Graco President B Series Datasheet

Instructions – Parts List
GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441
Copyright 1989, Graco Inc. is registered to I.S. EN ISO 9001
QUICK KNOCK DOWN PUMP
WITH NON–SPARKING CONSTRUCTION
Mining Pump
10:1 Ratio President Pump
1000 psi (7.0 MPa, 70 bar) Maximum Working Pressure
222167, Series B
307962J
WARNING
This pump is specially designed with non-sparking
construction. Interchange of any part for repair or
improvement of the pump, including the air motor,
must be with identical parts bearing the same part
numbers given on pages 13–15. To reduce the risk
of a fire or explosion and serious injury, the use of
any other parts is prohibited.
01605
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.

2 307962
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Motor Service 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement Pump Service 12. . . . . . . . . . . . . . . . . . . .
Parts 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Hole Layout 16. . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Information 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the corresponding
instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the cor-
responding 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 uncertain about usage, 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 system component. Refer to the
Technical Data on pages 17 for the maximum working pressure of this equipment.
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 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).
DWear hearing protection when operating this equipment.
DDo not lift pressurized equipment.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.

307962 3
WARNING
SKIN INJECTION HAZARD
Spray from the gun/valve, hose leaks, or ruptured components can inject fluid into your body and
cause extremely 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 might look like just a cut, but it is a serious injury. Get immediate surgi-
cal treatment.
DDo not point the gun/valve at anyone or at any part of the body.
DDo not put your hand or fingers over the spray tip/nozzle.
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 gun when spraying.
DCheck the gun diffuser operation weekly. Refer to the gun manual.
DBe sure the gun/valve trigger safety operates before spraying/dispensing.
DLock the gun/valve trigger safety when you stop spraying/dispensing.
DFollow the Pressure Relief Procedure on page 6 whenever you: are instructed to relieve pres-
sure; stop spraying/dispensing; clean, check, or service the equipment; and install or clean the
spray tip/nozzle.
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.
DUse only Graco approved hoses. Do not remove any spring guard that is used to help protect the
hose from rupture caused by kinks or bends near the couplings.
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.
DBefore servicing the equipment, follow the Pressure Relief Procedure on page 6 to prevent the
equipment from starting unexpectedly.

4 307962
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.
DGround the equipment and the object being sprayed. Refer to Grounding on page 5.
DIf 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.
DProvide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being sprayed/dispensed.
DKeep the spray/dispense area free of debris, including solvent, rags, and gasoline.
DElectrically disconnect all equipment in the spray/dispense area.
DExtinguish all open flames or pilot lights in the spray/dispense area.
DDo not smoke in the spray/dispense area.
DDo not turn on or off any light switch in the spray/dispense area while operating or if fumes are
present.
DDo not operate a gasoline engine in the spray/dispense area.
DThis pump is specifically designed with non-sparking construction. Interchange of any parts for
repair or improvement of the pump, including the air motor, must be with identical parts bearing the
same part numbers given on page 13–15. To reduce the risk of fire or explosion and serious injury,
the use of any other parts is prohibited.
DNever 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.
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.

307962 5
Installation
Grounding
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 4.
To reduce the risk of static arcing, ground the pump and
all other spray equipment used or located in the spray
area. CHECK your local electrical code for detailed
grounding instructions for your area and type of equip-
ment. BE SURE to ground all of this spray equipment:
1. Pump: loosen grounding lug locknut (A) and washer.
Insert one end of a 12 ga (1.5 mm2) minimum
groundwire (B) into slot in lug (C) and tighten locknut
securely. See Fig. 1. Connect the other end of the
wire to a true earth ground. Always check your local
code. Order Part No. 237569.
2. Air hoses: use only electrically conductive air hoses.
3. Fluid hoses: use only electrically conductive fluid
hoses.
4. Air compressor: follow the manufacturer’s recom-
mendations.
5. Dispensing valve: grounding is obtained through
connection to a properly grounded fluid hose and
pump.
6. Fluid supply container: according to your local code.
7. Object being sprayed: according to your local code.
8. All solvent pails used when flushing, according to lo-
cal code. Use only metal pails, which are conductive,
placed on a grounded surface. Do not place the pail
on a non–conductive surface, such as paper or card-
board, which interrupts the grounding continuity.
9. To maintain grounding continuity when flushing or re-
lieving pressure, always hold a metal part of the valve
firmly to the side of a grounded metal pail, then trig-
ger the valve.
Fig 1
B
A
C

6 307962
Operation
Pressure Relief Procedure
WARNING
SKIN INJECTION HAZARD
Fluid under high pressure can be in-
jected through the skin and cause
serious injury. To reduce the risk of an
injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you:
Dare instructed to relieve the pressure,
Dstop spraying,
Dcheck or service any of the system equipment,
Dor install or clean the spray tips.
1. Shut off the air to the pump. Disconnect the air
hose to be sure pressure is relieved in the air
motor.
2. If the pump or hose is not clogged and the hose is
not closed off, fluid pressure will be relieved.
3. If the pump or hose is clogged, wrap a heavy cloth
around the hose coupling at the pump outlet.
Slowly unscrew the hose to relieve pressure
gradually and reduce splashing.
4. If the clog does not appear to be in the hose,
clamp the pump outlet housing in a vise, and
hammer the intake valve lug nut to unscrew it. This
should relieve pressurized material trapped in the
pump.

307962 7
Operation
WARNING
To reduce the risk of static arcing which could
result in a fire or explosion and serious injury, use
only non-sparking tools if the pump is being as-
sembled or worked on in a hazardous atmosphere.
Pump Assembly
1. Remove the cotter pin from the connecting rod.
Screw the connecting rod into the air motor rod until
the pin holes align. Install the pin. Bend the ends of
the pin tightly and smoothly around the connecting
rod. This is to avoid scratching the cylinder during op-
eration. Push the displacement rod up and engage
the threads of the upper lug nut in the air motor base.
Hand tighten the lug nut and then secure by tapping
the lug nut with a hammer.
2. Connect a grounded air hose to the air inlet. Provide
an air regulator to control pump speed and pressure.
To help protect the air motor, provide an air motor lu-
bricator.
NOTE: If an air motor lubricator is not used, manually
lubricate the motor each day. Close the air
regulator. Remove the air inlet hose and squirt
several drops of SAE 10 motor oil into the air
inlet. Attach the hose and run the pump slowly
for a couple of minutes to distribute the oil.
3. Connect a suitable hose to the 3/4 npt fluid outlet.
Connect a dispensing valve to the hose.
4. Connect a ground wire to the pump grounding lug.
Connect the other end of the ground wire to known
ground. See Grounding on page 5.
Wet All Internal Parts of the Pump and Hose
A dry pump and hose draws moisture out of the material
being pumped, which contributes to pump clogs. To re-
duce clogging, flush the pump and hose with clean water
before priming it with material.
Regular Operation
1. Mix the material thoroughly to remove all lumps.
Pay particular attention to the corners and sides of
the mixing container.
2. Mount the pump in the mixing container.
NOTE: If the pump was flushed with water, direct the
hose into a waste container until all water is
displaced with material.
3. Supply air to the pump. Always open the air regulator
slowly and then increase pressure gradually until the
pump is running smoothly. Use the lowest pressure
necessary to give the desired results.
To Stop Dispensing
Shut off the air supply to the pump and relieve the pres-
sure.
AIR INLET
President: 1/2 npt
FLUID OUTLET
3/4 NPT
INTAKE VALVE LUG NUT
WEEP HOLE
one on each side
of motor
Fig 2
COTTER PIN
HOLES
UPPER LUG NUT
COUPLING

8 307962
Operation
If the Pump Will Not Be Used for Five
Minutes or Longer
1. Remove the pump from the mixing container. Turn
on the air and direct the material flow into the mixing
container. Flush the pump with clean water until thor-
oughly cleaned. Use the outlet hose to clean the out-
side of the pump.
NOTE: If material has leaked through the weep holes
on either side of the motor base, direct the out-
let hose into these holes and flush thoroughly.
2. Remove the outlet hose, and then turn the pump up-
side down to drain. This helps prevent rust.
If the Pump is Being Stored
Clean the pump thoroughly to reduce rust. Flush with wa-
ter and disassemble the pump if further cleaning is need-
ed. Turn the pump upside down to drain the water out.
Flush again with a rust inhibiting chemical.
If the Pump or Hose Clogs
WARNING
If the pump or the hose clogs, use extreme caution
to avoid splashing material in your eyes while
clearing the clog. Follow the procedure below.
1. Shut off the air supply to the motor.
2. Wrap a heavy cloth around the hose coupling at the
pump outlet. Slowly unscrew the hose to relieve
pressure gradually and reduce splashing.
3. If the clog does not appear to be in the hose, hammer
the intake valve lug nut to loosen it and then unscrew
it. This should help relieve pressurized material
trapped in the pump.
4. Clean the intake valve and reassemble it. Flush the
pump.
5. If the piston check valve is clogged, relieve pressure.
Remove the intake valve and then remove the air
motor. See page 10. Push the throat packing assem-
bly out of the pump cylinder. Clean the pump and re-
place the throat packing assembly. See page 12.
6. If the pump is still clogged, shut off the air to the
pump. Disassemble the pump and clean it thorough-
ly. See page 12.

307962 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 6.
Before servicing this equipment always make sure to
Relieve the Pressure.
Check all possible problems and solutions before
disassembling the pump.
Problem Cause Solution
Excess material leaks from the weep
holes in the base of the motor.
Worn throat packings Flush the weep holes when flushing
the pump. Replace the throat pack-
ings.
Pump doesn’t build pressure. Worn piston and/or throat packings Replace the packings.
Pump is clogged. Material has dried in the pump Flush pump more frequently; replace
packings as needed.
Material is too dry Add water.
Pump and hose not flushed with water
before pumping grout
Wet hose and pump with water before
pumping grout. See page 7.
Motor leaks air or stops Lack of lubrication Rebuild motor, and inject oil into air in-
let daily.
WARNING
This pump is specially designed with non-sparking
construction. Interchange of any part for repair or
improvement of the pump, including the air motor,
must be with identical parts bearing the same part
numbers given on pages 13–15. To reduce the risk
of a fire or explosion and serious injury, the use of
any other parts is prohibited.

10 307962
Air Motor Service
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 6.
WARNING
Never operate the pump with the air motor plates
removed. The air motor piston, located behind the
air motor plates, moves when air is supplied to the
motor. Moving parts can pinch or amputate your
fingers or other body parts.
WARNING
To reduce the risk of static arcing which could
result in a fire or explosion and serious injury, use
only non-sparking tools if the pump is being as-
sembled or worked on in a hazardous atmosphere.
NOTE: Reference letters in parentheses in the text re-
fer to the figure illustrations.
Restarting a Stalled Air Motor
1. Relieve the pressure. This usually reseats the air
transfer valves. Reconnect the air and turn it on.
2. If the air transfer valves do not reseat, screw the cap
nut (131) out of the cylinder (115), pull up on the trip
rod (101) and screw the cap nut back into the cylin-
der. See Fig 3.
Replacing the Throat Bearing
1. Relieve pressure.
2. Disconnect the displacement pump from the motor.
3. Remove the warning plate (128) from the motor
base. See Fig 3.
4. Use a 1/4 in. punch to unscrew the bearing (125).
See Fig 3.
5. Reassemble in the reverse order of disassembly. Be
sure the air motor plates are installed before operat-
ing the motor.
Repairing the Air Motor
CAUTION
To reduce the risk of damaging parts:
Use special pliers, Part No. 207579, when handling
the trip rod. Damage to the surface of the trip rod
can result in erratic air motor operation.
Always lift the cylinder straight up off the piston.
Never tilt the cylinder as it is being removed.
WARNING
Always keep fingers clear of the toggle assemblies
(B) to avoid pinching or amputating them. See Fig.
3.
1. Relieve the pressure.
2. Remove the displacement pump. See page 12.
3. From below the motor base (102), push up the piston
rod. Unscrew the cap nut (131) just until you can pull
up the cap nut and then grasp the trip rod (101) with
the special padded pliers. Remove the cap nut. See
Fig 3.
4. Remove the screws (105). Carefully pull the cylinder
straight up off of the piston. See Fig 3.
Fig 3
102
105
115
101
131
128
125
GRASP WITH
PADDED PLIERS