Graco 236864 User manual

Instructions
Hydraulic Fluid
Controls 308395D
EN
Regulates hydraulic pressure and flow when used with Graco’s Dyna-Star™and
Power-Star™hydraulic-powered lubricant pumps. For professional use only.
Model 236864
Used with Dyna-Star™
1500 psi (10.5 MPa, 105 bar) Maximum Working Pres-
sure
3 gpm (11 liters/min) Maximum Flow Rate
Model 236865
Used with Power-Star™
1500 psi (10.5 MPa, 150 bar) Maximum Working Pres-
sure
12 gpm (45 liters/min) Maximum Flow Rate
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
Hydraulic fluid controls are designed to control
hydraulic fluids only in a hydraulic power system. Any
other fluids can cause unsafe operating conditions
and results in component rupture, fire, or explosion
which could result in serious injury, including fluid
injection.
Model 236865
Model 236864

Warnings
2308395D
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When
these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific
hazard symbols and warnings not covered in this section may appear throughout the body of this manual where
applicable.
WARNING
FIRE AND EXPLOSION HAZARD
When flammable fluids are present in the work area, such as gasoline and windshield wiper fluid, be
aware that flammable fumes can ignite or explode. To help prevent fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources, such as cigarettes and portable electric lamps.
• Keep work area free of debris, including rags and spilled or open containers of solvent and gasoline.
• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
• Ground all equipment in the work area.
• Use only grounded hoses.
•Stop operation immediately if static sparking occurs or you feel a shock.Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
SKIN INJECTION HAZARD
High-pressure fluid from dispensing device, hose leaks, or ruptured components will pierce skin. This
may look like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical
treatment.
• Do not point dispensing device at anyone or at any part of the body.
• Do not put your hand over the fluid outlet.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow the Pressure Relief Procedure when you stop dispensing and before cleaning, checking, or
servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses and couplings daily. Replace worn or damaged parts immediately.

Warnings
308395D 3
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system com-
ponent. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information about
your material, request MSDS from distributor or retailer.
• Do not leave the work area while equipment is energized or under pressure.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manu-
facturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and create
safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swal-
lowed.
• Read MSDSs to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
• Always wear chemically impermeable gloves when spraying, dispensing, or cleaning equipment.
WARNING

Installation
4308395D
Installation
Grounding
Pump: use ground wire and clamp (supplied). Loosen
grounding lug locknut (W) and washer (V). Insert one
end of a 12 ga (1.5 mm2) minimum ground wire (Y) into
the slot in lug (Z) and tighten the locknut securely. Con-
nect the other end of the wire to a true earth ground.
Order Part No. 237569 Ground Wire and Clamp.
Hydraulic Hoses and Fluid Outlet Hoses: use only
electrically conductive hoses.
Hydraulic Power Supply and Air Compressor: follow
manufacturer’s recommendations.
Any pails used when flushing: use only metal
grounded pails when flushing. Make firm metal-to-metal
contact between a metal part of the dispense valve and
the pail. Use the lowest possible pressure.
The equipment must be grounded to reduce the risk
of static sparking and electric shock. Electric or static
sparking can cause fumes to ignite or explode.
Improper grounding can cause electric shock.
Grounding provides an escape wire for the electric
current.
FIG. 1
ZV W
Y

Installation
308395D 5
Typical Installation
Key:
A Hydraulic Control, 236864
B Hydraulic Control, 236865
C Hydraulic Return Line
D Hydraulic Outlet, 3/4 npsm (A), 1 1/4 npsm(B)
E Return Line Shutoff Valve
F Hydraulic Inlet, 3/8 npsm (A), 3/4 npsm (B)
G Supply Line Shutoff Valve
H Pressure Gauge
J Pressure Reducing Valve
K Flow Control Valve
L Hydraulic Supply Line (use only Graco hydraulic power
supply)
Hydraulic Fluid Control: The hydraulic fluid control pro-
vides pressure regulation, flow regulation, and pump
isolation. See the Typical Installation as a guide. For
assistance in designing a system to suit your needs,
contact your Graco Representative.
Pressure Regulation: The hydraulic fluid control pres-
sure reducing valve (J) reduces the hydraulic oil pres-
sure to the operating pressure required for application.
Flow Regulation: The hydraulic fluid control valve (K)
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. The limit on the Power-Star™is
66 cpm.
Pump Isolation: The hydraulic fluid control (A and B) has
ball valves on the supply and return sides of the mani-
fold. The ball valves isolate the hydraulic fluid control
and pump for servicing without stopping the hydraulic
power source.
FIG. 2: Typical Installation
L
C
G
E
H
K
A
F
D
J
D
LC
E
H
B
G
F
K
J
Model 236865
Model 236864

Installation
6308395D
Installation Notes
• Blow out all hydraulic lines with air, flush thoroughly
with solvent, and then blow out the air again before
connecting the lines to the reciprocator.
Hydraulic Power Supply
Hydraulic Components
• Do not kink hoses. Adjust swivel connections if nec-
essary.
• Always use permanently coupled electrically con-
ductive hoses.
• Refer to the application data from Graco to make
determinations as to the location and height to
mount the control.
Recommended Hydraulic Oil
Use Graco approved Hydraulic Oil or a premium ISO
grade 46 petroleum-based hydraulic oil containing rust
and oxidation inhibitors and anti-wear agents.
• Before using any other type of oil in this control,
contact your Graco distributor. Unauthorized use of
lesser grade oil or substitutes may void the warranty.
• See Technical Data on page 12 for hydraulic oil
working temperatures.
NOTICE
The hydraulic supply system must be kept clean at all
times to reduce the risk of damaging the reciprocator
hydraulic power supply.
To reduce the risk of over pressurizing the hydraulic
reciprocator, which could cause a rupture and
serious injury, including fluid injection, the hydraulic
power must have a means to limit the incoming fluid
flow to the reciprocator to a maximum of 3 gpm (11
liter/min) at 1500 psi (10.5 MPa, 105 bar) for the
Dyna-Star™and 10 gpm (37 liter/min) at 1500 psi
(10.5 MPa, 105 bar) for the Power-Star™.
• Always turn off the supply side valve (G) to avoid
possible serious injury or component damage.
See the Typical Installation on page 5.
Maximum Working Pressure of Accessories
• To reduce the risk of serious 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 1500 psi (10.5
MPa, 105 bar) maximum working pressure and
those to the pump fluid outlet side must have at
least a 375 psi (2.6 MPa, 26 bar) maximum
working pressure for Dyna-Star™and 1500 psi
(10.5 MPa, 105 bar) for the Power-Star™.

Operation
308395D 7
Operation
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Close the supply line shutoff valve (G), and then
return line shutoff valve (E).
2. Hold open the dispensing valve to relieve pressure.
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
pump again.
If you suspect that the dispensing 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 and relieve pres-
sure gradually then loosen completely, now clear the
obstruction.
Emergency Stop Procedure
Close the red-marked supply line shutoff valve marked
STOP.
Before Starting the Pump
When starting up the hydraulic system, open the return
line shutoff valve (E) first.
Hydraulic Fluid Level Check
Check the hydraulic fluid level in the hydraulic power
supply before each use, and add fluid as necessary to
fill the lines.
Starting the Pump
• Never exceed 1500 psi (10.5 MPa, 105 bar) Maxi-
mum Hydraulic Pressure to the control.
• Never exceed 375 psi (2.6 MPa, 26 bar) Maximum
Outlet Pressure from the control when used with a
1/4:1 Dyna-Star™pump.
• Never exceed 1500 psi (10.5 MPa, 105 bar) Maxi-
mum Outlet Pressure from the control when used
with a 1:1 Power-Star™pump.
• Be sure all accessories added to the reciprocator
power supply side of the control are capable of at
least 1500 psi (10.5 MPa, 105 bar) maximum work-
ing pressure and all of those for the pump fluid out-
let side of the control have at least 375 psi (2.6 MPa,
26 bar) maximum working pressure for Dyna-Star™
and 1500 psi (10.5 MPa, 105 bar) for Power-Star™.
1. Turn on hydraulic power supply.
2. Open the return line shutoff valve (E) first and slowly
open the hydraulic supply shutoff valve (G).
3. Remove the cap on the pressure reducing valve to
reveal the cap screw adjustment.
4. Adjust the hydraulic inlet pressure from 50 to 1500
psi (0.3 to 10.5 MPa, 3 to 105 bar) with an allen
wrench inserted in the regulator pressure control
adjustment on the pressure reducing valve (J).
Increasing the inlet pressure (clockwise) increases
the pump outlet pressure. Decreasing the inlet pres-
sure (counter clockwise) decreases the pump outlet
pressure.
5. Always use the lowest pressure possible to obtain
the desired results. This reduces pump wear.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.

Repair
8308395D
Shutdown
Always shut off the supply line shutoff valve (E) first, and
then the return line shutoff valve (G). This is to prevent
over pressurizing the reciprocator or its seals. When
starting the hydraulic system, open the return line shut-
off valve (G) first. See page 5.
Repair
There are two basic repairs to the hydraulic fluid control;
pressure control repair and flow control repair.
Pressure Control Repair
1. Relieve pressure, see page 7.
2. Remove the pressure reducing valve (J).
3. Clean the pressure reducing valve (J) with a com-
patible solvent.
4. Install the pressure reducing valve in the control.
5. Try the system with the clean valve. Follow the
Starting the Pump procedure on page 7.
6. If the control still does not regulate the pressure
properly, replace the valve.
Flow Control Repair
1. Relieve pressure, see page 7.
2. Remove the flow control valve (K).
3. Clean the flow control valve (K) with compatible sol-
vent.
4. Install the flow control valve in the control.
5. Try the system with the clean valve. Follow the
Starting the Pump procedure on page 7.
6. If the control still does not control the flow properly,
replace the valve.

Troubleshooting
308395D 9
Troubleshooting
Problem Cause Solution
No pressure on gauge, or low pres-
sure on gauge
Hydraulic power supply malfunction
or mis-adjustment
Adjust the hydraulic power supply. If
the problem remains, refer to the
hydraulic power supply instruction
manual.
Pressure reducing valve is backed
out
Adjust the pressure reducing valve.
Can’t adjust pressure with the pres-
sure reducing valve
Clogged valve Clean the pressure reducing valve.
Insufficient hydraulic power supply
pressure
Adjust the hydraulic power supply
pressure. If problem remains refer
to the hydraulic power supply
instruction manual.
Gauge will not re-zero with the
hydraulic supply and return line
shutoff valves closed
Leak in the supply line shutoff valve
(G)
Open the return line shutoff valve
(E) to remove pressure.
Damaged gauge Replace gauge.
Pump runs away Contaminated flow control valve Remove and clean the flow control
valve.

Parts
10 308395D
Parts
Model 236864 Hydraulic Fluid Control
113a
113b
111
105
104
108
109
106
102
112
107
113 Includes items
113a & 113b
103
1110
110
103
Ref. Part Description Qty.
102 108537 VALVE, ball 1
103 112714 HOSE, coupled, 3 ft 2
104 112567 GAUGE, pressure, fluid 1
105 112578 VALVE, ball 1
106 112581 SWIVEL, union, 90° 1
107 112705 SWIVEL, union, 90° 1
108 112707 ADAPTER, male 1
109 112708 ADAPTER, male 1
110 112715 HOUSE, couple, 3 ft 2
111 155494 UNION, swivel, 90° 1
112 160327 UNION, swivel, 90° 1
113 189837 MANIFOLD, 3 gpm, includes
replaceable items 113a and 113b
1
113a 119902 VALVE, pressure reducing 1
113b 112712 VALVE, flow regulating, 3 gpm 1
Ref. Part Description Qty.