Graco President A Series Operation manual

Instructions – Parts List
GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441
Copyright 1997, Graco Inc. is registered to I.S. EN ISO 9001
3:1 Ratio PresidentRHeated
Circulation Package
Part No. 232090, Series A
With stainless steel pump, 239857 Supply Module, and 120V Viscon HP Heater
Package includes mounting hardware, air controls, back pressure regulator,
stainless steel fluid filter, elevator, back-geared agitator, and drum cover
300 psi (2.1 MPa, 21 bar)
Maximum Working Pressure
100 psi (0.7 MPa, 7 bar)
Maximum Air Inlet Pressure
308770F
Read warnings and instructions.
See page 2 for Table of Contents.
7759C
Parts

2 308770
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Hole Layouts 27. . . . . . . . . . . . . . . . . . . . . . . . .
Graco Standard Warranty 28. . . . . . . . . . . . . . . . . . . . . .
Graco Information 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 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 stated on the equipment or in the Technical Data
section 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.
DRoute hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 180_F (82_C) or below –40_F (–40_C).
DDo not touch the heater during operation; it is very hot.
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.

308770 3
WARNING
PRESSURIZED EQUIPMENT HAZARD
Spray from the gun, hose leaks, or ruptured components can splash fluid in the eyes or on the skin
and cause serious injury.
DDo not point the gun at anyone or at any part of the body.
DDo not stop or deflect leaks with your hand, body, glove, or rag.
DFollow the Pressure Relief Procedure on page 14 whenever you: are instructed to relieve pres-
sure; stop spraying; clean, check, or service the equipment; and install or clean the spray tip.
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, elevator, and agitator blades, can pinch or amputate your
fingers.
DKeep clear of all moving parts when starting or operating the pump.
DKeep your hands away from the elevator, pump support, drum cover, and the lip of the drum while
the elevator is operating or is charged with air.
DAlways shut off the agitator and disconnect the air line before you remove the agitator from the
drum or check or repair any part of the agitator.
DBefore servicing the equipment, follow the Pressure Relief Procedure on page 14 to prevent the
equipment from starting unexpectedly.

4 308770
WARNING
FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD
Improper grounding, poor ventilation, open flames, or sparks can cause a hazardous condition and
result in a fire or explosion and serious injury.
DThe electric heater must be installed, operated, and serviced only by trained, qualified personnel
who fully understand the requirements stated in the heater instruction manual (supplied).
DGround the equipment and the object being sprayed. Refer to Grounding on page 13.
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.
DElectrically disconnect all equipment in the spray area.
DExtinguish 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 operating or 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.

308770 5
Installation
General Information
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and the
parts drawing.
NOTE: Always use Genuine Graco Parts and Acces-
sories, available from your Graco distributor. Refer to
Product Data Sheet 305896. If you supply your own
accessories, be sure they are adequately sized and
pressure-rated for your system.
Prepare the Operator
All persons who operate the equipment must be
trained in the safe, efficient operation of all system
components as well as the proper handling of all fluids.
All operators must thoroughly read all instruction
manuals, tags, and labels before operating the equip-
ment.
The following manuals are included with this equip-
ment:
D308793, 3:1 President Pump
D306982, President Air Motor
D308918, Fluid Filter
D307068, Fluid Ball Valves
D308401, Back Pressure Regulator
D308769, Supply Module
D306287, Elevator
D308466, Drum Cover
D308609, Back-Geared Agitator
D309524, Viscon HP Heater
Prepare the Site
Select a site with at least 9 ft (2.8 m) overhead clear-
ance for the elevator when fully raised.
Ensure that the wall is strong enough to support the
weight of the pump and accessories, heater, fluid,
hoses, and stress caused during pump operation.
Ensure that you have an adequate compressed air
supply. Refer to the performance chart on page 25 to
find the air consumption.
Refer to Fig. 1 on page 7. Bring a compressed air
supply line (A) from the air compressor to the pump
location. Be sure all air hoses are properly sized and
pressure-rated for your system. Use only electrically
conductive hoses. The air hose should have a 3/8
npt(m) thread.
Install a bleed-type shutoff valve (B) in the air line to
isolate the air line components for servicing. Install a
moisture trap and drain valve (C) to help remove
moisture and contaminants from the compressed air
supply.
Keep the site clear of any obstacles or debris that
could interfere with the operator’s movement.
Have a grounded, metal pail available for use when
flushing the system.

6 308770
Installation
Supplied Components
Refer to Fig. 1.
WARNING
A red-handled bleed-type master air valve (11h)
and a fluid drain valve (208) are supplied. These
components help reduce the risk of serious injury,
including splashing of fluid in the eyes or on the
skin, and injury from moving parts if you are adjust-
ing or repairing the pump.
The bleed-type master air valve relieves air trapped
between this valve and the pump after the air is
shut off. Trapped air can cause the pump to cycle
unexpectedly. Locate the valve close to the pump.
The fluid drain valve assists in relieving fluid pres-
sure in the displacement pump, hose, and gun.
Triggering the gun to relieve pressure may not be
sufficient.
DThe red-handled bleed-type master air valve
(11h) is required in your system to relieve air
trapped between it and the air motor when the
valve is closed (see the WARNING above). Be sure
the bleed valve is easily accessible from the pump,
and is located downstream from the pump air
filter/regulator (11a).
DThe pump air filter/regulator (11a) controls pump
speed and outlet pressure by adjusting the air
pressure to the pump. It includes an air filter with a
40 micron polypropylene element, to remove harm-
ful dirt and moisture from the compressed air
supply. Locate close to the pump, but upstream
from the bleed-type master air valve (11h).
DThe air line lubricator (11b) provides automatic
lubrication of the air motor.
DThe air relief valve (11j) opens automatically to
prevent overpressurization of the pump.
DFluid is supplied to the pump through the suction
hose (16) and tube (109). The suction tube (109)
is installed in the shaft of the agitator (102). See
Fig. 1.
DThe fluid filter (206) includes a 60 mesh (250
micron) stainless steel element to filter particles
from the fluid as it leaves the pump.
DThe fluid drain valve (208), is mounted in the
bottom of the fluid filter bowl, and is required in your
system to relieve fluid pressure in the hose and gun
(see the WARNING at left).
DThe back pressure regulator (12) controls back
pressure to the gun and maintains proper circula-
tion pressure.
DThe back-geared agitator (102) keeps the fluid in
suspension and also includes a suction tube (109)
to draw fluid from a 55 gallon drum.
DThe air-operated elevator (150) allows you to
raise the drum cover and agitator from an empty
drum, replace the drum, and lower the agitator into
the new drum.

308770 7
Installation
Fig. 1
A
B
C
Detail of Air Controls
22
1
37
150
16
101
102
105
24
E
206
14
12
F
G
21
19
11h
208
11a 11b
11j
109
114
40
11
202
201
23
4See Detail of Air Controls in upper left corner.
1Ensure that there is 9 ft (2.8 m) overhead clearance
for the elevator when fully raised.
2Mount the pump module so the top of the bracket is
4 to 5 ft (1.2 to 1.5 m) above the floor.
3The suction hose is 6 ft (1.8 m) long. Do not stretch
the hose tight; let it hang as shown, to assist fluid
flow into the pump.
4
3
2
5The center of the two outer left holes of the heater
bracket must be no more than 9 in. (228 mm) from the
right edge of the pump bracket (22). See page 27.
5
108
11k
11c
11d
159
209
7760C

8 308770
Installation
Installing the Pump Module
The pump module consists of the pump mounted on
the pump bracket, the air controls, back pressure
regulator, hoses, and plumbing.
NOTE: Refer to Fig. 1 on page 7, and to the Dimen-
sion drawing on page 26 and the Mounting Hole Lay-
outs on page 27.
1. Ensure that the wall is strong enough to support
the weight of the pump and accessories, heater,
fluid, hoses, and stress caused during pump
operation.
2. Mount the pump near a site with at least 9 ft (2.8
m) overhead clearance for the elevator when fully
raised.
3. Position the bracket mounting plate (37) on the
wall so the edge with the hook is facing up. Mount
the plate so the top edge is 4 to 5 ft (1.2 to 1.5 m)
above the floor. Check that the plate is level. Mark
two holes on the wall, using the plate as a tem-
plate. Drill two holes and attach the plate with 1/2
in. bolts and washers.
4. Using two people, hang the pump module on the
bracket mounting plate (37). Have one person hold
the module in place while the other checks that the
pump bracket (22) is level. Mark four holes on the
wall, using the pump bracket as a template. Re-
move the pump module.
5. Drill four holes in the wall.
WARNING
The pump bracket (22) must be bolted to the wall
with four bolts. Do not simply hang the pump
bracket on the bracket mounting plate (37).
6. Lift the pump module back into position, hang it on
the bracket mounting plate (37), and bolt the pump
bracket (22) to the wall. Use 1/2 in. bolts and
washers to mount the pump module to the wall.
Use bolts that are long enough to keep the pump
bracket (22) from vibrating during operation.

308770 9
Installation
Installing the 239857 Supply Module
NOTE: Refer to Fig. 1 on page 7, and to the Dimen-
sion drawing on page 26 and the Mounting Hole Lay-
outs on page 27.
1. Ensure that there is at least 9 ft (2.8 m) overhead
clearance for the elevator (150) when fully raised.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 14.
2. Locate the elevator (150) so the pump module’s
suction hose (16) will reach the swivel (101) at the
top of the agitator (102). The suction hose is 6 ft
(1.8 m) long. Do not stretch the hose tight; let it
hang as shown in Fig. 1, to assist fluid flow into the
pump.
3. See page 27. Using the elevator base as a tem-
plate, mark the floor. Drill four holes in the floor for
1/2 in. bolts. Make sure the bolts are long enough
to prevent the elevator from tipping.
4. Connect the suction hose (16) to the swivel outlet
(101) of the agitator (102). Connect the suction
hose ground wire to the ground lug on the agitator
as shown on page 13.
5. Loosen the captive screw and open the quick
connector (11c) on the air filter/regulator/lubricator
assembly (11). Refer to Using the Quick Con-
nectors, at right.
6. Slide the pipe adapter (11d) out of the quick con-
nector. Remove and discard the pipe plug from the
bottom port of the tee (11k).
7. Bring the coiled hose (105) up through the large
hole in the back pressure regulator’s bracket (24).
8. Screw the adapter (159) at the end of the coiled
hose (105) into the tee (11k).
9. Slide the pipe adapter (11d) into the quick connec-
tor (11c), close, and tighten the captive screw.
Using the Quick Connectors
To open a quick connector (11c), loosen the captive
screw (S) and open the connector. Slide the desired
component into the connector, close, and tighten the
screw. See Fig. 2.
06278
Fig. 2
S
11c
Connect the Fluid Lines
Connect a 1 to 3 ft (0.3–0.9 m) hose (E) to the tee
(209) at the outlet of the fluid filter (206), to isolate the
pump module from the main fluid line. Connect the
other end of the hose to the main fluid line (F).
Connect the fluid return line (G) to the ball valve (14) at
the inlet of the back pressure regulator (12). The return
hose (21) connects the back pressure regulator to the
3-way recirculation valve (19). As an option, the return
hose may be connected to the return line fitting (155)
on the drum cover (114).
Connect the Air Line
Connect the main air supply line (A) to the tee (11k) of
the air filter/regulator/lubricator assembly (11).

10 308770
Installation
Fluid Heater
The fluid heater (201) heats the fluid as it passes
through, to maintain the correct spraying viscosity.
Read and understand all instructions in the supplied
heater manual (309524) before operating the heater.
WARNING
FIRE, EXPLOSION, AND ELECTRIC
SHOCK HAZARD
The Viscon HP Heater must be installed
by a qualified electrician in compliance
with all state and local codes and regula-
tions, to reduce the risk of electric shock
or other serious injury during installation
or operation.
When installing in a flammable atmo-
sphere (hazardous location) refer to
Article 500 of the US National Electric Code or
other applicable agency standards to plan the
work.
Refer to the Technical Data section and to the
supplied Viscon HP Heater manual (309524) for
information on heater power supply requirements.
Do not plug in or unplug a power cord in any area
containing flammable fluids or fumes, to avoid fire
or explosion resulting in serious injury.
Do not put all flammable materials and debris on
or near the heater. Keep the work area clean.
WARNING
COMPONENT RUPTURE HAZARD
Heat causes fluid to expand. If the
heated fluid is trapped with nowhere to
expand, it can cause component rupture.
Be sure to keep the heated fluid circulating (turn
the 3-way recirculation valve to the circulation
position). Do not install a fluid shutoff device
between the heater and the gun.
Conversion Modules
Heater Modules 239851 (240V), 239852 (240V), and
241883 (200V)
Heater Modules are available to convert the heated
circulation package to a different voltage. Each module
includes a heater configured to the desired voltage,
and mounting hardware. Instructions are included.
Surge Tank Module 239858
Part No. 239858 Surge Tank Module is available as an
accessory. The module includes a surge tank, stand,
and connecting hardware. Instructions are included.

308770 11
Installation
Installing the Heater Module
NOTE: Refer to Fig. 3, and to the Dimension drawing
on page 26 and the Mounting Hole Layouts on page
27.
1. Position the heater bracket (205) to the right of the
pump bracket (22), at the same height. The two
slots must face up. The center of the two outer left
holes must be no more than 9 in. (228 mm) from
the right edge of the pump bracket. See page 27.
2. Check that the heater bracket (205) is level. Using
the bracket as a template, mark the four outer
holes on the wall. The four outer holes are used to
mount the bracket to the wall, and the two inner
slots and two inner holes are to mount the heater
(201) to the bracket.
3. Drill four holes in the wall.
4. Bolt the bracket (205) to the wall with 1/2 in. bolts
and washers. Use bolts that are long enough to
keep the bracket from vibrating during operation.
5. Install two screws (D, included with the heater) into
the top two heater mounting posts until they are
about 1/8 in. (3 mm) from fully installed.
6. Using two people, lift the heater (201) onto the
bracket (205) so the two screw heads (D) slide into
the slots. Have one person hold the heater in place
while the other installs the remaining two screws
(supplied with the heater) through the bracket and
into the bottom mounting posts. Tighten all four
screws.
7. Connect the free end of the heater supply hose
(202) to the swivel (23) at the pump fluid outlet.
Tighten securely.
Fig. 3
1
D
205
23
202 201
206
203
204
2
Refer to text and Mounting Hole Layout on page 27 for
correct positioning.
3
Install top two screws until they are about 1/8 in. (3 mm)
from fully installed.
Connect a 1 to 3 ft (0.3 to 0.9 m) hose here.
1
2
3
22
212
7782C

12 308770
Notes

308770 13
Installation
Grounding
WARNING
FIRE, EXPLOSION, AND
ELECTRIC SHOCK HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE, EXPLOSION, AND
ELECTRIC SHOCK HAZARD on page
4.
1. Pump: use the ground wire and clamp (40, sup-
plied). See Fig. 4. Loosen the grounding lug lock-
nut (W) and washer (X). Insert one end of the
ground wire (40) into the slot in lug (Z) and tighten
the locknut securely. Connect the ground clamp to
a true earth ground.
Fig. 4
W
40
X
Z
0720
2. Air and fluid hoses: use only electrically conductive
hoses.
3. Air compressor: follow manufacturer’s recommen-
dations.
4. Viscon HP Heater: refer to the heater manual,
supplied.
5. Spray gun: ground through connection to a prop-
erly grounded fluid hose and pump.
6. Agitator: use the ground wire and clamp (108,
supplied). See Fig. 5. Loosen the grounding lug
locknut (W) and washer (X). Insert one end of the
ground wire (108) into the slot in lug (Z) and
tighten the locknut securely. Connect the ground
clamp to a true earth ground.
Fig. 5
W
108
X
Z
0720
16
7. Suction hose: attach the hose (16) ground wire to
the ground lug on the agitator. See Fig. 5. If you
are not using an agitator, attach the wire to the
fluid supply container.
8. Fluid supply container: follow your local code.
9. Object being sprayed: follow your local code.
10. Solvent pails used when flushing: follow your local
code. Use only metal pails, which are conductive,
placed on a grounded surface. Do not place the
pail on a nonconductive surface, such as paper or
cardboard, which interrupts the grounding continu-
ity.
11. To maintain grounding continuity when flushing or
relieving pressure, hold a metal part of the spray
gun firmly to the side of a grounded metal pail,
then trigger the gun.

14 308770
Operation
Pressure Relief Procedure
WARNING
PRESSURIZED EQUIPMENT HAZARD
The system pressure must be manually relieved to
prevent the system from starting or spraying acci-
dentally. To reduce the risk of an injury from acci-
dental spray from the gun, splashing fluid, or
moving parts, follow the Pressure Relief Proce-
dure whenever you:
Dare instructed to relieve the pressure,
Dstop spraying,
Dcheck or service any of the system equipment,
Dor install or clean the spray nozzle.
WARNING
HOT SURFACE HAZARD
Do not touch the heater while it is oper-
ating. Allow the heater to cool for at least
10 minutes before flushing or servicing
it.
WARNING
FIRE AND EXPLOSION HAZARD
Do not plug in or unplug a power cord in
any area containing flammable fluids or
fumes, to avoid fire or explosion result-
ing in serious injury.
1. Disconnect the electric power to the heater (201).
2. Circulate the fluid for at least 10 minutes to cool
the heated fluid and the heater.
3. Close the red-handled bleed-type master air valve
(11h, required in your system). See Fig. 6.
4. Place the drain hose (42) into a waste container.
Turn the 3-way recirculation valve (19) to the drain
position.
5. Trigger the gun at the last gun station to relieve
fluid pressure. Maintain firm metal-to-metal contact
between the gun and a grounded waste pail.
Repeat for all gun stations.
6. Open the drain valve (208) to relieve fluid pressure
which may be trapped in the pump or hose.
If you suspect that pressure is not fully relieved after
following the steps above, wrap a fitting near the pump
outlet with a rag, and slowly and carefully loosen the
fitting to relieve pressure. Be careful to protect your
eyes from splashing.
Packing Nut
Before starting, fill the packing nut (H) 1/3 full with
Graco Throat Seal Liquid (TSL) or compatible solvent.
See Fig. 6.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
The packing nut is torqued at the factory and is ready
for operation. If it becomes loose and there is leaking
from the throat packings, relieve pressure, then torque
the nut to 34–40 NSm (25–30 ft-lb). Do this whenever
necessary. Do not overtighten the packing nut.
Flush the Pump Before First Use
The pump is tested with lightweight oil, which is left in
to protect the pump parts. If the fluid you are using
may be contaminated by the oil, flush it out with a
compatible solvent. See Flushing on page 18.

308770 15
Operation
Prime the Pump
1. Disconnect the electric power to the heater before
priming the pump.
2. Open the fluid shutoff valve (14).
3. Open the back pressure regulator (12). Turn the
3-way recirculation valve (19) to the circulation
position.
4. Open the spray gun at the last gun station and
keep it open while starting the pump.
5. Open the bleed-type master air valves (11h, B).
6. Slowly open the air filter/regulator (11a) until the
pump starts. The air filter/regulator controls the
pump speed and fluid outlet pressure.
7. When fluid comes from the gun, release the gun
trigger. The pump will continue to cycle as long as
air is supplied and the back pressure regulator (12)
is open.
8. One at a time, open any other guns in the system
to purge air from the lines.
NOTE: In a circulating system, the pump will continue
to cycle as long as air is supplied and the back pres-
sure regulator is open. In a direct supply system, the
pump starts when the gun is opened, and stops when
the gun is closed.
WARNING
COMPONENT RUPTURE HAZARD
To reduce the risk of overpressurizing
your system, which could cause
component rupture and serious injury,
never exceed the specified maximum air input
pressure to the package (see Technical Data on
page 25).
CAUTION
Do not allow the pump to run dry. It will quickly
accelerate to a high speed, causing damage. If your
pump is running too fast, stop it immediately and
check the fluid supply. If the container is empty and
air has been pumped into the lines, refill the con-
tainer and prime the pump and the lines, or flush and
leave it filled with a compatible solvent. Eliminate all
air from the fluid system.
Adjust the Spray Pattern
1. Start the pump. Connect the electric power to the
heater. Turn the 3-way recirculation valve (19) to
the circulation position.
2. Set the heater control to a trial point (4 or 5).
3. Circulate fluid through the pump for at least 10
minutes, at very low pressure. Check the tempera-
ture on the heater thermometer.
4. Adjust the fluid pressure and temperature to the
lowest settings necessary to get the desired re-
sults. Use the air filter/regulator (11a) and the back
pressure regulator (12) to adjust the pump speed
and fluid pressure until the spray is completely
atomized. Refer to the back pressure valve and
heater manuals (supplied) for adjustment proce-
dures. Higher pressures and temperatures may
not improve the spray pattern and will cause
premature component wear.
5. To adjust the spray pattern, follow the complete
instructions in your gun manual.
WARNING
COMPONENT RUPTURE HAZARD
To reduce the risk of overpressurizing
your package, which could cause com-
ponent rupture and serious injury, never
exceed 100 psi (0.7 MPa, 7 bar) air input pressure
to the package. Also refer to the Technical Data
section on page 25 and to your separate compo-
nent manuals.
Heat causes fluid to expand. If the heated fluid is
trapped with nowhere to expand, it can cause
component rupture. Be sure to keep the heated
fluid circulating by turning the 3-way recirculation
valve (19) to the circulation position. Do not install
a fluid shutoff device between the heater and the
gun.

16 308770
Operation
Elevator Operation
1. To raise the elevator (150), connect the quick
coupler (124) on the end of the coiled hose (105)
to the male fitting (J) on the air control valve (K).
Pull up the air control valve button to raise the
elevator to its full height.
WARNING
MOVING PARTS HAZARD
Moving parts can pinch or amputate your
fingers. When raising or lowering the
elevator, keep your fingers and hands
away from the elevator (150), cover support (125),
drum cover (114), and lip of the drum.
Do not remove the quick coupler (124) from the
male fitting (J) until the elevator is completely
lowered.
2. Position a full drum under the drum cover (114).
3. To lower the elevator (150), press down the air
control valve (K) button. Lower the elevator until
the cover (114) rests properly on the lip of the
drum. Disconnect the quick coupler (124) from the
male fitting (J).
4. Refer to manual 306287 for further elevator oper-
ating instructions.
Agitator Operation
1. Close the agitator’s needle valve (L).
2. Connect the quick coupler (124) on the end of the
coiled hose (105) to the male fitting (M) on the
agitator (102).
3. Slowly open the needle valve (L) to start the
agitator (102). Use the valve to adjust the speed.
Do not operate the agitator too fast. If the fluid
foams or a vortex forms on the fluid surface,
reduce the speed of the agitator.
4. Refer to manual 308609 for further agitator operat-
ing instructions.
Shutdown
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 14.
1. Lower the elevator (150).
2. Shut off the agitator (102).
3. Relieve the pressure.
For overnight shutdown, stop the pump at the bottom
of its stroke to prevent fluid from drying on the ex-
posed displacement rod and damaging the throat
packings. Relieve the pressure.
Always flush the pump before the fluid dries on the
displacement rod. See Flushing on page 18.
NOTE: When changing fluid containers with the hose
and gun already primed, open the drain valve (208) to
help prime the pump and vent air before it enters the
hose. Close the drain valve when all air is eliminated.

308770 17
Operation
Fig. 6
150
102
105 206
21
19
11h
208
11a
114
42
H
1
124
J
K
125
L
M
201
1Torque packing nut (H) to 34–40 NSm (25–30 ft-lb).
Packing nut is partially hidden.
2Items 12 and 14 are partially hidden.
12, 14
2
7759C

18 308770
Maintenance
Preventive Maintenance Schedule
The operating conditions of your particular system
determine how often maintenance is required. Estab-
lish a preventive maintenance schedule by recording
when and what kind of maintenance is needed, and
then determine a regular schedule for checking your
system.
Flushing
WARNING
FIRE, EXPLOSION, AND
ELECTRIC SHOCK HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE, EXPLOSION, AND
ELECTRIC SHOCK HAZARD on page
4.
Flush the pump:
DBefore the first use
DWhen changing colors or fluids
DBefore fluid can dry or settle out in a dormant pump
(check the pot life of catalyzed fluids)
DBefore storing the pump.
Flush with a fluid that is compatible with the fluid you
are pumping and with the wetted parts in your system.
Check with your fluid manufacturer or supplier for
recommended flushing fluids and flushing frequency.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 14.
1. Relieve the pressure.
2. Remove the air cap and spray tip from the gun.
See the gun manual.
3. Remove the filter element from the fluid filter (206).
Reinstall the filter bowl.
4. Open the back pressure regulator (12). Set the
3-way recirculation valve (19) to the circulation
position.
5. Lower the agitator (102) into a container of solvent.
Start the agitator and run it slowly.
6. Hold a metal part of the gun firmly to the side of a
grounded metal pail.
7. Start the pump. Always use the lowest possible
fluid pressure when flushing.
8. Trigger the gun. Flush the system until clear
solvent flows from the gun.
9. Release the gun trigger and lock the trigger safety.
The pump will continue to cycle as long as air is
supplied and the back pressure regulator (12) is
open.
10. Direct the drain hose (42) into a waste container.
Set the 3-way recirculation valve (19) to the drain
position. Continue flushing until clear fluid comes
from the hose.
11. Relieve the pressure.
12. Clean the air cap, spray tip, and fluid filter element
separately, then reinstall them.
Air Filter Service
Repair Kits are available. Refer to page 19.
Every day, drain contaminants from the bowl before
reaching the baffle level by opening the drain (P) at the
bottom of the bowl (N).
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 14.
Clean the air filter regularly to maximize filtering effi-
ciency and to avoid excessive pressure drop. Fully
relieve pressure to remove the bowl (N).
Clean the filter element (311) and bowl using house-
hold soap and water or denatured alcohol. Use com-
pressed air to blow out the filter body. Blow the filter
element out from the inside.
Clean the sight glass (309) thoroughly. Do not leave
solvent residue in the sight glass as it may attack or
weaken the glass. If the sight glass appears damaged,
replace it immediately.

308770 19
Maintenance
05998
301*
302*
303*
304*
305*
306*{
308{
309{
307*
310{
311}
Model 113765
Air Filter/Regulator Shown
1
Lubricate with no. 2
lithium-base grease.
1
1
1
1
1
1
1
N
P
Repair Kit 239383 (includes items 301 to
307). For Part No. 113765 Air
Filter/Regulator.
Kit parts are marked with an asterisk (301*). Individual
parts are not available separately.
Ref.
No. Part No. Description Qty.
301* N/A DIAPHRAGM 1
302* N/A VALVE ASSEMBLY 1
303* N/A O-RING, valve 1
304* N/A SPRING, valve 1
305* N/A O-RING, center post 1
306* N/A O-RING, bowl assembly 1
307* N/A GASKET, drain 1
Sight Glass Kit 239385 (includes items
306 to 310). For Part No. 113765 Air
Filter/Regulator.
Kit parts are marked with a symbol (308{). Individual
parts are not available separately.
Ref.
No. Part No. Description Qty.
306{N/A O-RING, bowl assembly 1
308{N/A SCREW 2
309{N/A LENS, sight glass 1
310{N/A SEAL, lens 1
Filter Element Kit 239384 (includes item
311). For Part No. 113765 Air
Filter/Regulator.
Kit parts are marked with a symbol (311}). Individual
parts are not available separately.
Ref.
No. Part No. Description Qty.
311}N/A ELEMENT, 40 micron; polypropylene 1

20 308770
Parts
Pump Module Parts
7756B
10
9
1
38
39
C
C
A
A
14
40
31
10 (Ref)
11g
11h
16
27
21 41
42
26
19
18
8
7
6
2
3
23
22 37
32
33
11k
24
31
20
29
12
21 (Ref)
11e
11f
11a
11b
11c
11d
11k
11j
11d
11c
32
33
11n