Graco 03761B User Manual
Instructions–Parts List
1:1 RATIO
Fast–FloR Pump
Air–operated piston transfer pump for low viscosity fluids. For professional use only.
Only models that are EX certified are approved for use in European explosive atmosphere
locations (see page 4).
1.2 MPa, 12.4 bar (180 psi) Maximum Air Input Pressure
1.2 MPa, 12.4 bar (180 psi) Maximum Fluid Working Pressure
For models that are certified, see page 4.
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Refer to page 4 for a list of pump models.
307427ZAA
EN
This symbol on the nameplate means the
product is listed by ETL.
(UL Standard No. 79, Standard for Power-Operated
Pumps for Petroleum Product Dispensing Systems).
Table of Contents
Symbols 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Models 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Service 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Parts 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement Pump Service 17. . . . . . . . . . . . . . . . . . . .
Displacement Pump Parts 18. . . . . . . . . . . . . . . . . . . . . .
Accessories 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Information 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
03761B
Stubby Pump
Bung-Mounted
Adjustable Length Pump
Bung-Mounted
Drum Length Pump
03761B
0359
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
WARNING
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
INSTRUCTIONS
D This equipment is for professional use only.
D Read all instruction manuals, tags, and labels before operating the equipment.
D Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco
distributor.
D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
D Check equipment daily. Repair or replace worn or damaged parts immediately.
D Do not exceed the maximum working pressure stated on the equipment or in the Technical Data
for your equipment. Do not exceed the maximum working pressure of the lowest rated component
in your system.
D Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.
D Securely mount the pump. Do not attempt to operate it while holding it.
D Do not use hoses to pull equipment.
D Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 82_C (180_F) or below –40_C (–40_F).
D Wear hearing protection when operating this equipment.
D Do not lift pressurized equipment.
D Comply with all applicable local, state, and national fire, electrical, and safety regulations.
2 307427
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and result in a fire or explosion and serious injury.
D Ground the equipment and the object being sprayed. Refer to Grounding the System on page 5.
D If there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing/dispensing immediately. Do not use the equipment until you identify and correct the problem.
D Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid be-
ing sprayed/dispensed.
D Keep the spray/dispense area free of debris, including solvent, rags, and gasoline.
D Electrically disconnect all equipment in the spray/dispense area.
D Extinguish all open flames or pilot lights in the spray/dispense area.
D Do not smoke in the spray/dispense area.
D Do not turn on or off any light switch in the spray/dispense area while operating or if fumes are
present.
D Do not operate a gasoline engine in the spray/dispense area.
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
inhaled, or swallowed.
D Know the specific hazards of the fluid you are using.
D Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
D Any additives to the air supply, such as oil or anti–freeze will be exhausted into the atmosphere.
D Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers.
D Keep clear of all moving parts when starting or operating the pump.
D Before servicing the equipment, follow the Pressure Relief Procedure on page 8 to prevent the
equipment from starting unexpectedly.
307427 3
Pump Models
ETL LISTED PUMPS
The following pumps are ETL listed for light viscosity
paints, lacquers, varnishes, thinners, solvents when
installed in accordance with NFPA (National Fire
Protection Association) Standards No. 30, Flammable
and Combustible Liquids Code, and No. 33 Spray
Finishing Using Flammable Materials. The ETL listed
pumps have been evaluated using ASTM Reference
Fuels A, C, H, I, and IRM No. 3 Oil and that any fluid
used in these pumps should be reviewed against these
fluids to determine suitability. The carbon steel pumps
are for non-corrosive fluids, and the stainless steel
pumps are for corrosives.
Stubby Pumps
Model
No.
**226943
Series B
*226944
Series B
*226945
Series B
Displacement
Pump No. Description
215956
Series C
215957
Series C
215958
Series B
Carbon Steel,
Leather Packings
Carbon Steel,
Polyethylene
Packings
Stainless Steel,
Polyethylene
Packings
Parts
Pages
14, 18
14, 19
15, 28
NON-LISTED PUMPS
These pumps are for non-corrosive light viscosity fluids
such as anti-freeze, windshield washer solvent, ATF,
motor oil, and hydraulic oil.
Stubby Pumps
Model
No.
226948
Series B
226952
Series B
Bung-Mounted Drum Length Pumps
Model
No.
226947
Series B
226951{
Series B
226953
Series B
{ Model 226951 has a suction tube that can be extended 457 mm (18 in.). Non-extended pump length is
724 mm (28.5 in.). Fully extended pump length is 1180
mm (46.4 in.).
Displacement
Pump No. Description
218114
Series A
220439
Series A
Displacement
Pump No. Description
218113
Series A
218116
Series A
220440
Series A
Carbon Steel,
Rubber Packings
Stainless Steel,
Rubber Packings
Carbon Steel,
Rubber Packings
Carbon Steel,
Rubber Packings
Stainless Steel,
Rubber Packings
Parts
Pages
14, 24
15, 34
Parts
Pages
12, 24
16, 25
13, 33
Bung-Mounted Drum Length Pumps
Model
No.
**226940
Series B
**226941
Series B
**226942
Series B
686445
Series A}
} Model 686445 includes a spout, part no. 206265.
*This model is
**This model is
4 307427
Displacement
Pump No. Description
215953
Series D
215954
Series D
215955
Series B
215954
Series D
II 2 G T6
Carbon Steel,
Leather Packings
Carbon Steel,
Polyethylene
Packings
Stainless Steel,
Polyethylene
Packings
Carbon Steel,
Polyethylene
Packings
certified.
II 1/2 G T6
ITS03ATEX11227
Parts
Pages
12, 18
12, 19
13, 27
12, 19
certified.
NON-LISTED PUMPS
These pumps are for general fluid transfer applications.
Stubby Pumps
Model
No.
*237130
Series A
*237131
Series A
*237132
Series A
Bung-Mounted Drum Length Pumps
Model
No.
**237133
Series A
**237134
Series A
**237129
Series A
Displacement
Pump No. Description
237254
Series A
237255
Series A
237256
Series A
Displacement
Pump No. Description
215953
Series D
237449
Series A
237253
Series A
Carbon Steel,
Leather Packings
Carbon Steel,
PTFE Packings
Stainless Steel,
PTFE Packings
Carbon Steel,
Leather Packings
Carbon Steel,
PTFE Packings
Stainless Steel,
PTFE Packings
Parts
Pages
14, 20
14, 22
15, 31
Parts
Pages
12, 18
12, 21
13, 30
Installation
General Information
D The Typical Installation shown in Fig. 2 is only a
guide for selecting and installing system components. Contact your Graco distributor for assistance
in planning a system to suit your needs.
D Always use Genuine Graco Parts and Accessories.
D Reference numbers and letters in parentheses refer
to the callouts in the figures and the parts lists on
pages 12–34.
D For ETL listed pumps. All pipe joints are to be
made tight with ETL listed gasoline–resistant pipe
compound.
Grounding the System
WARNING
FIRE AND EXPLOSION HAZARD
This pump must be grounded. Before
operating the pump, ground the system
as explained below. Also read the section FIRE AND EXPLOSION HAZARD
on page 3.
To reduce the risk of static sparking, ground the pump
and all other equipment used or located in the pumping
area. Check your local electrical code for detailed
grounding instructions for your area and type of equipment. Ground all of this equipment.
1. ETL–Listed Pumps: Use a ground wire, connector,
and clamp. See Fig. 1. Loosen screw (X). Insert
one exposed end of a 12 ga (1.5 mm2) minimum
ground wire (Y) through the eye of the ground
terminal connector (W) and tighten screw (X)
securely. Connect the other end of the wire to a
true earth ground. Order Part No. 237569 Ground
Wire and Clamp.
2. Non ETL–Listed Pumps: See Fig. 1. Remove the
ground screw (Z). Fasten the ground connector
(W) onto the pump with the ground screw (Z) and
tighten securely. Loosen screw (X). Insert one
exposed end of a 12 ga (1.5 mm2) minimum
ground wire (Y) through the eye of the ground
terminal connector (W) and tighten screw (X)
securely. Connect the other end of the wire to a
true earth ground. Order Part No. 222011 Ground
Connector/Wire and Clamp.
W
Z
Y
X
Fig. 1
3. Air and fluid hoses: use only electrically conductive
hoses.
4. Air compressor: according to manufacturer’s
recommendations.
5. Dispensing valve: grounding is obtained through
connection to a properly grounded fluid hose and
pump.
6. Fluid supply container: according to local code.
7. Object being sprayed: according to local code.
8. All solvent pails used when flushing, according to
local code. Use only metal pails, which are conductive. Do not place the pail on a non-conductive
surface, such as paper or cardboard, which interrupts the grounding continuity.
TI1052
307427 5
Installation
E
DF
K
JL
Model 226951 only
DCC
EJ L
M
G
13 mm (0.5”)
H
C
A
B
C
KEY
A Vent Plug
B Bung Adapter
C Air Line Lubricator
D Bleed-type Master Air Valve
E Air Line Filter
F Grounded Air Hose
G Fluid Drain Valve
H Fluid Outlet
J Pin Fitting
K Air Control Valve
(All Models except 226951)
L Air Line Coupler
M Grounded Fluid Hose
CC Air Regulator Kit
(Model 226951 only)
Fig. 2
Mounting the Pump
Always rigidly mount the pump to suit the type of installation planned. Graco mounting accessories are
shown in the Accessories section. With 200 liter (55
gallon) drum length pumps, screw the bung adapter
(B) tightly into the bung hole of the drum and adjust to
hold the pump 13 mm (0.5 in.) off the bottom of the
drum. Loosen the vent plug (A) to prevent formation of
a vacuum in the drum. Stubby pumps may be mounted
on a wall or on the side of a drum with a clamp. Drum
pumps can also be mounted to the side of a drum.
03762
NOTE: Refer to Dimensions on page 37 for pump
dimensions, and air inlet and fluid outlet sizes.
6 307427
Installation
System Accessories
Refer to Fig. 2 and the Accessories section.
NOTE: To ensure maximum pump performance, be
sure that all accessories used are properly sized to
meet your system’s requirements.
Most models are supplied with a needle-type air control valve (K) at the pump air inlet. Model 226951 is
equipped with an air regulator kit (CC) instead (see
Fig. 3). All models are supplied with an air line quick
disconnect coupler (L) to connect the air line to the
pump and accessories.
WARNING
A bleed-type master air valve (D) and a fluid drain
valve (G) are required in your system, to help reduce the risk of serious injury, including splashing
fluid in the eyes or on the skin, and injury from
moving parts if you are adjusting or repairing the
pump.
Model 226951 Only
Using moderate force, extend the pump suction tube,
insert the pump into the drum or tank bung hole, and
screw the bung adapter (B) tightly into the bung hole.
Lift the pump about 13 mm (0.5 in.) and tighten the
bung adapter (B) screw to hold the pump. Loosen the
vent plug (A). Refer to Fig. 2.
CAUTION
To prevent damaging the o-ring seals inside the suction tube, do not use excessive force when extending
the suction tube.
All Other Models
Refer to Fig. 2 and to the mounting accessories shown
on page 35 for pump mounting methods.
Model
226951
Shown
The bleed-type master air valve (D) relieves air
trapped between this valve and the pump after the
pump is shut off. Trapped air can cause the pump
to cycle unexpectedly and result in serious injury,
including amputation. Locate the valve close to the
pump.
The fluid drain valve (G) helps relieve pressure in
the displacement pump, hose, and dispensing
valve when shutting off the pump. Actuating the
dispensing valve to relieve pressure may not be
sufficient, especially if there is a clog in the hose or
the dispensing valve.
For automatic air motor lubrication, install an air line
lubricator (C) downstream from the air regulator (if
supplied) and all other accessories. Install a bleed-type
master air valve (D) close to the pump. Next, install the
air regulator (CC), if supplied. Install an air line filter (E)
upstream from all other accessories, to remove harmful dirt and moisture from the compressed air supply.
Using a suitable adapter, install the male disconnect
pin fitting (J) in the air filter inlet. Install the air line
quick disconnect coupler (L) on the air hose (F), but do
not connect it to the pin fitting yet.
CC
JL
B
Connect an electrically conductive fluid hose (M) to the
3/4 npt(f) fluid outlet.
03763
Fig. 3
307427 7
Operation
Pressure Relief Procedure
WARNING
PRESSURIZED EQUIPMENT HAZARD
The system pressure must be manually relieved to
prevent the system from starting or spraying accidentally. To reduce the risk of an injury from accidental spray from the gun, splashing fluid, or
moving parts, follow the Pressure Relief Proce-
dure whenever you:
D are instructed to relieve the pressure,
D stop spraying,
D check or service any of the system equipment,
D or install or clean the spray nozzle.
1. Shut off the air to the pump.
2. Close the bleed-type master air valve (required in
your system).
3. Hold a metal part of the dispensing valve firmly to
the side of a grounded metal pail, and trigger the
valve to relieve pressure.
4. Open the fluid drain valve (required in your system) to relieve all fluid pressure, having a container ready to catch the drainage.
5. Leave the drain valve open until you are ready to
dispense again.
Cycle the pump slowly for at least 5 minutes, then stop
and disconnect the air hose. Push up on the ball of the
intake valve (N) to drain the lower part of the pump.
See Fig. 4. Turn the pump over to drain the upper part
of the pump.
N
03765
Fig. 4
Starting and Adjusting the Pump
With the air valve (K) or regulator (CC) closed, turn on
the air supply and connect the air line coupler (L). See
Figs. 3 or 5. Make sure all dispensing valves are open.
Slowly open the air valve (K) or regulator (CC) until the
pump cycles 5 to 20 cycles per minute. The pump itself only takes a few strokes to prime. In a large system, however, the pump may have to be cycled for
several minutes to fill all the lines. Once the entire system is primed, use the air valve or regulator to control
pump speed and cycle rate; always use the lowest
pressure necessary to get the desired results.
If you suspect that the nozzle or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
hose end coupling and relieve pressure gradually, then
loosen completely. Now clear the nozzle or hose.
Flush the Pump Before Using
The pump was tested in lightweight oil, which was left
in to protect pump parts. To prevent contamination of
the fluid you are pumping, flush the pump with a compatible solvent before using it.
To flush the pump, connect a short hose to the pump
outlet, insert the pump intake into a pail of compatible
solvent, direct the hose into a pail, and start the pump
as explained at right.
When used for transfer and supply operations with no
dispensing valve, the pump will run whenever air is
supplied.
Pump Shutdown
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
1. Disconnect the air line coupler (L).
2. Relieve the pressure.
8 307427
Maintenance
Fill the wet-cup (P) 1/2 full of Graco Throat Seal Liquid
(TSL) or compatible solvent and keep it 1/2 full to keep
fluid from drying on the displacement rod and damaging pump throat packings. See Fig. 5.
WARNING
Do not attempt to adjust the packing nut with the
pump operating.
Lubricate the throat packings frequently when you are
pumping a non-lubricating fluid, or are shutting down
for more than a few days. Some pumps have a grease
fitting (DD) for this purpose. See Fig. 5.
The accessory air line lubricator (C) provides automatic air motor lubrication. To manually lubricate the motor, disconnect the air line at the air motor inlet, put
about 15 drops of lightweight oil in the inlet, reconnect
the air line and turn on the air to blow oil into the motor.
Never allow the pump to run dry of fluid being pumped.
A dry pump will quickly accelerate to a high speed,
possibly damaging itself. If your pump accelerates
quickly, or is running too fast, stop it immediately and
check the fluid supply. If the supply container is empty
and air has been pumped into the lines, prime the
pump and lines with fluid, or flush and leave filled with
compatible solvent. Be sure to eliminate all air from the
fluid system.
Periodically, check the tightness of the packing nut (P).
Relieve the pressure, then tighten enough to prevent
leakage; no tighter. See Fig. 5. If the leakage can not
be stopped, change the packings to prevent exposure
to the fluid being pumped.
L
J
K
P
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Fig. 5
H
DD
03764B
307427 9
Troubleshooting
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
1. Relieve the pressure.
2. Check all other possible remedies before disassembling the pump.
PROBLEM
The pump fails to operate. Dirty or worn air motor. Clean, service; see the separate motor
The pump operates, but the output
is low on both strokes.
The pump operates, but the output
is low on the downstroke.
The pump operates, but the output
is low on the upstroke.
Erratic or accelerated operation. Exhausted fluid supply. Refill the fluid supply and reprime the
CAUSE SOLUTION
manual 307456.
Inadequate air supply or restricted
lines.
Closed or clogged air valves. Open or clear the valves.
Clogged fluid hose or valve. Clear the hose or valves.
Worn or damaged valves or seals. Service the valves or seals.
Clogged fluid hose or valve. Clear the hose or valves.
Exhausted fluid supply. Refill the fluid supply and reprime the
Worn or damaged valves or seals. Service the valves or seals.
Held open or worn intake valve. Clear or service the valve.
Worn or damaged valves or seals. Service the valves or seals.
Held open or worn piston valve. Clear or service the valve.
Worn or damaged valves or seals. Service the valves or seals.
Clean lines or increase the air supply
(see Technical Data).
pump.
pump.
Broken air motor compression spring. Replace the spring.
10 307427
Pump Service
Disconnecting the Air Motor
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
1. Flush the pump.
2. Relieve the pressure. Remove the pump from its
mounting.
115
103
3
3. See Fig. 6. Unscrew the tie rod locknuts (103).
4. Unscrew and remove the screw (105) and barrel
(104).
5. Raise the air motor (115) away from the displacement pump (114). Unscrew the displacement rod
(15) from the air motor connecting rod (S).
6. To order pump parts, refer to the parts lists on
pages 12–16. Refer to pages 17–34 for displacement pump service and parts information. Refer to
manual 307456 for air motor service and parts information.
Reconnecting the Air Motor
1. When reconnecting the air motor, use lithium base
grease on the threads of the displacement rod
(15). Make sure the o-ring (14) is in place on the
rod.
2. Insert the muffler (T) into the air motor connecting
rod (S) as shown in Fig. 6.
105
106
2
14
15
114
S
104
T
1
3. Tighten the displacement rod (15) into the air motor connecting rod hand tight, and install the barrel
and screw set (104 and 105).
4. Apply thread sealant to the threads of the tie rods
(106). To ensure proper alignment, first thread the
tie rod locknuts (106) loosely onto the tie rods,
then torque evenly to 15 NSm (8 ft–lb).
NOTE: Removing the muffler (T) will increase both
pump flow rate and exhaust noise.
5. Reconnect the groundwire if it was disconnected
during service.
Fig. 6
Grease the threads.
1
Apply thread sealant.
2
Torque evenly to
3
15 NSm (8 ft–lb).
03766B
307427 11
Bung Mount Drum-Length Pumps,
Carbon Steel Models
Pump Parts
Model 226940, Series B, leather packed
Model 226941, Series B, polyethylene packed
Model 226947, Series B, rubber packed
Model 237133, Series A, leather packed
Model 237134, Series A, PTFE packed
Model 686445, Series A, polyethylene packed, with
spout
Ref.
No. Part No. Description Qty.
103 104541 NUT, lock; M8; w/nylon insert 3
104n 15B249 PIN, barrel 1
105n 15B250 SCREW 1
106 177171 TIE ROD 3
107 190165 FITTING, air line; for Models
237133 and 237134 only 1
169969 FITTING, air line
for all other models 1
108 206264 NEEDLE VALVE ASSY
Includes items 109–112, 116, 117 1
109n 157628 . PACKING, o-ring; nitrile rubber 1
110 165722 . BODY 1
111 166531 . RING, friction washer 1
112 166529 . NEEDLE 1
113 190164 COUPLER, air line; for Models
237133 and 237134 only 1
114558 COUPLER, air line
for all other models 1
114 215953 DISPLACEMENT PUMP, for
Models 226940 and 237133;
see page 18 1
215954 DISPLACEMENT PUMP
for Model 226941; see page 19 1
237449 DISPLACEMENT PUMP
for Model 237134; see page 21 1
218113 DISPLACEMENT PUMP
for Model 226947; see page 24 1
115 223099 AIR MOTOR KIT
See instruction manual 307456 1
116 166532 NUT, packing 1
117 164698 KNOB, adjusting 1
118 206265 SPOUT; Model 686445 only
(not shown) 1
Model 226940 Shown
115
103
105
106
104
114
113
107
108 (Includes items
109–112, 116, 117;
see detail below.)
110
112
116
111
109
117
ti12378A
n Keep these spare parts on hand to reduce down
time.
12 307427
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