Graco Husky 307 Operation manual

ACETAL AND POLYPROPYLENE
Husky™307 Air–Operated
Diaphragm Pumps
100 psi (0.7 MPa, 7 bar) Maximum Fluid Working Pressure
100 psi (0.7 MPa, 7 bar) Maximum Air Input Pressure
*Model No. D31 Acetal Pumps, Series E
*Model No. D32 Polypropylene Pumps, Series E
*Model No. D3A Acetal BSPT Pumps, Series E
*Model No. D3B Polypropylene BSPT Pumps, Series E
* To determine the Model No. for your pump and for additional models, refer to the Pump Matrix
on page 26.
Patent No.
US 5,240,390
US 5,280,808
Instructions–Parts List
308553AF
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
01428B

2 308553
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service
Replacing the Air Valve 16. . . . . . . . . . . . . . . . . . . . . .
Repairing the Air Valve 18. . . . . . . . . . . . . . . . . . . . . .
Ball Check Valves 21. . . . . . . . . . . . . . . . . . . . . . . . . .
Diaphragm Repair 23. . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Matrix 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Additional Diaphragm Pumps 26. . . . . . . . . . . . . . . . . . .
Repair Kit Matrix 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque Sequence 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data and Performance Charts 33. . . . . . . . . .
Dimensions 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Warranties 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Information 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.
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 100 psi (0.7 MPa, 7 bar) maximum working pressure at 100 psi
(0.7 MPa, 7 bar) maximum incoming air pressure.
DUse fluids and solvents which 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.
DDo not kink or overbend hoses or 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.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.
WARNING
WARNING
INSTRUCTIONS

308553 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.
DKnow the specific hazards of the fluid you are using.
DStore hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
DAlways wear protective eyewear, gloves, clothing and respirator as recommended by the fluid
and solvent manufacturer.
DPipe 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 10.
DTo pump acids, always use a polypropylene pump. Take precautions to avoid acid or acid fumes
from contacting the pump housing exterior. Stainless steel parts will be damaged by exposure to
acid spills and fumes. Never use an acetal pump to pump acids.
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.
DGround the equipment. Refer to Grounding on page 5.
DNever use a polypropylene pump with non-conductive flammable fluids as specified by your local
fire protection code. Refer to Grounding on page 5 for additional information. Consult your fluid
supplier to determine the conductivity or resistivity of your fluid.
DIf there is any static sparking or you feel an electric shock while using this equipment, stop
pumping immediately. Do not use the equipment until you identify and correct the problem.
DProvide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being pumped.
DPipe 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 10.
DKeep the work area free of debris, including solvent, rags, and gasoline.
DElectrically disconnect all equipment in the work area.
DExtinguish all open flames or pilot lights in the work area.
DDo not smoke in the work area.
DDo not turn on or off any light switch in the work area while operating or if fumes are present.
DDo not operate a gasoline engine in the work area.
DKeep a fire extinguisher in the work area.
WARNING
WARNING

4 308553
Installation
General Information
DThe Typical Installations in Fig. 4 to Fig. 7 are only
guides for selecting and installing system compo-
nents. Contact your Graco distributor for assistance
in planning a system to suit your needs.
DAlways use Genuine Graco Parts and Accessories,
available from your Graco distributor. Refer to the
Product Data Sheet for the pump, Form No.
305528 (acetal pumps) or 305543 (polypropylene
pumps). If you supply your own accessories, be
sure they are adequately sized and pressure rated
for your system.
DUse a compatible, liquid thread sealant or PTFE
tape on all male threads. Tighten all connections
firmly to avoid air or fluid leaks. Do not over-
tighten plastic threads.
DReference numbers and letters in parentheses refer
to the callouts in the Figures and the parts lists on
pages 28 to 29.
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.
1. Read TOXIC FLUID HAZARD on page 3.
2. 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.
WARNING
Safe Operating Temperature
Minimum: 40_F (4.4_C); Maximum: 150_F (66_C).
Operating outside these temperature limits will
adversely affect the strength of the pump housing.
Certain chemicals may further reduce the operat-
ing temperature range. Consult engineering guides
for chemical compatibilities and temperature limits,
or contact your Graco distributor.
CAUTION
Tightening Threaded Fasteners Before
First Use
Before using the pump for the first time, check and
retorque all external fasteners. See Torque Se-
quence, page 32. After the first day of operation,
retorque the fasteners. Although pump use varies, a
general guideline is to retorque fasteners every two
months.
Mountings
DBe sure the mounting can support the weight of the
pump, hoses, and accessories, as well as the
stress caused during operation.
DThe Husky 307 Pump can be used in a variety of
installations, some of which are shown in
Fig. 4 to Fig. 7. Kits are available to adapt your
pump to your system. Refer to the Product Data
Sheet for the pump, Form No. 305528 (acetal
pumps) or 305543 (polypropylene pumps).
DFor all other mountings, be sure the pump is ade-
quately secured.
Dual Manifolds
Dual manifold kits are available to enable you to pump
two fluids simultaneously, or to mix two fluids in the
pump. Order Part No. 237211 for acetal pumps and
Part No. 237210 for polypropylene pumps.

308553 5
Installation
Grounding
FIRE AND EXPLOSION HAZARD
This pump must be grounded. Before
operating the pump, ground the system
as explained at right. Also read the sec-
tion FIRE AND EXPLOSION HAZARD on page
3.
The acetal pump contains stainless steel fibers,
which makes the wetted parts conductive.
Attaching the ground wire to the grounding strip
grounds the air motor and the wetted parts.
The polypropylene pump is 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. 4 through Fig. 7).
Never use a polypropylene 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/me-
ter (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-centimeters.
WARNING
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.
Ground all of this equipment:
DPump: Attach a ground wire (Y) to the grounding
strip (112) with the screw (28), lockwasher (29) and
nut (27), as shown in Fig. 1. Connect the clamp end
of the ground wire to a true earth ground. Order
Part No. 222011 Ground Wire and Clamp.
NOTE: When pumping conductive flammable fluids
with a polypropylene pump, always ground the fluid
system. See the WARNING at left. Fig. 4 through
Fig. 7 show recommended methods of grounding
flammable fluid containers during filling.
Fig. 1
Y
112
27
29
28
01432B
DAir and fluid hoses: Use only electrically conductive
hoses.
DAir compressor: Follow the manufacturer’s recom-
mendations.
DSolvent 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.
DFluid supply container: Follow your local code.