Graco Dyna-Star 236753 Datasheet

INSTRUCTIONS–P ARTS LIST 308–390
Rev. A
Dyna–Star
HYDRAULIC RECIPROCATOR & PUMP
1500 psi (105 bar) MAXIMUM HYDRAULIC INPUT PRESSURE
375 psi (26 bar  MAXIMUM FLUID OUTLET PRESSURE
1/4:1 RATIO UNIVERSALPUMP & RECIPROCATOR
Model 236–753, Series A, Stubby Length
RECIPROCATOR ONLY
Model 236–751, Series A
The pump is designed to dispense lube products
only. Any other fluids can cause unsafe operating
conditions and result in component rupture, fire or
explosion which could cause serious injury, includ-
ing
fluid injection.
WARNING
Patent No. 4,383,475
Foreign Patents Pending
Patent 1984 Canada
Brevete 1984
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Terms 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reciprocator Repair 12. . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement Pump Repair 17. . . . . . . . . . . . . . . . . . . . .
Parts List & Drawing
Universal 1/4:1 Ratio Displacement Pump 19. . . . . .
Reciprocator 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensional Drawing and Mounting Hole Layout 23. .
Warranty 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Numbers 24. . . . . . . . . . . . . . . . . . . . . . . . .
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1994, GRACO INC.
This manual contains important
warnings and information.
READ AND RETAIN FOR REFERENCE
Model 236–753 shown


2308-390
WARNINGS
High Pressure Spray Can Cause Serious Injury . For Professional Use Only.
Observe All W arnings. Read and understand all instruction manuals before operating equipment.
FLUID INJECTION HAZARD
General Safety
The hydraulic reciprocator and pump can generate high
fluid pressure. Spray from leaks or ruptured components
can inject fluid through your skin and into your body and
cause extremely serious injury , including the need for
amputation.
Also, fluid injected or splashed into the eyes
or on the skin can cause severe damage.
Never point the dispense valve at anyone or at any part of
the body . Never put hand or fingers over the nozzle.
Always follow the Pressure Relief Procedure, right, be -
fore cleaning or removing the dispense valve nozzle or
servicing
any system equipment.
Never try to stop or deflect leaks with your hand or body .
Check operation of all equipment safety devices before
each
use.
Medical Alert––Airless Spray W ounds
If any fluid appears to penetrate your skin, get EMER-
GENCY
MEDICAL CARE A T ONCE. DO NOT TREA T
AS A SIMPLE CUT . Tell the doctor exactly what fluid
was injected.
Note to Physician: Injection in the skin is a traumatic in
jury. It is important to treat the injury surgically as
soon
as possible. Do not delay treatment to research
toxicity. T oxicity is a concern with some exotic coatings
injected directly into the blood stream. Consultation
with a plastic surgeon or reconstructive hand surgeon
may
be advisable.
Pressure Relief Procedure
To reduce the risk of serious injury , including fluid
injection, injury from moving parts, and splashing
in the eyes or on the skin, always follow this proce -
dure whenever you shut of f the pump, when
checking or servicing any part of the dispensing
system,
when installing, cleaning or changing dis -
pense
valve nozzles, and whenever you stop dis -
pensing.
1. Close the supply line shutof f valve, and then
the
return line shutof f valve.
2. Open the dispensing valve to relieve pres-
sure.
3. Place a container under the drain valve to
catch any drainage. Open the pump outlet
drain
valve.
4. Leave the drain valve open until you are ready
to dispense again.
If you suspect that the dispense valve nozzle or
hose
is completely clogged, or that pressure has
not been fully relieved after following the steps
above,
very slowly loosen the hose end coupling
to relieve pressure gradually , then loosen com-
pletely.
Clear the obstruction.
Emergency Stop Procedure
Close the supply line shutof f valve marked STOP.
EQUIPMENT MISUSE HAZARD
General Safety
Any misuse of the dispensing equipment or accessories,
such as overpressurizing, modifying parts, using incom -
patible chemicals and fluids, or using worn or damaged
parts,
can cause them to rupture and result in injection or
other serious injury , fire, explosion or property damage.
Never alter or modify any part of this equipment; doing so
could cause it to malfunction.
Check all spray equipment regularly and repair or replace
worn or damaged parts immediately .
Always
read and follow the fluid and solvent manufactur -
er’s recommendations regarding the use of protective
eyewear,
clothing and equipment, including respirators.
Fluid Compatibility
BE
SURE that all fluids and solvents used are chemically
compatible with the wetted parts shown in the T echnical
Data
section on page 23. Always read the fluid and solvent
manufacturer’s literature before using them in your sys -
tem.
System Pressure
The reciprocator Maximum Hydraulic Input Pressure is
1500
psi (105 bar).
The displacement pump Maximum Fluid Outlet Pressure
is 375 psi (26 bar) .
The maximum working pressure of the pump is directly
proportional
to the pressure at which the reciprocator is op -
erated.
Be sure that any components or accessories added to
the
reciprocator power supply side or the pump fluid out -
let
side are rated to withstand this pressure.

3
308-390
HOSE SAFETY
High pressure fluid in the hydraulic hoses and pump fluid
outlet hoses can be very dangerous. If a hose develops a
leak, split or rupture due to any kind of wear , damage or
misuse, the high pressure spray emitted from it can
cause a fluid injection injury or other serious injury or
property
damage.
Tighten all fluid connections securely before each use.
High
pressure fluid can dislodge a loose coupling or allow
high pressure spray to be emitted from the
coupling.
Never
use a damaged hose. Before each use, check en -
tire
hose for cuts, leaks, abrasion, bulging cover , or dam -
age or movement of the hose couplings. If any of these
conditions exist, replace the hose immediately . Do not
recouple
high pressure hose. Never use tape or any de -
vice to try to mend the hoses; it cannot contain the high
pressure fluid.
Handle and route hoses carefully . Do not pull on hoses
to move equipment. Do not use fluids or solvents which
are not compatible with the inner tube and cover of the
hose.
Do not expose Graco hose to temperatures above
180_ F (82_ C) or below –40 _ F (–40_ C).
FIRE OR EXPLOSION HAZARD
Static electricity is created by the high velocity flow of
fluid through the reciprocator , pump and hose. If the
pump
is not properly grounded, sparking may occur , and
the system may become hazardous. Sparks from any
source
can ignite fumes from solvents and the fluid being
dispensed, dust particles and other flammable sub-
stances, and can cause a fire or explosion and serious
injury and property damage. Do not smoke, and do not
plug in or unplug any power supply cords in the spray
area when there is any chance of igniting vapors still in
the air.
If you experience any static sparking or even a slight
shock
while using this equipment, ST OP SPRA YING IM -
MEDIATELY.
Do not use the system again until the prob -
lem
has been identified and corrected.
Grounding
To reduce the risk of static sparking, ground the pump.
Check
your local electrical code for detailed grounding in -
structions
for your area and type of equipment.
1. Pump: use ground wire and clamp as shown to the
right.
2.
Hydraulic Hoses and Fluid Outlet Hoses: use only
electrically
conductive hoses.
3. Hydraulic Power Supply and Air Compressor: follow
manufacturer’s recommendations.
4. Any pails used when flushing. Use only metal,
grounded pails when flushing. Make firm metal–to–
metal contact between the a metal part of the dis-
pense valve and the pail. Use the lowest possible
pressure.
To ground the pump, loosen the grounding lug
locknut
(W) and washer (X). Insert one end of a 12
ga (1.5 mm @ ) minimum ground wire (Y) into the slot
in lug (Z) and tighten the locknut securely . Connect
the other end of the wire to a true earth ground. Re -
fer
to page 22 to order a ground wire and clamp.
ZX W
Y
03517
MOVING P ARTS HAZARD
Moving parts can pinch or amputate your fingers or
other body parts. Keep clear of moving parts when
starting or operating the pump. Follow the Pressure
Relief Procedure on page 2 before checking or serv -
icing the pump to prevent it from starting accidentally .
IMPORTANT
Terms
Be sure you read and understand each of these terms
before
reading the rest of the manual.
WARNING: Alerts user to avoid or correct conditions
which
could cause injury .
CAUTION: Alerts user to avoid or correct conditions
which could cause damage to or destruction of
equipment.
NOTE:
Gives additional information or helpful hints.
Safety Standards
United States Government safety standards have been
adopted under the Occupational Safety and Health Act.
These standards––particularly the General Standards,
Part
1910––should be consulted.

4308-390
Installation
KEY
AHydraulic
Fluid Control, 236–864
(See Manual 308–395)
B Porous Plug (W eep tube optional)
C Fluid Dispenser Outlet
D Drain V alve (Required)
F Hydraulic Return Line
G Hydraulic Outlet, 3/4 npt
H Return Line Shutof f V alve
J Hydraulic Inlet, 3/8 npt
K Hydraulic Supply Line Shutof f
Valve
L Pressure Gauge
M Pressure Reducing V alve
N Flow Control V alve
P Hydraulic Supply Line (Use only
GRACO hydraulic power supply)
Q Material Supply
R Ground Wire (Required)
SW all Mounting Bracket 236–778
(See Manual 308–394)
Typical Installation – Suction Feed System
Fig. 1
03516
R
F
P
A
H
K
M
N
B
J
Q
D
C
L
G
S
The installation shown above is only a guide. For assis -
tance in designing a system to suit your needs, contact
your
Graco representative.
Mount the pump to suit the type of installation planned.
See
page 22 for Accessories.
Maximum W orking Pressure of Accessories
To reduce the risk of serious bodily injury including
fluid injection and splashing in the eyes or on the
skin,
which may be caused if a component ruptures,
all accessories added to the reciprocator power
supply
side must have at least a 1500 psi (105 bar)
maximum working pressure and those to the pump
fluid outlet side must have at least a 375 psi (26 bar)
maximum working pressure.
WARNING
Pump Accessories
Suction Tube Kit A suction tube kit is available for si-
phoning
from 55 gallon containers.
Intake T ube (not shown) T o install, apply tape to
the female threads at the top of the tube. Screw the tube
tightly onto the intake housing of the stubby pump.
Low–level Cutoff Valve To install, screw the low–level
cutoff
valve into the bottom of the pump intake tube or the
suction tube. This valve closes the pump intake when the
fluid level is low, causing the pump to stall to avoid run-
ning
dry .
WARNING
Pump Outlet Drain V alve
A
pump outlet drain valve (D) is required in your sys -
tem. This valve helps relieve pressure in the dis-
placement
pump and hose when shutting down the
system and in case of a clogged outlet hose. Install
the valve close to the pump outlet.
Pump Outlet Drain V alve Install a drain valve (D) close
to the pump fluid outlet to assist in relieving fluid pressure
in the pump when the pump is shut of f.
Ground Wire A ground wire is required. See Acesso-
ries,
page 22.
PTFE

5
308-390
Installation
NOTE: Refer to the T ypical Installation to locate the parts
mentioned below .
Keep The Hydraulic System Clean
The hydraulic supply system must be kept clean at
all times to reduce the risk of damaging the recipro -
cator
hydraulic power supply . Blow out all hydraulic
lines with air , flush thoroughly with solvent, and then
blow out with air again before connecting the lines to
the reciprocator .
Always plug the hydraulic inlets, outlets and lines
when
disconnecting them for any reason to avoid in -
troducing dirt and other contaminants into the
system.
Carefully follow the manufacturer ’s recommenda-
tions on reservoir and filter cleaning, and periodic
changes
of hydraulic fluid.
CAUTION
Hydraulic Power Supply
WARNING
To reduce the risk of overpressurizing the hydraulic
reciprocator, which could cause a rupture and
serious bodily injury , including fluid injection, the
hydraulic
power supply must have a means to limit
the incoming fluid pressure developed in the system
to a maximum of 1500 psi (105 bar) .
Hydraulic Components
WARNING
Always turn off the hydraulic supply side valve (K,
Fig
1) first to avoid possible serious injury or compo -
nent
damage.
Hydraulic Fluid Control The hydraulic fluid control pro -
vides pressure regulation, flow regulation, and pump
isolation.
See Fig 1 for typical installation.
Pressure Regulation:
The hydraulic fluid control reduces the hydraulic oil
pressure to the operating pressure required for the
application.
Flow
Regulation:
The hydraulic fluid control limits the maximum
amount
of oil flow to the motor to keep the hydraulic
motor within the recommended cycle rate limit. This
prevents pump runaway . The limit on the Dyna-
Star
is 60 cpm.
Pump Isolation:
The hydraulic fluid control has ball valves on the sup -
ply
and return sides of the manifold. The ball valves
isolate the hydraulic fluid control and pump for serv -
icing
without stopping the hydraulic power supply .