Graco D51 User manual

9246A
Husky 515
Husky 716
9065A
Instructions
Air-Operated
Diaphragm Pumps 308981ZBB
EN
For fluid transfer applications. For professional use only. Only models marked with (*) are
approved for use in European explosive atmosphere locations.
100 psi (0.7 MPa, 7 bar) Maximum Fluid Working Pressure
100 psi (0.7 MPa, 7 bar) Maximum Air Input Pressure
ACETAL*, POLYPROPYLENE, AND PVDF
Husky™ 515
Model No. D 5 1 _ _ _ Acetal NPT Pumps
Model No. D 5 2 _ _ _ Polypropylene Pumps
Model No. D 5 5 _ _ _ PVDF NPT Pumps
Model No. D 5 A _ _ _ Acetal BSPT Pumps
Model No. D 5 B _ _ _ Polypropylene BSPT Pumps
Model No. D 5 E _ _ _ PVDF BSPT Pumps
Model No. D 9 1 _ _ _ Acetal NPT Pumps
Model No. D 9 A _ _ _ Acetal BSPT Pumps
For Additional Models, see Table of Contents
ALUMINUM* AND STAINLESS STEEL*
Husky™ 716
Model No. D 4 D _ _ _ Stainless Steel BSPT Pumps, Remote
Model No. D 5 3 _ _ _ Aluminum NPT Pumps
Model No. D 5 4 _ _ _ Stainless Steel NPT Pumps
Model No. D 5 C _ _ _ Aluminum BSPT Pumps
Model No. D 5 D _ _ _ Stainless Steel BSPT Pumps
Model No. D 9 4 _ _ _ Stainless Steel NPT Pumps
Model No. D 9 D _ _ _ Stainless Steel BSPT Pumps
For Additional Models, see Table of Contents
*These models are certified:
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Refer to the Pump Matrix on page 23 to determine
the model number of your pump.
II 2 GD
Ex h IIC 66°C...135°C Gb
Ex h IIIC T135°C Db
ATEX T-code rating is dependent on the temperature
of the fluid being pumped. Fluid temperature is
limited by the materials of the pump interior wetted
parts. See Technical Data for the maximum fluid
operating temperature for your specific pump model.

2 308981
Table of Contents
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Husky 515 and Husky 716 Pump Matrix . . . . . . . 23
Husky 515 and Husky 716 Repair Kits . . . . . . . . . 25
Husky 515 and Husky 716 Common Parts . . . . . 26
Husky 716 Parts Drawing . . . . . . . . . . . . . . . . . . . 30
Torque Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Husky 515 Technical Data . . . . . . . . . . . . . . . . . . . 33
Husky 515 Dimensions . . . . . . . . . . . . . . . . . . . . . 34
Husky 716 Technical Data . . . . . . . . . . . . . . . . . . . 35
Reed Switch Technical Data . . . . . . . . . . . . . . . . . 36
Husky 716 Dimensions . . . . . . . . . . . . . . . . . . . . . 37
Husky 515 and 716 Performance Charts . . . . . . . 38
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 40
Symbols
Warning Symbol
Caution Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
CAUTION
This symbol alerts you to the possibility of
damage to or destruction of equipment if you do
not follow the instructions.
WARNING
INSTRUCTIONS
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
•This equipment is for professional use only.
•Read all instruction manuals, tags, and labels before operating the equipment.
•Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor.
•Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
•Check equipment daily. Repair or replace worn or damaged parts immediately.
•Do not exceed the maximum working pressure of the lowest rated component in your system. This
equipment has a 100 psi (0.7 MPa, 7 bar) maximum working pressure at 100 psi (0.7 MPa, 7
bar) maximum incoming air pressure.
•Use fluids and solvents that 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.
•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).
•Wear hearing protection when operating this equipment.
•Do not lift pressurized equipment.
•Do not kink or overbend hoses or use hoses to pull equipment.
•Comply with all applicable local, state, and national fire, electrical, and safety regulations.
•Do not use 1.1.1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents in pressurized aluminum equipment. Such use could result in a
chemical reaction, with the possibility of explosion.

308981 3
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.
•Know the specific hazards of the fluid you are using.
•Do not lift a pump under pressure. If dropped, the fluid section may rupture. Always follow the
•Pressure Relief Procedure on page 10 before lifting the pump.
•Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state, and national guidelines.
•Always wear protective eyewear, gloves, clothing, and respirator as recommended by the fluid
and solvent manufacturer.
•Pipe and dispose of the exhaust air safely, away from people, animals, and food handling areas.
If the diaphragm fails, the fluid is exhausted along with the air. Read Air Exhaust Ventilation on
page 6.
•Never use an acetal pump to pump acids. Take precautions to avoid acid or acid fumes from con-
tacting the pump housing exterior. Stainless steel parts will be damaged by exposure to acid spills
and fumes.
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.
•Ground the equipment. Refer to Grounding on page 8.
•Never use a polypropylene or PVDF pump with non-conductive flammable fluids as specified by
your local fire protection code. Refer to Grounding on page 8 for additional information. Consult
your fluid supplier to determine the conductivity or resistivity of your fluid.
•If there is any static sparking or you feel an electric shock while using this equipment, stop pump-
ing immediately. Do not use the equipment until you identify and correct the problem.
•Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being pumped.
•Pipe and dispose of the exhaust air safely, away from all sources of ignition. If the diaphragm fails,
the fluid is exhausted along with the air. Read Air Exhaust Ventilation on page 6.
•Keep the work area free of debris, including solvent, rags, and gasoline.
•Electrically disconnect all equipment in the work area.
•Extinguish all open flames or pilot lights in the work area.
•Do not smoke in the work area.
•Do not turn on or off any light switch in the work area while operating or if fumes are present.
•Do not operate a gasoline engine in the work area.
•Keep a fire extinguisher in the work area.
WARNING

4 308981
Installation
General Information
•The Typical Installations in Fig. 2 are only guides for
selecting and installing system components.
Contact your Graco distributor for assistance in
planning a system to suit your needs.
•Always use Genuine Graco Parts and Accessories.
•Use a compatible, liquid thread sealant on all male
threads. Tighten all connections firmly to avoid air
or fluid leaks.
Tightening Threaded Fasteners Before First
Use
Before using the pump for the first time, check and
retorque all external fasteners. See Torque Sequence,
page 32. After the first day of operation, retorque the
fasteners. Although pump use varies, a general guide-
line is to retorque fasteners every two months.
Toxic Fluid Hazard
Use fluids and solvents that are compatible with the
equipment wetted parts. Refer to the Technical Data
section of all equipment manuals. Read the fluid and
solvent manufacturer’s warnings.
Mountings
•These pumps can be used in a variety of
installations. Be sure the mounting surface can
support the weight of the pump, hoses, and
accessories, as well as the stress caused during
operation.
•Fig. 2 shows some installation examples. On all
installations, mount the pump using screws and
nuts.
•Prolonged exposure to UV radiation will degrade
natural polypropylene components of the pumps.
To prevent potential injury or equipment damage,
do not expose pump or the plastic components to
direct sunlight for prolonged periods.
Pumping High-Density Fluids
High density fluids may prevent the lighter non-metallic
check valve balls from seating properly, which reduces
pump performance significantly. Stainless steel balls
should be used for such applications.
Split Manifolds
Plastic Split Manifold Kits are available to enable you to
pump two fluids simultaneously or to mix two fluids in
the pump. To order a Split Manifold Kit, use the Part
No. from the list below:
241240 polypropylene; split inlet
241241 acetal; split inlet
241242 PVDF; split inlet
241243 polypropylene; split outlet
241244 acetal; split outlet
241245 PVDF; split outlet
Read TOXIC FLUID HAZARD on page
3.
CAUTION
Safe Operating Temperatures
Minimum (all pumps): 40°F (4°C)
Maximum
Acetal: 180°F (82°C)
Polypropylene: 150°F (66°C)
Aluminum, stainless steel, PVDF: 225°F (107°C)
These temperatures are based upon mechanical
stress only and may be significantly altered by pump-
ing certain chemicals. Consult engineering guides for
chemical compatibilities and temperature limits, or
contact your Graco distributor.

308981 5
Installation
Air Line
1. Install the air line accessories as shown in Fig. 2.
Mount these accessories on the wall or on a
bracket. Be sure the air line supplying the accesso-
ries is electrically conductive.
a. The fluid pressure can be controlled in either of
two ways. To control it on the air side, install an
air regulator (G). To control it on the fluid side,
install a fluid regulator (J) near the pump fluid
outlet (see Fig. 2).
b. Locate one bleed-type master air valve (B)
close to the pump and use it to relieve trapped
air. Read the WARNING above. Locate the
other master air valve (E) upstream from all air
line accessories and use it to isolate them
during cleaning and repair.
c. The air line filter (F) removes harmful dirt and
moisture from the compressed air supply.
2. Install an electrically conductive, flexible air hose (C)
between the accessories and the 1/4 npt(f) pump air
inlet. Use a minimum 1/4 in. (6.3 mm) ID air hose.
Screw an air line quick disconnect coupler (D) onto
the end of the air hose (C), and screw the mating fit-
ting into the pump air inlet snugly. Do not connect the
coupler (D) to the fitting yet.
Installation of Remote Pilot Air Lines
1. Refer to Parts Drawings. Connect air line to pump
as in preceding steps.
2. Connect 1/4 in. O.D. tubing to push type connectors
(16) on underside of pump.
NOTE: by replacing the push type connectors, other
sizes or types of fittings may be used. The new fittings
will require 1/8 in. npt threads.
3. Connect remaining ends of tubes to external air sig-
nal, such as Graco’s Cycleflo (P/N 195264) or Cycle-
flo II (P/N195265) controllers.
NOTE: the air pressure at the connectors must be at
least 30% of the air pressure to the air motor for the
pump to operate.
Fluid Suction Line
•For all pumps, use flexible fluid hoses.
•If using a conductive (acetal) pump, use conductive
hoses. If using a non-conductive pump, ground the
fluid system. Read Grounding on page 8. The fluid
inlet port is 1/2 in. or 3/4 in.
•At inlet fluid pressures greater than 15 psi (0.1 MPa, 1
bar), diaphragm life will be shortened.
Fluid Outlet Line
1. Use flexible, electrically conductive fluid hoses (K).
The pump fluid outlet is 1/2 in. or 3/4 in. Screw the
fluid fitting into the pump outlet snugly. Do not
overtighten.
2. Install a fluid regulator (J) at the pump fluid outlet to
control fluid pressure, if desired (see Fig. 2). See Air
Line, step 1a, for another method of controlling pres-
sure.
3. Install a fluid drain valve (H) near the fluid outlet. Read
the WARNING above.
WARNING
A bleed-type master air valve (B) is required in your
system to relieve air trapped between this valve and
the pump. See Fig. 2. Trapped air can cause the pump
to cycle unexpectedly, which could result in serious
injury, including splashing in the eyes or on the skin,
injury from moving parts, or contamination from haz-
ardous fluids.
CAUTION
The pump exhaust air may contain contaminants. Ven-
tilate to a remote area if the contaminants could affect
your fluid supply. Read Air Exhaust Ventilation on
page 6.
WARNING
A fluid drain valve (H) is required in your system to
relieve pressure in the hose if it is plugged. See Fig. 2.
The drain valve reduces the risk of serious injury,
including splashing in the eyes or on the skin, or con-
tamination from hazardous fluids when relieving pres-
sure. Install the valve close to the pump fluid outlet.

6 308981
Installation
Fluid Pressure Relief Valve
Fig. 1
Air Exhaust Ventilation
The air exhaust port is 3/8 npt(f). Do not restrict the air
exhaust port. Excessive exhaust restriction can cause
erratic pump operation.
See Venting Exhaust Air in Fig. 2. Exhaust to a remote
location as follows:
1. Remove the muffler (W) from the pump air exhaust
port.
2. Install an electrically conductive air exhaust hose (X)
and connect the muffler to the other end of the hose.
The minimum size for the air exhaust hose is 3/8 in.
(10 mm) ID. If a hose longer than 15 ft (4.57 m) is
required, use a larger diameter hose. Avoid sharp
bends or kinks in the hose.
3. Place a container (Z) at the end of the air exhaust line
to catch fluid in case a diaphragm ruptures. See Fig.
2.
CAUTION
Some systems may require installation of a pressure
relief valve at the pump outlet to prevent overpressur-
ization and rupture of the pump or hose. See Fig. 1.
Thermal expansion of fluid in the outlet line can cause
overpressurization. This can occur when using long
fluid lines exposed to sunlight or ambient heat, or
when pumping from a cool to a warm area (for exam-
ple, from an underground tank).
Overpressurization can also occur if the Husky pump
is being used to feed fluid to a piston pump, and the
intake valve of the piston pump does not close, caus-
ing fluid to back up in the outlet line.
1
2
1
2
3
3
9073A
Install valve between fluid inlet and outlet ports.
Connect fluid inlet line here.
Connect fluid outlet line here.
Be sure the system is properly ventilated for your type
of installation. You must vent the exhaust to a safe
place, away from people, animals, food handling
areas, and all sources of ignition when pumping flam-
mable or hazardous fluids.
Diaphragm failure will cause the fluid being pumped to
exhaust with the air. Place an appropriate container at
the end of the air exhaust line to catch the fluid. See
Fig. 2.
Read TOXIC FLUID HAZARD on
page 3.
Read FIRE AND EXPLOSION
HAZARD on page 3.

308981 7
Installation
Fig. 2
9074A
H
J
A
CDK
LM
N
Y
E
9075A
H
A
CD
K
L
Y
9076A
A
E
K
P
R
S
T
U
V
Y
H
C
D
F
G
B
F
W
X
Z
04054
G
9074A
H
J
A
CDK
LM
N
Y
E
9075A
H
A
CD
K
L
Y
9076A
A
E
K
P
R
S
T
U
V
Y
H
C
D
F
G
B
F
W
X
Z
04054
G
KEY
A Pump
B Bleed-type master air valve (required for pump)
C Electrically conductive air supply line
D Air line quick disconnect
E Master air valve (for accessories)
F Air line filter
G Pump air regulator
H Fluid drain valve (required)
J Fluid regulator (optional)
K Electrically conductive fluid supply hose
L Fluid suction line
M Underground storage tank
N Wall mounting bracket
Y Ground wire (required; see page 8 for
installation instructions)
ABOVE-GROUND TRANSFER INSTALLATION
55-GALLON BUNG PUMP INSTALLATION
KEY
A Pump
C Electrically conductive air supply line
D Air line quick disconnect
H Fluid drain valve (required)
K Electrically conductive fluid supply
hose
L Fluid suction line
Y Ground wire (required; see page 8 for
installation instructions)
AIR SPRAY INSTALLATION
KEY
A Pump
C Electrically conductive air line to pump
E Gun air line shutoff valve
F Air line filter
G Gun air regulator
H Fluid drain valve (required)
K Electrically conductive fluid supply hose
P Circulating valve
R Electrically conductive air line to gun
S Air spray gun
T Electrically conductive fluid return line
U 5-gallon pail
V Agitator
Y Ground wire (required; see page 8 for
installation instructions)
VENTING EXHAUST AIR
KEY
W Muffler
X Electrically Conductive Air Exhaust
Hose
Z Container for Remote Air Exhaust
All wetted and non-wetted pump parts
must be compatible with the fluid being
pumped.

8 308981
Installation
Grounding
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 equip-
ment.
NOTE: When pumping conductive flammable fluids
with a polypropylene or PVDF pump, always ground
the fluid system. See the WARNING above. Fig. 3
shows a recommended method of grounding flamma-
ble fluid containers during filling.
Ground all of this equipment:
•Pump: The metal pump has a grounding strip in
front of the center housing. The acetal pump has a
grounding screw on the top manifold. Connect the
non-clamp end of the ground wire to the grounding
strip or grounding screw, and connect the clamp
end of the ground wire to a true earth ground. To
order a ground wire and clamp, order Part No.
222011.
•Air and fluid hoses: Use only flexible, electrically
conductive hoses.
•Air compressor: Follow the manufacturer’s
recommendations.
•Solvent pails used when flushing: Follow the local
code. Use only grounded 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.
•Fluid supply container: Follow the local code.
Fig. 3
WARNING
FIRE AND EXPLOSION HAZARD
This pump must be grounded. Before oper-
ating the pump, ground the system as
explained below. Also read the section FIRE
AND EXPLOSION HAZARD on page 3.
The acetal Husky 515 pump contains stainless steel
fibers, which makes the wetted parts conductive.
Attaching the ground wire to the grounding screw
(106) grounds the wetted parts. See grounding screw
on page 25.
The metal Husky 716 pumps have a grounding strip
connecting the vee clamps (109). Attach a ground wire
to the grounding strip with the screw, lockwasher, and
nut as shown in the Grounding Detail on page 27.
The polypropylene and PVDF Husky 515 pumps are
not conductive.
When pumping conductive flammable fluids, always
ground the entire fluid system by making sure the fluid
system has an electrical path to a true earth ground
(see Fig. 3). Never use a polypropylene or PVDF pump
with non-conductive flammable fluids as specified by
your local fire protection code.
US Code (NFPA 77 Static Electricity) recommends a
conductivity greater than 50 x 10-12 Siemans/meter
(mhos/meter) over your operating temperature range
to reduce the hazard of fire. Consult your fluid supplier
to determine the conductivity or resistivity of your fluid.
The resistivity must be less than 2 x 1012 ohm-centi-
meters.
9079A
2
AH
S
T
Z
1
2
1
Y
Y
GROUNDING A PUMP
Hose must be conductive.
Dispense valve nozzle must be in contact with
container.
KEY
A Pump
H Fluid drain valve (required)
S Dispense valve
T Fluid drain line
Y Fluid section grounding via grounding strip or
grounding screw (required for metal and acetal pumps)
Z Container ground wire (required)

308981 9
Installation
Changing the Orientation of the Fluid Inlet
and Outlet Ports (Husky 515)
You can change the orientation of the fluid inlet and
outlet ports by repositioning the manifolds. For Husky
515, see Fig. 4. For Husky 716, see Fig. 5.
1. Relieve the pressure. See Pressure Relief
Procedure on page 11.
2. Remove the four manifold nuts (109) or bolts (105).
3. Turn the manifold to the desired position, reinstall the
nuts or bolts, and torque to 80 to 90 in-lb (9 to 10
NSm). See Torque Sequence, page 32.
NOTE: Make sure all manifold o-rings are positioned
correctly before you fasten the manifold. Manifold
o-rings (139) are shown in Fig. 8 and Fig. 9.
NOTE: Pumps with duckbill check valves are shipped
with the inlet manifold on top and the outlet manifold on
the bottom. See page 14 for details.
Fig. 4
f
Fig. 5
1
1
109
9065A
1109
Torque to 80 to 90 in-lb (9 to 10 NSm). See
Torque Sequence, page 32.
outlet
inlet
1
1105
9071A
1105
Torque to 80 to 90 in-lb (9 to 10 NSm). See
Torque Sequence, page 32.
outlet
inlet

10 308981
Install Reed Switch
1. Shut off air to pump and remove valve cover (A).
2. Remove lower carriage and replace with new car-
riage assembly (2), so magnet faces end of valve
chamber.
3. Replace valve cover. Torque to 80 to 100 in-lb
(9.0 to 13.6 N•m).
4. Screw reed switch (1) into one of two holes on under-
side of air motor until it bottoms out.
5. Attach the reed switch cable (1) to the system moni-
toring counts.
NOTE: The following steps will require that the pump
is operated with the targeted fluid, and at the mini-
mum operational speed, so that the reed switch
counting is properly calibrated.
6. Set the inlet air pressure to a minimum of 40 psi (2.76
bar). Observe that the air motor is functioning. If it is
not, increase the pressure until it does begin to oper-
ate.
7. While monitoring the reed switch output at the moni-
toring location, slowly turn the reed switch
counter-clockwise until a consistent pulse output is
observed.
8. Mark a vertical line on the threads of the reed switch
and a corresponding alignment mark on the body of
the air motor.
9. While monitoring the pulse output, slowly turn the
reed switch counter-clockwise until breaks in the
pulses are observed. Make a mark on the air motor
where the line on the threads of the reed switch is
located.
10. Rotate the reed switch clockwise until the line on the
threads is halfway between the two marks on the air
motor.
11. Tighten the lock nut on the reed switch against the air
motor. Do not overtighten.
A
2
1
5
4
Cable connector
Pins 1-3 unused