Graco PRESIDENT HYDRA-CAT 231657 Operation manual

Instructions – Parts List
GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441
Copyright 1993, Graco Inc. is registered to I.S. EN ISO 9001
PRESIDENT HYDRA-CATrFIXED RATIO
Proportioning Pumps
3000 psi (21 MPa, 210 bar) Maximum Working Pressure
Two or Three Displacement Pump Models in Various Mix Ratios,
Pressure Ratios, and Flow Volume
Available as Bare Pumps, or as Wall-Mounted* or Free-Standing
Models
*Includes Mixing Manifolds, Automatic Pressure Relief Valves, Check Valves, Pressure Gauges, and
Regulators.
For models that are certified and approved
see pages 6 and 7.
308224E
Read warnings and instructions.
See page 2 for Table of Contents and
page 6 for List of Models.
02884A
Parts

3082242
Table of Contents
Symbols 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Models 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Installation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation – Optional Fluid Heaters 13. . . . . . . . . . . . . .
Installation – Optional Solvent Pump 15. . . . . . . . . . . . .
Flushing 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shutdown and Care of the System 21. . . . . . . . . . . . . . .
Troubleshooting 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service – Displacement Pump 24. . . . . . . . . . . . . . . . . .
Parts – Bare, Two Pumps 26. . . . . . . . . . . . . . . . . . . . . .
Parts – Bare, Three Pumps 28. . . . . . . . . . . . . . . . . . . . .
Parts – Wall Mount, Two Pumps 30. . . . . . . . . . . . . . . . .
Parts – Wall Mount, Three Pumps 32. . . . . . . . . . . . . . .
Parts – Stand Mount, Two Pumps 34. . . . . . . . . . . . . . .
Parts – Stand Mount, Three Pumps 36. . . . . . . . . . . . . .
Accessories 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Hole Layout for Air Motor 42. . . . . . . . . . . . . .
Technical Data 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Standard Warranty 44. . . . . . . . . . . . . . . . . . . . . .
Graco Information 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARNING
Plural Component Materials Hazard
Graco, Inc. does not manufacture or supply any of the reactive chemical materials that may be used in this equip-
ment and is not responsible for their effects. Because of the vast number of chemicals that could be used and
their varying chemical reactions, before using this equipment, the buyer and the user should determine all facts
relating to the materials used, including any of the potential hazards involved. Particular inquiry and investigation
should be made into the potential dangers relating to toxic fumes, fires, explosions, reaction times, and exposure
of human beings to the individual components or their resultant mixtures. Graco assumes no responsibility for
loss, damage, expense, or claims for bodily injury or property damage, direct or consequential, arising from the
use of such chemical components.

308224 3
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
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 genuine Graco parts and accessories.
DCheck equipment daily. Repair or replace worn or damaged parts immediately.
DDo 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.
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.
DHandle hoses carefully. Do not pull on hoses to move equipment.
DRoute hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 66_C (150_F) or below –40_C (–40_F).
DWear hearing protection when operating this equipment.
DDo not move or lift pressurized equipment.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.

3082244
WARNING
INJECTION HAZARD
Spray from the valve, leaks or ruptured components can inject fluid into your body and cause ex-
tremely serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can
also cause serious injury.
DFluid injected into the skin is a serious injury. The injury may look like just a cut, but it is a serious
injury. Get immediate medical attention.
DDo not point the valve at anyone or at any part of the body.
DDo not put your hand or fingers over the valve tip.
DDo not stop or deflect leaks with your hand, body, glove or rag.
DDo not “blow back” fluid; this is not an air spray system.
DAlways have the tip guard and the trigger guard on the valve when spraying.
DBe sure the valve trigger safety operates before dispensing.
DLock the valve trigger safety when you stop dispensing.
DFollow the Pressure Relief Procedure on page 21 if the spray tip clogs and before cleaning,
checking or servicing the equipment.
DTighten all fluid connections before operating the equipment.
DCheck the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.
Permanently coupled hoses cannot be repaired; replace the entire hose.
MOVING PARTS HAZARD
Moving parts, such as the air motor piston, can pinch or amputate your fingers.
DKeep clear of all moving parts when starting or operating the pump.
DKeep hands and fingers away from the piston during operation and whenever the pump is charged
with air.
DBefore checking or servicing the equipment, follow the Pressure Relief Procedure on page 21 to
prevent the equipment from starting unexpectedly.

308224 5
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and re-
sult in a fire or explosion and serious injury.
DGround the equipment and the object being sprayed. Refer to Ground the Pumps on page 10.
DIf there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing 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 sprayed.
DKeep the spray area free of debris, including solvent, rags, and gasoline.
DBefore operating this equipment, electrically disconnect all equipment in the spray area.
DBefore operating this equipment, extinguish all open flames or pilot lights in the spray area.
DDo not smoke in the spray area.
DDo not turn on or off any light switch in the spray area while spraying or while operating if fumes
are present.
DDo not operate a gasoline engine in the spray 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.
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.

3082246
List of Models
Pressure and Ratio Ratings for President Pumps
WARNING
To reduce the risk of over pressurizing a component, which can result in an explosion and serious injury, never
operate the system at a working pressure higher than the lowest rated component in the system. All fluid side
components such as dispensing valves, regulators, and hoses must have a working pressure equal to or greater
than the pressure given in Column B for each pump model.
Column A gives the maximum fluid pressure developed at 100 psi (0.7 MPa, 7 bar) of incoming air pressure.
Column B gives the minimum working pressure required for all system components, based on the automatic
relief valve settings. Components included by Graco with the models listed meet or exceed this requirement.
Models with Two Displacement Pumps
A B
Model No.
Maximum Pump
Fluid Pressure
at 100 psi (7 bar) Air
Minimum
Component
Working Pressure
Normal
Pressure
Ratio
Nominal Flow
Volume
@ 40 cpm
Mix Ratio Bare Wall Stand psi bar psi bar
Ratio
(Fluid to Air) gpm lpm
1:1 231643** 231593** 231618** 1280 89 1800 124 12.80 1.5 5.7
1:1 231644 1601 112 1800 124 16.01 1.2 4.5
1:1 231645** 231595** 1921 135 2300 159 19.21 1.0 3.8
1:1 231646** 2561 179 2900 200 25.61 0.75 2.8
** CE approved and certified.

308224 7
List of Models
Models with Three Displacement Pumps
A B
Model No.
Maximum Pump
Fluid Pressure
at 100 psi (7 bar) Air
Minimum
Component
Working Pressure
Normal
Pressure
Ratio
Nominal Flow
Volume
@ 40 cpm
Mix Ratio Bare Wall Stand psi bar psi bar
Ratio
(Fluid to Air) gpm lpm
2:1 231657** 231607** 231632** 1280 88 1800 124 12.80 1.50 88
4:1 231663** 231613** 231638** 1024 71 1150 79 10.24 1.87 71
**CE approved and certified

3082248
Typical Installation
About the Typical Installations
These pumps are designed to be part of a Hydra-Cat
dispensing system that will proportion, mix, and
dispense two-component fluids. The typical installa-
tions shown below and on page 9 are only guidelines
to setting up a complete proportioning system. For
clarity, various components are shown in the correct
order but may not be shown in exactly the position of
the installed system. For assistance in designing your
system, contact your Graco distributor.
NOTE: When pressure feeding the proportioning
pump, mount fluid pressure gauges (J) at the propor-
tioning pump inlets to monitor proper adjustment of the
feed pump pressures. Never exceed 25% of the
Hydra-Cat pump outbound fluid pressure on the feed
supply.
Light Viscosity System
Two Displacement Pumps,
5:1 Ratio Feed Pumps
1See note above
Connect to drain bottle.
See Fig. 5, page 11
2
KEY
A Bleed-type master
air valve
B Air filter
C Air lubricator
D Pump runaway valve
E Pump air regulator
F Feed pump
G Ground wire
H Proportioning pump
J Fluid pressure gauge
K Check valve
L Automatic pressure relief
valve
M Fluid filter
N Mixer manifold
P Fluid drain valve
Q Fluid shutoff valve
R Static mixer
S Dispense valve
T Fluid regulator
U Solvent pump
V Fluid strainer
* Included with wall or stand models
Fig. 1
D
BA
C
FG
A
E
2
HJ*K* L*
M
N*
P*
Q
R
Q*
K
S
M
J*
T
Q*
A*
E*
V*
U
1
02885
RES
HARD
RES
HARD
HARDENER RESIN

308224 9
Typical Installation
About the Typical Installations
These pumps are designed to be part of a Hydra-Cat
dispensing system that will proportion, mix, and
dispense two-component fluids. The typical installa-
tions shown below and on page 8 are only guidelines
to setting up a complete proportioning system. For
clarity, various components are shown in the correct
order but may not be shown in exactly the position of
the installed system. For assistance in designing your
system, contact your Graco distributor.
NOTE: When pressure feeding the proportioning
pump, mount fluid pressure gauges (J) at the propor-
tioning pump inlets to monitor proper adjustment of the
feed pump pressures. Never exceed 25% of the
Hydra-Cat pump outbound fluid pressure on the feed
supply.
Heavy Viscosity Heated System
Three Displacement Pumps,
10:1 Ratio Feed Pumps
1
2
See note above
Connect to drain bottle.
See Fig. 5, page 11
KEY
A Bleed-type master air valve
B Air filter
C Air lubricator
D Pump runaway valve
E Pump air regulator
F Feed pump
G Ground wire
H Proportioning pump
J Fluid pressure gauge
K Check valve
L Automatic pressure
relief valve
M Fluid filter
N Mixer manifold
P Fluid drain valve
Q Fluid shutoff valve
R Static mixer
S Dispense valve
T Fluid regulator
U Solvent pump
V Fluid strainer
W Fluid heater
X Supply manifold
* Included with wall or stand models
Fig. 2 02886
D
BA
C
FG
A
E
2
HJ* K* L* M
N*
P*
Q
R
Q*
K
S
M
J*
T
Q*
A*
E*
V*
U
1
W
X
2

30822410
Installation
Bare Pumps
Bare pumps are available for those installations which
require a highly customized system. For a safe and
efficient system, Graco recommends that the air and
fluid components supplied with the Wall Mount and
Cart Mount models also be used in customized
systems. Refer to the Parts Drawings on pages 26–37
for part numbers. In addition, the accessories shown in
the Typical Installation drawings and discussed in the
following pages of this manual should be used.
Be sure all accessories are sized properly for the air
and fluid requirements of your system.
Read all instructions in the Installation section for
further details.
NOTES:
1. Models with three displacement pumps always use
the two outer displacement pumps to supply the
resin and the middle displacement pump to supply
the hardener.
1. These pumps always use the two outer displace-
ment pumps to supply the resin and the middle
displacement pump to supply the hardener.
2. Label all pumps, hoses, fluid regulators, etc. to
indicate whether they are for the resin side or
hardener side of the system.
Mounting the Pump
Mount the pump to suit your installation. The bare
pump can be mounted on a wall bracket or on a cart.
See the Mounting Hole Layout on page 42. The Presi-
dent pump and accessories weigh approximately 65 lb
(30 kg). The pump stand and accessories weigh
approximately 55 lb (25 kg).
For a wall mount, be sure the bracket and wall are
strong enough to support the pump, accessories,
plumbing and stress caused by pump operation.
Locate the bracket about 5 ft (1.5 m) above the floor.
Ground the Pumps
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE AND EXPLOSION
HAZARD on page 5.
1. Loosen the grounding lug locknut (BB) and washer
(AA).
2. Insert one end of a 14 ga (1.5 mm@) minimum
ground wire (G) into the slot in lug (CC) and tight-
en the locknut securely. See Fig. 3.
3. Connect the other end of the ground wire to a true
earth ground. Order part number 237569 Ground-
ing Clamp and wire.
Fig. 3
G
BB
AA CC