Graco Husky 715 Operation manual

308573
Rev. S
First choice when
quality counts. t
04050
LISTED
Model No. 237311 and 238226 shown
INSTRUCTIONS–PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
ALUMINUM
Huskyt 715 Air-Operated
Diaphragm Pumps
50 psi (345 kPa, 3.4 bar) Maximum Fluid Working Pressure
50 psi (345 kPa, 3.4 bar) Maximum Air Input Pressure
Model No. 237311, Series D
Buna-N diaphragms and balls
Model No. 238226, Series D
Buna-N diaphragms and balls
Restricted air inlet to maximize pumping efficiency for
evacuation systems
Model No. 232106, Series D
Buna-N diaphragms and balls
Same as Model No. 238226, except air inlet and fluid
inlet and outlet ports face in the same direction to
facilitate wall mounting
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
ECOPYRIGHT 1995, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001

2 308573
Table of Contents
Symbols 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Hole Layouts 30. . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Charts
Pump Rate Decrease at Different Suction Lifts 31. . .
Model 237311 Performance Curves 32. . . . . . . . . . . .
Model 238226 and 232106 Performance Curves 34.
Graco Standard Warranty 36. . . . . . . . . . . . . . . . . . . . . .
Graco Phone Number 36. . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
Caution Symbol
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.
DThis equipment is for professional use only.
DRead all instruction manuals, tags, and labels before operating the equipment.
DUse the equipment only for its intended purpose. If you are not sure, call your Graco distributor.
DDo not alter or modify this equipment. Use only genuine Graco parts and accessories.
DCheck equipment daily. Repair or replace worn or damaged parts immediately.
DDo not exceed the maximum working pressure of the lowest rated component in your system. This
equipment has a 50 psi (345 kPa, 3.4 bar) maximum working pressure at 50 psi (345 kPa,
3.4 bar) maximum incoming air pressure.
DUse 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.
DDo not use 1,1,1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents in aluminum pumps. Such use could result in a serious chemical
reaction, with the possibility of explosion.
DDo not use hoses to pull equipment.
DRoute 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).
DDo not lift pressurized equipment.
DWear hearing protection when operating this equipment.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.

 
WARNING
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.
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. See Air Exhaust Ventilation on
page 9.
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 and bond the equipment. Refer to Grounding on page 4.
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. See Air Exhaust Ventilation on page 9.
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.

4 308573
Installation
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
This pump must be grounded. Before
operating the pump, ground the system
as explained below. Also read the sec-
tion FIRE OR EXPLOSION HAZARD on
page 3.
Check your system electrical continuity after the initial
installation, and then set up a regular schedule for
checking continuity to be sure proper grounding is
maintained.
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 and bonding instructions for your area and
type of equipment.
Ground and bond all of this equipment:
 Pump : attach a ground wire (Y) to the grounding
strip (111) with the screw (121), lockwasher (122)
and nut (123), as shown in Fig. 1, and per code.
Connect the clamp end of the ground wire to a true
earth ground. Order Part No. 222011 Ground Wire
and Clamp.
04051C
Fig. 1
Y
111
121
122
123
 Air and fluid hoses : use only electrically conductive
hoses.
 Air compressor : follow the manufacturer’s
recommendations.
 Suction device nozzle: must be bonded to metal
container from which it is suctioning by firm
metal-to-metal contact to a properly grounded
suction hose and pump.
 Piping, valves and fittings: use only electrically
conductive materials. Bond and ground per code.
 Solvent pails used when flushing : follow your 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.
 Waste storage tank: follow your local code.

 
Installation
Typical Installation Description
Fig. 2 shows a system for the fast evacuation of gear
oil from vehicles. One centrally-mounted Husky 715
pump can have suction line drops to up to four service
bays, when activated singly. Interchangeable, nylon
suction wands are available to fit most differentials.
One control valve at each bay remotely activates the
pump and quickly suctions the gear oil. This system
can also be used to remove waste oil from rolling
waste oil drain carts, using a high capacity wand.
Fig. 3 shows a system for the fast evacuation of waste
oil from rolling waste oil receivers, or for general fluid
transfer applications. In waste oil evacuation systems,
roll the receivers up to a centrally mounted Husky 715
pump. Couple a quick disconnect coupler to a mating
connector on the waste oil receiver. Turn on the pump
and the oil is quickly evacuated from the receiver and
sent to a waste oil storage tank.
General Information
The Typical Installations in Figs. 2 and 3 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.
Installation and use must be in accordance with the
Flammable and Combustible Liquids Code (NFPA
30) and Automotive and Marine Service Station
Code (NFPA 30A) and must comply with all local,
state and federal codes.
Use a compatible, liquid thread sealant on all male
threads. Tighten all connections firmly to avoid air
or fluid leaks.
Reference numbers and letters in parentheses refer
to the callouts in the Figures and the parts lists on
pages 27 to 29.
WARNING
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.
Read TOXIC FLUID HAZARD on page 3.
Use fluids and solvents which are compatible
with the equipment wetted parts. Refer to the
Technical Data section of all equipment manu-
als. Read the fluid and solvent manufacturer’s
warnings.
Tightening Screws Before First Use
After unpacking the pump and before using it for the
first time, check and retorque the external fasteners.
See the Service section for torque specifications.
After the first day of operation, check and retorque the
fasteners again. The recommended frequency for
retorquing fasteners varies with pump usage; a general
guideline is to retorque fasteners every two months.
Mountings
Be sure the mounting surface can support the
weight of the pump, hoses, and accessories, as
well as the stress caused during operation.
The Husky 715 Pump can be used in a variety of
installations. See Figs. 2 and 3 for examples.
Secure the pump with screws and nuts.