem has been identified and corrected.
Grounding
To reduce the risk of static sparking, ground the pump and all
other spray/dispensing equipment used or located in the
spray/dispensing area. Check your local electrical code for
detailed grounding instructions for your area and type of
equipment. Be sure to ground all of this spray/dispensing
equipment:
1.
Pump: Ground the complete pump as indicated in your
separate pump instruction manual.
2.
Air or hydraulic hoses: use only grounded hoses.
3.
Fluid hoses: use only grounded fluid hoses.
4.
Air compressor or hydraulic supply: follow manufacturer’s recommendations.
5.
Spray gun/dispensing valve: grounding is obtained
through connection to a properly grounded fluid hose
and pump.
6.
Fluid supply container: according to your local code.
7.
Object being sprayed: according to your local code.
8.
All solvent pails used when flushing, according to your
local code. Use only metal pails, which are conductive,
placed on a grounded surface. Do not place the pail on a
nonconductive surface, such as paper or cardboard,
which interrupts the grounding continuity.
9.
To maintain grounding continuity when flushing or relieving pressure, always hold a metal part of the spray gun/
dispensing valve firmly to the side of a grounded metal
pail, then trigger the spray gun/dispensing valve.
Flushing Safety
Before flushing, be sure the entire system and flushing pails
are properly grounded. Refer to Grounding, at the left.
Follow the Pressure Relief Procedure on page 2, and
remove the spray tip/nozzle from the spray gun/dispensing
valve. Always use the lowest possible fluid pressure, and
maintain firm metal-to-metal contact between the spray
gun/dispensing valve and the pail during flushing to reduce
the risk of fluid injection injury, static sparking and splashing.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers or other
body parts. In air-powered systems, the air motor piston (located behind the air motor shield) moves when air is supplied
to the motor. Therefore, never operate the pump with the air
motor shield removed. Keep clear of moving parts when starting or operating the pump. Before checking or servicing the
pump, follow the Pressure Relief Procedure on page 2 to
prevent the pump from starting accidentally.
HOSE SAFETY
High pressure fluid in the hoses can be very dangerous. If the
hose develops a leak, split or rupture due to any kind of wear,
damage or misuse, the high pressure spray emitted from it
can cause a fluid injection injury or other serious bodily injury
or property damage.
Handle and route hoses carefully. Do not pull on hoses to
move equipment. Do not use fluids which are not compatible
with the inner tube and cover of the hose. Do not expose
Graco hoses to temperatures above 180_ F (82_ C) or below
–40_ F (–40_ C).
All fluid hoses must have spring guards on both ends!
The spring guards help protect the hose from kinks or bends
at or close to the coupling which can result in hose rupture.
Hose Grounding Continuity
Tighten all fluid connections securely before each use. High
pressure fluid can dislodge a loose coupling or allow high
pressure spray to be emitted from the coupling.
Never use a damaged hose. Before each use, check the entire hose for cuts, leaks, abrasion, bulging cover, or damage
or movement of the hose couplings. If any of these conditions
exist, replace the hose immediately. Do not try to recouple
high pressure hose or mend it with tape or any other device.
A repaired hose cannot safely contain the high pressure fluid.
Proper hose grounding continuity is essential to maintaining a
grounded spray/dispensing system. Check the electrical resistance of your air and fluid hoses at least once a week. If
your hose does not have a tag on it which specifies the maximum electrical resistance, contact the hose supplier or manufacturer for the maximum resistance limits. Use a resistance
meter in the appropriate range for your hose to check the
resistance. If the resistance exceeds the recommended limits, replace it immediately. An ungrounded or poorly grounded
hose can make your system hazardous. Also, read FIRE OR
EXPLOSION HAZARD on page 3.
IMPORTANT
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.
Manual Change Summary
NOTE: Displacement Pump Model 237–066 and Pump Repair Kit 237–076 are added to the manual.
This pump has leather packings and a PTFErbackup.
4
307-862
Service
WARNING
To reduce the risk of serious bodily injury, including
fluid injection, splashing in the eyes or on the skin,
or injury from moving parts, always follow the Pressure Relief Procedure on page 2 whenever you
shut off the pump, when checking or servicing any
part of the spray/dispensing system, when installing, cleaning or changing spray tips/nozzles, and
whenever you stop spraying/dispensing.
Apply sealant and torque to 150–175 ft–lb (203–237 N.m).
Apply sealant and torque to 225–275 ft–lb (305–370 N.m).
See Fig. 2.
See Fig. 3.
4
14
Disassembly
NOTES: Packing Repair Kits 220–339 and 237–076
are available. For the best results, use all the new
parts in the kit. Parts included in the repair kit are
marked with an asterisk, for example (1*).
1. Solvent flush the pump, if possible. Stop the pump
at the bottom of its stroke. Follow the Pressure
Relief Procedure on page 2. Disconnect all
hoses. Disconnect the displacement pump from
the motor as explained in your separate pump
manual.
*5
2. Screw the intake valve housing (17) out of the
pump outlet housing (16). Note which set of holes
the ball stop pin (12) is in. Remove the pin, ball
guide (13), ball (2), and o-ring (3) from the intake
valve housing (17). See Fig. 1.
3. Unscrew the wet-cup/packing nut (14) and push
the displacement rod (4) down and out of the outlet
housing (16).
*19
16
*1
10
*6
*19
4. Place the flats of the displacement rod (4) in a vise
and unscrew the piston (15) from the rod.
15
5. Remove the ball (1), retainer (6), and gland/packing stack (19) from the piston.
6. Remove the gland/packing stack from the throat.
7. Clean all parts thoroughly, and check for wear,
scratches or other damage. Scoring or irregular
surfaces on the displacement rod (4) or polished
inner wall of the sleeve (10) can cause premature
packing wear and leaking. Check these parts by
rubbing a finger on the surfaces or by holding the
parts up to the light at an angle. If either is worn or
scratched, replace it. Be sure the ball seats of the
piston (15) and intake valve housing (17) are not
chipped or nicked. Replace any worn or damaged
parts to ensure that the pump will not leak.
NOTE: If the sleeve needs replacement and is hard to
remove, contact Graco Technical Assistance (see back
page).
12
3*
13
17
Fig. 1
*2
03864
307-862
5
Service
Reassembly
1. Remove the shims from one of the repair kit’s
packing stacks (19*). Lubricate the stack and
install it in the throat of the pump outlet housing
(16). Be sure the lips of the v-packings face down
in the throat. See Fig. 2. Loosely install the packing nut/wet-cup (14).
2. Reinstall the sleeve (10) if it was removed, making
sure to replace the gasket (5*). Be sure the tapered end of the sleeve faces down toward the
pump inlet.
3. Lubricate the other packing stack (19*) and install
it on the piston (15). Do not remove the shims
from the stack. Be sure the lips of the v-packings
face up on the piston. Install the retainer (6*) and
ball (1*). See Fig. 3.
Detail of Throat Gland/Packing Stack
1
Remove shims from stack when installing in throat.
2
Lips of v-packings must face down.
3
Female Gland.
4
Male Gland.
5
UHMWPE Packing.
6
Leather Packing.
7
PTFEr Packing.
Model 217–530
Model 237–066
3
3
5
1
2
7
6
5
*19
6
6
5
4. Apply thread sealant and screw the piston (15) into
the displacement rod (4). Torque to 150–175 ft–lb
(203–237 N.m). See Fig. 1.
4
4
5. Lubricate the displacement rod (4), and insert it in
the bottom of the outlet housing (16). Carefully
push it up through the throat packings.
Fig. 2
6. Install the ball (2*), ball guide (13), and ball stop
pin (12) in the intake valve housing (17). Be sure
the pin is in the desired set of holes, as was noted
in step 2 under Disassembly. (To change the pin
location, see Check Valve Adjustment, below.)
Install the o-ring (3*) on the intake valve housing
(17). Apply thread sealant and screw the assembly
into the outlet housing (16). Torque to 225–275
ft–lb (305–370 N.m).
Detail of Piston Gland/Packing Stack
7. Reconnect the displacement pump to the motor
(see your separate pump manual). Reconnect the
ground wire if it was disconnected during repair.
1
Do not remove shims from stack when installing on piston.
2
Lips of v-packings must face down.
3
Female Gland.
4
Male Gland.
5
UHMWPE Packing.
6
Leather Packing.
7
PTFErPacking.
8
Shim (as required).
Model 217–530
*6
8. Tighten the packing nut just enough to prevent
leakage, but no tighter. Fill the wet-cup half full
with TSL or compatible solvent.
Check Valve Adjustment
The intake check valve is set for high flow rates or high
viscosity fluids. To set the valve for lighter viscosity
fluids or a lower flow rate, to minimize surging at pump
stroke changeover, move the ball stop pin (12) to the
lower set of holes, decreasing the check ball travel.
The piston check valve in this pump is not adjustable.
03865
Model 237–066
4
5
6
1
2
5
*19
6
5
3
8
Fig. 3
4
6
7
3
8
03866
Parts
Model 217–530, Series C
Model 237–066, Series A
Ref
No.
Part No.
Description
1*
2*
3*
4
5*
6*
10
12
100–279
101–178
166–073
178–899
164–652
164–654
178–900
172–399
13
14
178–761
205–514
15
205–516
16
17
217–470
217–476
BALL, piston; steel; 7/8” dia.
BALL, intake; steel; 1–1/4” dia
O-RING; PTFE r
ROD, displacement; stainless steel
GASKET; PTFE r
RETAINER, piston seal; carbon steel
SLEEVE; stainless steel
PIN, ball stop, intake valve;
stainless steel
GUIDE, ball; carbon steel
PACKING NUT/WET-CUP;
carbon steel
PISTON; carbon steel with
tungsten carbide seat
HOUSING, outlet; carbon steel
HOUSING, intake valve; carbon steel
with tungsten carbide seat
TAG, warning (not shown)
GLAND/PACKING STACK;
UHMWPE and leather
used on Model 217–530
GLAND/PACKING STACK;
leather with PTFE r backup
used on Model 237–066
18Y
19*
172–479
223–367
223–483
Qty
1
1
1
14
1
1
1
1
1
1
4
1
1
1
19*
1*
1
1
2
6*
2
* These parts are included in Repair Kits 220–399 and
237–076 which may be purchased separately. Kit also
includes a tube of thread sealant (102–969) for use on
the piston (15), a cotter pin (100–103) to connect the displacement rod to the motor, and another cotter pin
(101–274) which is not used with this pump.
19*
Y Replacement Danger and Warning labels, tags and cards
are available at no cost.
16
15
13
*5
3*
12
2*
10
17
03867
Technical Data
Maximum working pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4050 psi (283 bar)
Fluid inlet size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1/2 npt(f)
Fluid outlet size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/4 npt(f)
Wetted parts . . . . . . . . . . Model 217–530: 303, 304, and 17–4 PH grades of Stainless Steel;
Carbon Steel; Chrome, Zinc, and Cadmium Plating; Tungsten Carbide;
PTFE; Leather; Ultra-High Molecular Weight Polyethylene
Model 237–066: 303, 304, and 17–4 PH grades of Stainless Steel;
Carbon Steel; Chrome, Zinc, and Cadmium Plating; Tungsten Carbide;
PTFE; Leather
The Graco Warranty and Disclaimers
WARRANTY
Graco warrants all equipment manufactured by it and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. As purchaser’s sole remedy
for breach of this warranty, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the
equipment proven defective. This warranty applies only when the equipment is installed, operated and maintained in
accordance with Graco’s written recommendations.
This warranty does not cover, and Graco shall not be liable for, any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or
substitution of non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the
incompatibility with Graco equipment of structures, accessories, equipment or materials not supplied by Graco, or the
improper design, manufacture, installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco
distributor for verification of the claim. If the claimed defect is verified, Graco will repair or replace free of charge any
defective parts. The equipment will be returned to the original purchaser transportation prepaid. If inspection of the
equipment does not disclose any defect in material or workmanship, repairs will be made at a reasonable charge, which
charges may include the costs of parts, labor and transportation.
DISCLAIMERS AND LIMITATIONS
THE TERMS OF THIS WARRANTY CONSTITUTE PURCHASER’S SOLE AND EXCLUSIVE REMEDY AND ARE IN LIEU OF ANY OTHER WARRANTIES (EXPRESS OR IMPLIED), INCLUDING WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, AND OF ANY NON–CONTRACTUAL LIABILITIES, INCLUDING PRODUCT LIABILITIES, BASED ON NEGLIGENCE OR STRICT LIABILITY.
EVERY FORM OF LIABILITY FOR DIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSS IS EXPRESSLY EXCLUDED AND DENIED. IN
NO CASE SHALL GRACO’S LIABILITY EXCEED THE AMOUNT OF THE PURCHASE PRICE. ANY ACTION FOR BREACH OF WARRANTY MUST
BE BROUGHT WITHIN TWO (2) YEARS OF THE DATE OF SALE.
EQUIPMENT NOT COVERED BY GRACO WARRANTY
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, WITH RESPECT TO ACCESSORIES, EQUIPMENT, MATERIALS, OR COMPONENTS SOLD BUT NOT MANUFACTURED BY GRACO.
These items sold, but not manufactured by Graco (such as electric motor, switches, hose, etc.) are subject to the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for
breach of these warranties.
Graco Phone Numbers
TO PLACE AN ORDER, contact your Graco distributor, or call this number to identify the distributor
closest to you: 1–800–367–4023 Toll Free
FOR TECHNICAL ASSISTANCE, service repair
information or assistance regarding the application of
Graco equipment: 1–800–543–0339 Toll Free
Sales Offices: Atlanta, Chicago, Dallas, Detroit, Los Angeles, Mt. Arlington (N.J.)
Foreign Offices: Canada; England; Korea; Switzerland; France; Germany; Hong Kong; Japan
GRACO INC.
P.O. BOX 1441 MINNEAPOLIS, MN
PRINTED IN U.S.A.
n̂
fjN̂m̂M̂n̂g̃ffj
307–862 8/87 Revised 7/94
55440–1441

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