Graco LD Series User manual

Instructions
LD Series Oil and Grease
Pump 3A1334P
For dispensing non-corrosive and non-abrasive lubricants, oil, grease, and automatic
transmission fluids in stationary or mobile installations. Use with compressed air only. For
professional use only. Not for use with windshield washer fluid.
List of models, including Maximum Fluid Pressure:
•Oil Pump Models: page 2
•Grease Pump Models: page 3
Related Translated Manuals
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
Manual Number Language
3A1339 Spanish
3A1345 French
3A1350 German
3A1360 Russian
3A1365 Chinese
3A1370 Japanese
3A1375 Korean
3A2329 Czech
EN
II 2 G Ex h T6 Gb

Oil Pump Models
23A1334P
Oil Pump Models
All oil models include a 2” npt(m) bung adapter.
PN Description Max air pressure Max Fluid Pressure Air inlet Fluid
Inlet
Fluid
Outlet
3:1 PUMPS psi Mpa bar psi Mpa bar
24G576 Universal 150 1.03 10.3 750 5.17 51.7 1/4"-18
NPT
1"-11.5
NPT
1/2"-14
NPT
24G577 Universal 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPP
1-11
BSPP
1/2"-14
BSPP
24G578 Universal 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPT
1-11
BSPT
1/2”-14
BSPT
24G579* Multilength 150 1.03 10.3 750 5.17 51.7 1/4"-18
NPT
1"-11.5
NPT
1/2"-14
NPT
24G580* Multilength 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPP
1-11
BSPP
1/2"-14
BSPP
24G581* Multilength 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPT
1-11
BSPT
1/2”-14
BSPT
24G582* 200L (55gal) drum 150 1.03 10.3 750 5.17 51.7 1/4"-18
NPT
1"-11.5
NPT
1/2"-14
NPT
24G583* 200L (55gal) drum 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPP
1-11
BSPP
1/2"-14
BSPP
24G584* 200L (55gal) drum 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPT
1-11
BSPT
1/2”-14
BSPT
24G585* 1040 liter (275gal) tote 150 1.03 10.3 750 5.17 51.7 1/4"-18
NPT
1"-11.5
NPT
1/2"-14
NPT
24G586* 1040 liter (275gal) tote 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPP
1-11
BSPP
1/2"-14
BSPP
24G587* 1040 liter (275gal) tote 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPT
1-11
BSPT
1/2”-14
BSPT
5:1 PUMPS psi Mpa bar psi Mpa bar Air inlet Fluid
Inlet
Fluid
Outlet
24G588 Universal 150 1.03 10.3 750 5.17 51.7 1/4"-18
NPT
1"-11.5
NPT
1/2"-14
NPT
24G589 Universal 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPP
1-11
BSPP
1/2"-14
BSPP
24G590 Universal 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPT
1-11
BSPT
1/2”-14
BSPT
24G591* 5:1 Multilength 150 1.03 10.3 750 5.17 51.7 1/4"-18
NPT
1"-11.5
NPT
1/2"-14
NPT
24G592* 5:1 Multilength 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPP
1-11
BSPP
1/2"-14
BSPP
24G593* 5:1 Multilength 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPT
1-11
BSPT
1/2”-14
BSPT
24G594* 200L (55gal) drum 150 1.03 10.3 750 5.17 51.7 1/4"-18
NPT
1"-11.5
NPT
1/2"-14
NPT
24G595* 200L (55gal) drum 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPP
1-11
BSPP
1/2"-14
BSPP
24G596* 200L (55gal) drum 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPT
1-11
BSPT
1/2”-14
BSPT
24G597* 1040 liter (275gal) tote 150 1.03 10.3 750 5.17 51.7 1/4"-18
NPT
1"-11.5
NPT
1/2"-14
NPT
24G598* 1040 liter (275gal) tote 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPP
1-11
BSPP
1/2"-14
BSPP
24G599* 1040 liter (275gal) tote 150 1.03 10.3 750 5.17 51.7 1/4"-19
BSPT
1-11
BSPT
1/2”-14
BSPT
* Includes universal pump and down tube, packaged separately.

Grease Pump Models
3A1334P 3
Grease Pump Models
PN Description Max Air Pressure Max Fluid Pressure Air Inlet Fluid
Inlet
Fluid
Outlet
50:1 PUMPS psi Mpa bar psi Mpa bar
24G600 16kg (35lb) 150 1.03 10.3 7500 51.7 517 1/4"-18
Npt
Priming
piston
1/4"-18
Npt
24G601 16kg (35lb) 150 1.03 10.3 7500 51.7 517 1/4"-19
BSPP
Priming
piston
1/4"-19
BSPP
24G602 16kg (35lb) 150 1.03 10.3 7500 51.7 517 1/4"-19
BSPT
Priming
piston
1/4"-19
BSPT
24G603 55kg (120lb) 150 1.03 10.3 7500 51.7 517 1/4"-18
Npt
Priming
piston
1/4"-18
Npt
24G604 55kg (120lb) 150 1.03 10.3 7500 51.7 517 1/4"-19
BSPP
Priming
piston
1/4"-19
BSPP
24G605 55kg (120lb) 150 1.03 10.3 7500 51.7 517 1/4"-19
BSPT
Priming
piston
1/4"-19
BSPT
24G606 180kg (400lb) 150 1.03 10.3 7500 51.7 517 1/4"-18
Npt
Priming
piston
1/4"-18
Npt
24G607 180kg (400lb) 150 1.03 10.3 7500 51.7 517 1/4"-19
BSPP
Priming
piston
1/4"-19
BSPP
24G608 180kg (400lb) 150 1.03 10.3 7500 51.7 517 1/4"-19
BSPT
Priming
piston
1/4"-19
BSPT
24X871 16kg (35lb) 150 1.03 10.3 7500 51.7 517 1/4"-19
BSPT
Priming
piston
1/4"-19
BSPT

Warnings
43A1334P
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, 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
SKIN INJECTION HAZARD
High-pressure fluid from dispense valve, 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 dispense valve at anyone or at any part of the body.
• Do not put your hand over the end of the dispense nozzle.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow Pressure Relief Procedure in this manual, when you stop spraying 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.
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.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment until
you identify and correct the problem.
• Keep a working fire extinguisher in the work area.

Warnings
3A1334P 5
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
component. 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 forms from distributor or retailer.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Do not alter or modify equipment.
• 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.
PRESSURIZED ALUMINUM PARTS HAZARD
Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious chemical
reaction and equipment rupture. Failure to follow this warning can result in death, serious injury, or
property damage.
• Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents.
• Many other fluids may contain chemicals that can react with aluminum. Contact your material supplier
for compatibility.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating area
of the equipment to help protect you from serious injury, including eye injury, hearing loss, inhalation of
toxic fumes, and burns. This equipment includes but is not limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.
WARNING

Warnings
63A1334P
Typical Installation
The typical installation shown in FIG. 1 is only an installation guide. It is not an actual system design. Contact your
Graco Distributor for assistance in designing a system to suit your needs.
Stationary Mountings
Key (FIG. 1)
A Fluid outlet line (flexible connection required)
BPump
C Ground wire
D Pump runaway valve
E Air lubricator
F Bleed-type master air valve (required)
• NPT - Part No. 110223
• BSP - Part No. 125272
G Air regulator (self-relieving regulator required)
• NPT - Part No. 24H420
• BSP - Part No. 24H419
HAirfilter
J Main air line
K Bung adapter - Part No. 24F918
L Fluid inlet line (flexible connection required)
M Air inlet line (flexible connection required)
N Wall mount bracket - Part No. 24F910
FIG. 1
A
B
D
C
E
F
ti16120
H
G
J
K
M
L
N
F
Recommended
air line
configuration
to reduce
moisture in pump

Installation
3A1334P 7
Installation
NOTE: Reference letters and numbers in parentheses in the text refer to callouts in the figures and drawings.
Grounding
Ground all equipment:
•Pump: Use a ground wire and clamp as shown in
FIG. 2.
a. Remove the ground screw (Z) and insert
through the eye of the ring terminal at end of
ground wire (Y).
b. Fasten the ground screw back onto the pump
and tighten securely.
NOTE: To order a ground wire and clamp, order Graco
Part No. 222011.
•Air and fluid hoses: Use only electrically conductive
hoses.
•Air compressor: Follow manufacturer’s recommen-
dations.
•Dispensing valve: Ground through connection to a
properly grounded fluid hose and pump.
•Object being dispensed to: Follow your local code.
•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 card-
board, which interrupts the grounding continuity.
•To maintain grounding continuity when flushing or
relieving pressure, hold a metal part of the dispens-
ing valve firmly to the side of a grounded metal pail,
then trigger the dispense valve.
Installation Guidelines
Reference letters found in the following instructions,
refer to Typical Installation diagram provided on page 6.
• A ball valve must be installed upstream of the regu-
lator (G).
• The fluid outlet line (A), fluid inlet line (L) and air
inlet line (M) must be flexible (such as a hose).
NOTE: To prevent damage to the pump, remove sedi-
ment from the bottom of the container before installing a
pump on an existing container.
To reduce the risk of static sparking, ground the pump
and all other components used or located in the
dispensing area. Check your local electrical code for
detailed instructions for your area and type of
equipment.
FIG. 2
Z
Y
ti16123

Installation
83A1334P
Stationary Mounting Layout
Plan the layout for easy operator access to the pump air
controls, sufficient room to change drums and a secure
platform.
Pump Mounting
1. Install bung adapter (K) into bung mount/bracket/or
drum cover.
2. Install pump (B) into bung adapter (K).
Installing Outlet Hose (FIG. 3)
1. Connect the swivel adapter (aa) to the pump fluid
outlet. Tighten securely and torque as recom-
mended below:
• For NPT models: 1 to 1-1/2 turns past hand
tight.
• For BSPT models: 1-1/2 to 2 turns past hand
tight.
2. Connect fluid hose (A) to the swivel adapter (aa).
3. Connect a suitable dispensing valve or extra hose to
the 6-ft hose.
Air Line and Accessories
NOTE: Install the air line accessories in the order shown
in the Typical Installation on page 6.
• Use thread sealant on all male threads except
swivel connections.
• Install a pump runaway valve (D) to shut off the air
to the pump if the pump accelerates beyond the
pre-adjusted setting. A pump that runs too fast can
be seriously damaged.
• Install the air regulator (G) to control pump speed
and pressure.
For NPT models order Graco Part No. 24H420 or for
BSP models order Graco Part No. 24H419.
• Install a bleed-type master air valve (F) upstream
from the pump air regulator (G) but within easy
reach of the pump.
For NPT models order Graco Part No. 110223 or for
BSP models order Graco Part No. 125272.
• On the main air supply line from the compressor,
install an air line filter (H) to remove harmful dirt and
contaminants from the compressor air supply.
Follow Plate - Grease Models Only
For grease models only a follow plate is required for
pumping fluid from the drum. See page 11 for follow
plate installation instructions.
The maximum working pressure of each pump in
your system may not be the same. To reduce the risk
of over-pressurizing any part of your system, which
may result in component rupture, fire or explosion
and cause serious bodily injury, be sure you know
the maximum working pressure rating of each pump
and its connected components.
•Never exceed the maximum working pressure of
the lowest rated component connected to a partic-
ular pump.
• Be sure you know the maximum working pressure
of each component.
• Do not exceed the maximum pump cycle rate.
• Regulate air pressure to prevent over pressuriza-
tion at fluid section of the pump.
• Regulate air pressure to the pump so that no fluid
line component or accessory is over pressurized.
FIG. 3
aa
A
K
B
NOTICE
Do not hang the air accessories directly on the air
inlet. Mount them on brackets. Always use a flexible
hose between all connections. The air inlet is not
strong enough to support accessories and may cause
one or more to break.

Operation
3A1334P 9
Operation
Thermal Induced Pressure
Relief (Oil pumps only)
Thermal Relief Theory of Operation
The pump operation is similar to most double acting
reciprocating pumps. The pump only comes to a com-
plete stop on the up stroke. The pump will stroke
through on the down stroke due to the inlet check relief
passage.
Excess pressure due to downstream thermal expansion
causes the air motor/pump to run backwards (down-
ward). Fluid pressure is relieved through the inlet check
relief passage as the pump piston moves downward. Air
pressure is simultaneously relieved through the air inlet
passage. The pump piston moves downward exposing
the pump cylinder relief passage at the bottom of the
stroke. Additional excess pressure is then relieved
through both the inlet check relief passage and the
pump cylinder relief passage.
Pressure is relieved at the pump through the pump inlet
relief passage. The pump will not change over on the
bottom of the stroke as a result of relieving excess pres-
sure due to the positioning of the pump cylinder groove
with respect to the air motor pilot valve.
NOTE:
• The air supply does not have to be turned off to
enable thermal relief activation.
• The Thermal Induced Pressure Relief design fea-
ture of the pump will cause the pump to dive on the
downstroke when a dispensing valve is closed.
THERMAL EXPANSION HAZARD
Fluids subjected to heat in confined spaces, including
hoses, can create a rise in pressure due to the
thermal expansion. Over-pressurization can result in
equipment rupture and serious injury.
Oil pumps have a built-in, thermal induced, pressure
relief as shown in FIG. 4. To ensure system pressure
will automatically bleed excess thermal induced
system pressure through the pump and back to the
oil reservoir:
• Always use a relieving air pressure regulator to
allow the pump/motor to run backwards. The regu-
lator bleeds excess air pressure.
• There should not be any obstructions between air
inlet of pump and regulator.
• There should not be any obstructions between the
downstream plumbing and pump outlet such as
closed ball valves or check valves.
• There should not be any obstructions between the
pump inlet and fluid container such as closed ball
valves or check valves.
• Only use Graco designed suction tubes for in-drum
or in-tank applications.
• Only use Graco designed suction tubes with a
built-in relief device for wall mount applications.
• Always use an inlet screen to prevent debris from
plugging relief passages from entering the pump.
- Do not operate the pump with out an inlet screen.
• Periodically inspect the inlet screen for plugging.
Graco recommends inspecting the inlet screen
every time the container is changed out.
FIG. 4 a = Pump cylinder relief passage
b = Inlet check relief passage
a
b

Operation
10 3A1334P
Install only one pump per delivery system. Do not use
the pumps in a parallel pump installation.
Loss of pump prime can occur if all the following events
occur in sequence:
1. A thermal relief event occurs.
2. The air supply valve is closed.
3. A dispense valve located at an elevation higher than
the tank level, is open.
To prevent loss of prime, ensure the air supply valve is
turned on before attempting to dispense fluid.
Pressure Relief Procedure
1. Close the pump’s bleed-type master air valve.
2. Close the pump air regulator and disconnect the air
supply hose.
3. Open the dispensing valve and dispense fluid into a
waste bucket/container until pressure is fully
relieved.
If you suspect that the dispensing valve is clogged, or
that pressure has not been fully relieved after following
the steps above, very slowly loosen the dispensing
valve coupler or hose end coupling to relieve pressure
gradually, then loosen completely.
Start-up
Determining Output Pressure Using the Air
Regulator
To determine the fluid output pressure using the air reg-
ulator reading, multiply the ratio of the pump by the air
pressure shown on the regulator.
For example a 3:1 ratio oil pump:
3:1 ratio x 100 psi air = 300 psi fluid outlet
A 3:1 pump is capable of 5:1 on the downstroke and will
develop 5:1 pressures under normal operation.
A grease pump has a ratio of 50:1. However it is capable
of reaching a stall pressure equal to 60 times the air
input pressure. To calculate the fluid output pressure
using the air regulator reading, multiply the regulator
gauge by 60.
For example:
140 psi air x 60 = 8400 psi fluid output
0.97 MPa air x 60 = 58.2 MPa
99.7 bar x 60 = 582 bar
Regulate air to the pump so that no air line or fluid line
component or accessory is over pressurized.
Priming the pump
1. Close the air regulators and bleed-type master air
valves to all but one pump.
2. Open the master air valve from the compressor.
3. For the pump that is connected, trigger the dispens-
ing valve into a grounded metal waste container
making firm, metal-to-metal contact between the
container and the valve.
4. Slowly open the bleed-type master air valve and
open the pump air regulator just until the pump is
running. When the pump is primed and all air has
been pushed out of the lines, release the trigger.
5. If you have more than one pump, repeat this pro-
cess for each pump in your system.
NOTE: When the pump is primed and has sufficient
air supplied to it, it starts when the dispensing valve
is open and shuts off when closed.
The equipment stays pressurized until pressure is
manually relieved. To reduce the risk of serious injury
from pressurized fluid, fluid from the valve, or splash-
ing fluid, follow this procedure whenever you:
• are instructed to relieve pressure
• stop dispensing
• check, clean, or service any system equip-
ment
• install or clean dispensing devices.