Graco Hydra-Spray B Series User manual

Instructions – Parts List
GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441
Copyright 1983, Graco Inc. is registered to I.S. EN ISO 9001
5 GALLON (19 LITER) PAIL-MOUNTED
23:1 Ratio Monarkr
Hydra-SprayrSprayers
2760 psi (19 MPa, 190 bar) Maximum Fluid Working Pressure
120 psi (0.8 MPa, 8 bar) Maximum Air Inlet Pressure
Part No. 226970, Series B
With Agitator
Part No. 231114, Series A
Without Agitator
307621R
Read warnings and instructions.
See page 2 for table of contents.
05983
Model 226970 Shown
0359 II 1/2 G T6
ITS03ATEX11251
Parts

2 307621
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Warranty 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Information NO TAG. . . . . . . . . . . . . . . . . . . . . . .
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.
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 page 16 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.

307621 3
WARNING
INJECTION HAZARD
Spray from the gun, 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 medi-
cal attention.
DDo not point the gun at anyone or at any part of the body.
DDo not put your hand or fingers over the spray 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 gun when spraying.
DCheck the gun diffuser operation weekly. Refer to the gun manual.
DBe sure the gun trigger safety operates before spraying.
DLock the gun trigger safety when you stop spraying.
DFollow the Pressure Relief Procedure on page 8 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 or damaged parts immediately.
Do not repair high pressure couplings; you must 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.
DBefore servicing the equipment, follow the Pressure Relief Procedure on page 8 to prevent the
equipment from starting unexpectedly.

4 307621
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 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.

307621 5
Setup
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. If you
supply your own accessories, be sure they are ade-
quately sized and pressure rated for your system.
Fig. 2 is only a guide for selecting and installing sys-
tem components and accessories. Contact your Graco
distributor for assistance in designing a system to suit
your particular needs.
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.
Prepare the Site
The pump requires 12 scfm (0.336 m#/min) of com-
pressed air while operating at 120 psi (0.8 MPa, 8 bar)
air pressure and 60 cycles per minute. Ensure that you
have an adequate compressed air supply.
Refer to Fig. 2. Bring a compressed air supply line (A)
from the air compressor to the pump location. Be sure
all air hoses (A) are properly sized and pressure-rated
for your system. Use only electrically conductive
hoses. The air hose should have a 1/2 npt(m) thread.
Install a bleed-type shutoff valve (B) in the air line to
isolate the air line components for servicing. Install an
air line moisture trap and drain valve (C) to help re-
move moisture 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 or draining the fluid filter.
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.
1. Pump: use the ground wire and clamp (supplied).
See Fig. 1. Loosen the grounding lug locknut (W)
and washer (X). Insert one end of the ground wire
(57) into the slot in lug (Z) and tighten the locknut
securely. Connect the other end of the wire to a
true earth ground.
Fig. 1
W
X
57
Z
0864
2. Air and fluid hoses: use only electrically conductive
hoses.
3. Air compressor: follow manufacturer’s recommen-
dations.
4. Spray gun: ground through connection to a prop-
erly grounded fluid hose and pump.
5. Fluid supply container: follow your local code.
6. Object being sprayed: follow your local code.
7. 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.
8. 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.

6 307621
Setup
Supplied Components
Refer to Fig. 2.
WARNING
A red-handled bleed-type master air valve (1) and
a fluid drain valve (20) are supplied. These acces-
sories help reduce the risk of serious injury, includ-
ing fluid injection and splashing of fluid in the eyes
or on the skin, and injury from moving parts if you
are adjusting or repairing the pump.
The bleed-type master air valve relieves air trapped
between this valve and the pump after the valve is
closed. 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. Never connect a secondary hose or
spray gun to the fluid drain valve.
DThe red-handled bleed-type master air valve (1)
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 air regulator (5).
DThe air regulator (5) controls pump speed and
outlet pressure by adjusting the air pressure to the
pump. It also removes harmful dirt and moisture
from the compressed air supply. Locate close to the
pump, but upstream from the bleed-type master air
valve (1).
DThe air manifold (27) provides ports for connect-
ing lines to air-powered accessories.
DThe fluid filter (10) includes a 60 mesh (250
micron) stainless steel element to filter particles
from the fluid as it leaves the pump.
DThe fluid drain valve (20) is required in your
system to relieve fluid pressure in the hose and gun
(see the WARNING above).
DThe agitator (59) is supplied on Model 226970
only. To prevent fluid from settling out, operate the
agitator as explained in its separate manual
306565.
Available Accessories (must be
purchased separately)
Refer to Fig. 2. Use necessary adapters when instal-
ling these accessories.
DThe air filter (D) removes harmful dirt and moisture
from the compressed air supply. Install upstream
from the air regulator (5).
DAn air line lubricator (F) provides automatic air
motor lubrication. Install downstream from all other
air line accessories.
Assemble the Sprayer
NOTE: Use thread sealant on all male threads except
at swivel connections.
1. Assemble the bushing (2), air regulator (5) and
attached parts to the red-handled bleed valve (1).
2. On Model 226970 only, connect the air hose
(59b) to the air inlet of the agitator (59a).
3. Screw the drain valve (20) into the open port of the
fluid filter (10). Screw the elbow (3) onto the drain
valve so the elbow points down.
WARNING
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. Never connect a secondary hose or
spray gun to the fluid drain valve.
4. Connect the main fluid hose (6) to the nipple (30)
at the fluid filter (10) outlet.
5. On Model 226970 only, screw the gun swivel (58)
onto the other end of the hose (6).
6. Connect the spray gun (9) to the fluid hose (6) or
gun swivel (58).

05984
KEY
COMPONENTS YOU MUST SUPPLY
A Electrically Conductive Air Supply Hose
B Bleed-Type Master Air Valve
(for accessories)
C Air Line Moisture Trap and Drain Valve
D Air Line Filter
E Fitting for Lubricator
F Air Line Lubricator
SUPPLIED WITH ALL MODELS
1 Red-Handled Bleed-Type Master
Air Valve (required, for pump)
2 Air Line Bushing
3 Drain Valve Elbow
5 Air Regulator
6 Fluid Supply Hose
7 Pump
9 Airless Spray Gun
10 Fluid Filter
20 Fluid Drain Valve (required)
21 19 Liter (5 Gallon) Pail
27 Air Manifold
30 Fluid Filter Outlet Nipple
57 Ground Wire (required; see page 5
for installation instructions)
SUPPLIED WITH MODEL 226970 ONLY
58 Gun Swivel
59aAgitator
59bAgitator Air Hose
Fig. 2 Model 226970 Shown
A
B
C
D
E
F
58
9
6
20
3
10
7
59a
1
59b
27
5
2
21
57
30
307621 7
Setup

8 307621
Operation
Pressure Relief Procedure
WARNING
INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected 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. Lock the gun trigger safety.
2. Close the red-handled bleed-type master air valve
(1, required in your system).
3. Close the air regulator (5).
4. Unlock the gun trigger safety.
5. Hold a metal part of the gun firmly to the side of a
grounded metal pail, and trigger the gun to relieve
pressure.
6. Lock the gun trigger safety.
7. Open the drain valve (20, required in your system),
having a container ready to catch the drainage.
8. Leave the drain valve open until you are ready to
spray again.
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
tip guard retaining nut or hose end coupling and relieve
pressure gradually, then loosen completely. Now clear
the tip or hose.
Packing Nut/Wet-Cup
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 packing nut to 18 to 20 ft-lb (24 to 27 N.m).
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 10.
Using the Airless Spray Gun
Before operating the equipment, read the instruction
manual supplied with the gun.
Spray some test patterns before doing any finished
work. Refer to the gun manual for detailed information
on correct spraying technique.
Using the Agitator (Model 226970 only)
Before operating the agitator, read the agitator instruc-
tion manual supplied.

307621 9
Operation
Prime the Pump
1. See Fig. 3. Remove the tip guard and spray tip
(31) from the gun (9). See the gun instruction
manual.
2. Close the air regulator (5) and bleed-type air
valves (B, 1).
3. Close the fluid drain valve (20).
4. Connect the main air supply hose (A) to the air
manifold (27).
5. Check that all fittings throughout the system are
tightened securely.
6. Open the bleed-type air valves (B, 1).
7. Hold a metal part of the gun (9) firmly to the side of
a grounded metal pail and hold the trigger open.
8. Slowly open the air regulator (5) until the pump
starts, about 40 psi (2.8 bar).
9. Cycle the pump slowly until all air is pushed out
and the pump and hoses are fully primed.
10. Release the gun trigger and lock the trigger safety.
The pump should stall against pressure.
Set the Air and Fluid Pressure
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
1. Relieve the pressure. Install the tip guard and
spray tip (31) in the gun (9), as explained in the
gun manual.
2. Open the air regulator (5) slowly. Use the regulator
to control pump speed and fluid pressure. Always
use the lowest air pressure necessary to get the
desired results. Higher pressures cause premature
tip and pump wear.
NOTE: To open the air regulator, turn the T-handle in
(clockwise). To close the regulator, turn the handle
counterclockwise. To lock the regulator setting, tighten
the jam nut.
WARNING
COMPONENT RUPTURE HAZARD
To reduce the risk of overpressurizing
your system, which could cause compo-
nent rupture and serious injury, never
exceed the specified Maximum Incoming Air Pres-
sure to the pump (see the Technical Data, on
page 16).
3. With the pump and lines primed, and with ade-
quate air pressure and volume supplied, the pump
will start and stop as you open and close the gun.
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.

10 307621
Operation
Shutdown and Care of the Pump
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
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 below.
Flushing
WARNING
FIRE AND EXPLOSION HAZARD
Before flushing, read the section FIRE
AND EXPLOSION HAZARD on page
4. Be sure the entire system and flush-
ing pails are properly grounded. Refer to
Grounding on page 5.
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.
CAUTION
Never leave water or water-base fluid in the pump
overnight. If you are pumping water-base fluid, flush
with water first, then with a rust inhibitor such as
mineral spirits. Relieve the pressure, but leave the
rust inhibitor in the pump to protect the parts from
corrosion.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
1. Relieve the pressure.
2. Remove the tip guard and spray tip (31) from the
gun (9). See the gun instruction manual.
3. Remove the filter element from the fluid filter (10).
Reinstall the filter bowl.
4. Hold a metal part of the gun firmly to the side of a
grounded metal pail.
5. Start the pump. Always use the lowest possible
fluid pressure when flushing.
6. Trigger the gun.
7. Flush the system until clear solvent flows from the
gun.
8. Relieve the pressure.
9. Clean the tip guard, spray tip, and fluid filter ele-
ment separately, then reinstall them.