Graco PD44 Troubleshooting guide

313876L
EN
Operation - Maintenance
PD44
Metering Valves and Feed Systems
Meter, mix, and dispense system for precise two-component micro-dispensing of sealants
and adhesives.
Not approved for use in European explosive atmosphere locations.
See page 3 for model information, including maximum
working pressure and approvals. See page 7 for prod-
uct configuration information.
Important Safety Instructions
Read all warnings and instructions in this man-
ual. Save these instructions.
Linear Resistive Transducer PD44 Meter-
ing Valve shown, Feed Systems not shown

2313876L
Contents
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Isocyanate Conditions . . . . . . . . . . . . . . . . . . . . . . 6
Material Self-ignition . . . . . . . . . . . . . . . . . . . . . . . 6
Moisture Sensitivity of Isocyanates . . . . . . . . . . . . 6
Keep Components A and B Separate . . . . . . . . . . 6
Foam Resins with 245 fa Blowing Agents . . . . . . . 6
Changing Materials . . . . . . . . . . . . . . . . . . . . . . . . . 6
Product Configurator . . . . . . . . . . . . . . . . . . . . . . . 7
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Component Identification . . . . . . . . . . . . . . . . . . . 13
Typical System Configurations . . . . . . . . . . . . 13
Typical Feed System Components . . . . . . . . . 14
Micrometer PD44 Metering Valve . . . . . . . . . . . 15
LRT PD44 Metering Valve . . . . . . . . . . . . . . . . 16
Motor Driven PD44 Metering Valve . . . . . . . . . 17
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Typical Installation . . . . . . . . . . . . . . . . . . . . . . 18
Tank Level Sensor Wiring Schematic . . . . . . . . 19
Valve Mounting Diagram . . . . . . . . . . . . . . . . . . 19
Motor Mounting Diagram . . . . . . . . . . . . . . . . . 20
Custom Drive Mounting Diagram . . . . . . . . . . . 20
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Adjusting the Shot Size . . . . . . . . . . . . . . . . . . . . . 22
Micrometer PD44 Only . . . . . . . . . . . . . . . . . . . 22
LRT and Motor Driven PD44 . . . . . . . . . . . . . . . 22
Ratio Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Sequence of Operation . . . . . . . . . . . . . . . . . . . 24
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . 25
Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Rebuild . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Wetted Section Disassembly . . . . . . . . . . . . . . . 27
Wetted Section Reassembly . . . . . . . . . . . . . . . 29
Spool Valve Rebuild . . . . . . . . . . . . . . . . . . . . . 30
Wetted Section Rebuild . . . . . . . . . . . . . . . . . . . 31
Micrometer Drive Rebuild
(Micrometer PD44 Only) . . . . . . . . . . . . . . . 34
Electrical Requirements . . . . . . . . . . . . . . . . . . . . 36
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
California Proposition 65 . . . . . . . . . . . . . . . . . . . 40
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 42
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 42

Related Manuals
313876L 3
Related Manuals
Manuals are available at www.graco.com
Component manuals in U.S. English.
Models
* If a custom PD44 is ordered, it will not be CE
approved unless otherwise noted.
PD44 Manuals
Part Description
313877 PD44 Control Box Setup - Operation
3A0987 PD44 Parts
Feed System Manuals
306565 Air-Driven, Stainless Steel Agitators
307043 Monark®Air Motor
308116 Severe-Duty, UHMWPE/PTFE or PTFE
Packed Stainless Steel Pumps
308167 Low Volume Air Regulators
308168 High Volume Air Regulators
308169 Air Filters, Lubricators and Kits
309306 Air-Operated Husky™Diaphragm Pumps
312376 Stainless Steel Agitator Kit
313526 Check-Mate®Pump Packages
3A1452 20 oz Cartridge
Metering Valve
Model
Max Outlet
Fluid Working
Pressure
psi (MPa, bar)
Max Air
Working
Pressure
psi (MPa, bar)
Max Inlet Working Pressure
psi (MPa, bar)
CE
Approved*Metal Sleeves Plastic Sleeves
Linear Resistive
Transducer (LRT)
2000 (14, 138) 100 (0.7, 7) 1200 (8, 83) 400 (2.8, 28) 
Micrometer 2000 (14, 138) 100 (0.7, 7) 1200 (8, 83) 400 (2.8, 28) 
Motor Driven 2000 (14, 138) 100 (0.7, 7) 1200 (8, 83) 400 (2.8, 28) 

Warnings
4313876L
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 symbol refers to procedure-specific risk. Refer back
to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where
applicable.
WARNING
SKIN INJECTION HAZARD
High-pressure fluid from gun, 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 gun at anyone or at any part of the body.
• Do not put your hand over the dispense outlet.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow Pressure Relief Procedure in this manual, when you stop dispensing and before cleaning,
checking, or servicing equipment.
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
swallowed.
• Read MSDS’s 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 impervious gloves when spraying or cleaning equipment.
• If this equipment is used with isocyanate material, see additional information on isocyanates in Iso-
cyanate Conditions Section of this manual.
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, inhalation of toxic
fumes, burns, and hearing loss. This equipment includes but is not limited to:
• Protective eyewear
• Clothing and respirator as recommended by the fluid and solvent manufacturer
• Gloves
• Hearing protection
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.
• Ground all equipment in the work area. See Grounding instructions.
• 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
313876L 5
ELECTRIC SHOCK HAZARD
This equipment must be grounded. Improper grounding, setup, or usage of the system can cause elec-
tric shock.
• Turn off and disconnect power cord before servicing equipment.
• Use only grounded electrical outlets.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on power and extension cords.
• Do not expose to rain. Store indoors.
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.
• Do not leave the work area while equipment is energized or under pressure. Turn off all equipment
and follow the Pressure Relief Procedure in this manual 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.
• 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.
MOVING PARTS HAZARD
Moving parts can pinch or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,
follow the Pressure Relief Procedure in this manual. Disconnect power or air supply.
PLASTIC PARTS CLEANING SOLVENT HAZARD
Use only compatible water-based solvents to clean plastic structural or pressure-containing parts. Many
solvents can degrade plastic parts and cause them to fail, which could cause serious injury or property
damage. See Technical Data in this and all other equipment instruction manuals. Read fluid and solvent
manufacturer’s warnings.
WARNING

Isocyanate Conditions
6313876L
Isocyanate Conditions
Material Self-ignition
Moisture Sensitivity of
Isocyanates
Isocyanates (ISO) are catalysts used in two component
foam and polyurea coatings. ISO will react with moisture
(such as humidity) to form small, hard, abrasive crystals,
which become suspended in the fluid. Eventually a film
will form on the surface and the ISO will begin to gel,
increasing in viscosity. If used, this partially cured ISO
will reduce performance and the life of all wetted parts.
NOTE: The amount of film formation and rate of crystal-
lization varies depending on the blend of ISO, the
humidity, and the temperature.
To prevent exposing ISO to moisture:
• Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere. Never
store ISO in an open container.
• Keep the ISO lube pump reservoir (if installed) filled
with Graco Throat Seal Liquid (TSL™), Part 206994.
The lubricant creates a barrier between the ISO and
the atmosphere.
• Use moisture-proof hoses specifically designed for
ISO, such as those supplied with your system.
• Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
• Never use solvent on one side if it has been con-
taminated from the other side.
• Always lubricate threaded parts with ISO pump oil
or grease when reassembling.
Keep Components A and
B Separate
Foam Resins with 245 fa
Blowing Agents
Some foam blowing agents will froth at temperatures
above 90°F (33°C) when not under pressure, especially
if agitated. To reduce frothing, minimize preheating in a
circulation system.
Changing Materials
• When changing materials, flush the equipment mul-
tiple times to ensure it is thoroughly clean.
• Always clean the fluid inlet strainers after flushing.
• Check with your material manufacturer for chemical
compatibility.
• Most materials use ISO on the A side, but some use
ISO on the B side.
• Epoxies often have amines on the B (hardener)
side. Polyureas often have amines on the B (resin)
side.
Spraying or dispensing materials containing isocya-
nates creates potentially harmful mists, vapors, and
atomized particulates.
Read material manufacturer’s warnings and material
MSDS to know specific hazards and precautions
related to isocyanates.
Prevent inhalation of isocyanate mists, vapors, and
atomized particulates by providing sufficient ventila-
tion in the work area. If sufficient ventilation is not
available, a supplied-air respirator is required for
everyone in the work area.
To prevent contact with isocyanates, appropriate per-
sonal protective equipment, including chemically
impermeable gloves, boots, aprons, and goggles, is
also required for everyone in the work area.
Some materials may become self-igniting if applied
too thickly. Read material manufacturer’s warnings
and material MSDS.
NOTICE
To prevent cross-contamination of the equipment’s
wetted parts, never interchange component A (isocy-
anate) and component B (resin) parts.

Product Configurator
313876L 7
Product Configurator
This system can be ordered with many different options as shown in the configurator below.
The following table applies to the PD44 configurations and indicates all of the options available for each letter shown
above.
PD44 C-A-BCD-EFG- H - I -J-K-L-M-NO-P-Q-RS-T-U-V-W- X
Configurator Series Level Base Unit High Volume Rod Material, Size Low Volume Rod Material, Size High Volume Spool Low Volume Spool Outlet Nose Mixer Controls Power Cord High Volume Feed High Volume Feed Hose High Volume Feed Options Low Volume Feed Low Volume Feed Hose Low Volume Feed Options Vacuum Pump(s) Bench Stand Seal Lubricant
Code A Part Base Unit
A964000 Micrometer PD44
B964001 Linear Resistive Transducer PD44
C 964002 Motor Driven PD44
Code B Part High Volume Rod Material
NOTE: See code CD for last two digits of part number
A9641__ Hardened Steel
B9642__ Stainless Steel, UHMW
C9643__ Tungsten Carbide, UHMW
Code
CD Part High Volume Rod Size
NOTE: See code B for first four digits of part number
01 ____01 1.25 mm rod diameter
02 ____02 1.38 mm rod diameter
03 ____03 1.50 mm rod diameter
04 ____04 1.63 mm rod diameter
05 ____05 1.75 mm rod diameter
06 ____06 2.00 mm rod diameter
07 ____07 2.13 mm rod diameter
08 ____08 2.25 mm rod diameter
09 ____09 2.38 mm rod diameter
10 ____10 2.50 mm rod diameter
11 ____11 2.63 mm rod diameter
12 ____12 2.75 mm rod diameter
13 ____13 3.00 mm rod diameter
14 ____14 3.13 mm rod diameter
15 ____15 3.25 mm rod diameter
16 ____16 3.38 mm rod diameter
17 ____17 3.50 mm rod diameter
18 ____18 3.63 mm rod diameter
19 ____19 3.75 mm rod diameter
20 ____20 4.00 mm rod diameter
21 ____21 4.25 mm rod diameter
22 ____22 4.50 mm rod diameter
23 ____23 4.63 mm rod diameter
24 ____24 4.75 mm rod diameter
25 ____25 4.88 mm rod diameter
26 ____26 5.00 mm rod diameter
27 ____27 5.13 mm rod diameter
28 ____28 5.25 mm rod diameter
29 ____29 5.50 mm rod diameter
30 ____30 5.75 mm rod diameter
31 ____31 6.00 mm rod diameter
32 ____32 6.13 mm rod diameter
33 ____33 6.25 mm rod diameter
34 ____34 6.38 mm rod diameter
35 ____35 6.50 mm rod diameter
36 ____36 6.63 mm rod diameter
37 ____37 6.75 mm rod diameter
38 ____38 7.00 mm rod diameter
39 ____39 7.25 mm rod diameter
40 ____40 7.50 mm rod diameter
41 ____41 7.63 mm rod diameter
42 ____42 7.75 mm rod diameter
43 ____43 7.88 mm rod diameter
44 ____44 8.00 mm rod diameter

Product Configurator
8313876L
Code E Part Low Volume Rod Material
NOTE: See code FG for last two digits of part number
A9641__ Hardened Steel
B9642__ Stainless Steel, UHMW
C9643__ Tungsten Carbide, UHMW
Code FG Part Low Volume Rod Size
NOTE: See code E for first four digits of part number
01 ____01 1.25 mm rod diameter
02 ____02 1.38 mm rod diameter
03 ____03 1.50 mm rod diameter
04 ____04 1.63 mm rod diameter
05 ____05 1.75 mm rod diameter
06 ____06 2.00 mm rod diameter
07 ____07 2.13 mm rod diameter
08 ____08 2.25 mm rod diameter
09 ____09 2.38 mm rod diameter
10 ____10 2.50 mm rod diameter
11 ____11 2.63 mm rod diameter
12 ____12 2.75 mm rod diameter
13 ____13 3.00 mm rod diameter
14 ____14 3.13 mm rod diameter
15 ____15 3.25 mm rod diameter
16 ____16 3.38 mm rod diameter
17 ____17 3.50 mm rod diameter
18 ____18 3.63 mm rod diameter
19 ____19 3.75 mm rod diameter
20 ____20 4.00 mm rod diameter
21 ____21 4.25 mm rod diameter
22 ____22 4.50 mm rod diameter
23 ____23 4.63 mm rod diameter
24 ____24 4.75 mm rod diameter
25 ____25 4.88 mm rod diameter
26 ____26 5.00 mm rod diameter
27 ____27 5.13 mm rod diameter
28 ____28 5.25 mm rod diameter
29 ____29 5.50 mm rod diameter
30 ____30 5.75 mm rod diameter
31 ____31 6.00 mm rod diameter
32 ____32 6.13 mm rod diameter
33 ____33 6.25 mm rod diameter
34 ____34 6.38 mm rod diameter
35 ____35 6.50 mm rod diameter
36 ____36 6.63 mm rod diameter
37 ____37 6.75 mm rod diameter
38 ____38 7.00 mm rod diameter
39 ____39 7.25 mm rod diameter
40 ____40 7.50 mm rod diameter
41 ____41 7.63 mm rod diameter
42 ____42 7.75 mm rod diameter
43 ____43 7.88 mm rod diameter
44 ____44 8.00 mm rod diameter
Code H Part High Volume Spool
1964003 High viscosity, HS
2964004 High viscosity, Stainless Steel/UHMWPE
3964005 High viscosity, TC/UHMWPE
4964006 Low viscosity, Stainless Steel
Code I Part Low Volume Spool
1964011 High viscosity, HS
2964012 High viscosity, Stainless Steel/UHMWPE
3964013 High viscosity, TC/UHMWPE
4964014 Low viscosity, Stainless Steel
Code J Part Outlet Nose
1964020 Luer lock, equal ports, no check valves
2964021 Luer lock, equal ports, dual check valves
3964022 Equal ports, 7/8-9, no check valves
4964023 Large and small ports, 7/8-9, no check
valves
5964024 Large and small ports, 7/8-9, single
check valve
6964025 Dual small ports, 7/8-9, no check valves
7964026 Dual small ports, 7/8-9 dual check valves
Code K Part Mixer
1964027 1/8-24 Luer Lock inlet and outlet, 0.5 cc
2964028 3/16-32 bell mouth inlet, luer lock outlet,
2.0 cc
3964029 1/4-24 bell mouth inlet, luer lock outlet,
4.0 cc
4964030 1/4-32 bell mouth inlet, luer lock outlet,
5.5 cc
5964031 1/4-48 bell mouth inlet, luer lock outlet,
8.0 cc
6964032 3/16-32 bell mouth inlet, tapered outlet,
1.5 cc
7964033 1/4-24 bell mouth inlet, tapered outlet,
3.5 cc
8964034 3/16-24 bell mouth inlet, tapered outlet,
1.0 cc

Product Configurator
313876L 9
Code L Part Controls
1964035 Pneumatic, micrometer, wire harness
only
2964036 Pneumatic, micrometer, HMI controls,
low level
3964037 Pneumatic, micrometer, HMI controls,
low level, I/O package
4964038 Pneumatic, micrometer, HMI controls,
low level, high level
5964039 Pneumatic, micrometer, HMI controls,
low level, high level, I/O package
6964040 Pneumatic, linear resistive transducer,
wire harness only
7964041 Pneumatic, linear resistive transducer,
HMI controls, low level
8964042 Pneumatic, linear resistive transducer,
HMI controls, low level, I/O package
9964043 Pneumatic, linear resistive transducer,
HMI controls, low level, high level
A964044 Pneumatic, linear resistive transducer,
HMI controls, low level, high level, I/O
package
B964045 Motor driven, I/O, wire harness only
C964046 Stepper motor, HMI control, low level,
high level, I/O package
Code M Part Power Cord
1121055 120 VAC, North American cord set
2121054 250 VAC, 1 phase, no plug
3121056 10 amp, 250 volt, continental Europe
4121057 10 amp, 250 volt, United Kingdom and
Ireland
5121058 10 amp, 250 volt, Israel
6124864 10 amp, 250 volt, Australia
7124861 10 amp, 250 volt, Italy
8124863 10 amp, 250 volt, Switzerland
9124862 10 amp, 250 volt, Denmark
A121060 10 amp, 250 volt, India
N-- None
Code
NO Part High Volume Feed
01 964050 20 oz cartridge feed with mounting post
02 964051 1 gallon pail Ram and transfer pump
03 964052 5 gallon pail cover with diaphragm pump
04 964053 5 gallon pail cover diaphragm pump and
agitator
05 964054 5 gallon pail cover and 5:1 transfer pump
06 964055 5 gallon pail cover, 1:1 pump with dip
tube for moisture sensitive materials
07 964056 5 gallon single post Ram with 11:1 pump,
mild steel
08 964057 5 gallon single post Ram with 11:1 pump,
stainless steel
NN -- None
Code P Part High Volume Feed Hose
1964082 1/2 in. x 8 ft PTFE and stainless steel
hose, stainless steel fittings
3964084 1/2 in. x 10 ft PTFE and stainless steel
hose, stainless steel fittings
5964086 1/2 in. x 15 ft PTFE and stainless steel
hose, stainless steel fittings
N-- None
Code Q Part High Volume Feed
C964090 Low level sensor 11:1 Ram only
N-- None
Code RS Part Low Volume Feed
01 964050 20 oz cartridge feed with mounting post
02 964051 1 gallon pail Ram and transfer pump
03 964052 5 gallon pail cover with diaphragm pump
04 964053 5 gallon pail cover diaphragm pump and
agitator
05 964054 5 gallon pail cover and 5:1 transfer pump
06 964055 5 gallon pail cover, 1:1 pump with dip
tube for moisture sensitive materials
07 964056 5 gallon single post Ram with 11:1 pump,
mild steel
08 964057 5 gallon single post Ram with 11:1 pump,
stainless steel
NN -- None
Code T Part Low Volume Feed Hose
1964082 1/2 in. x 8 ft PTFE and stainless steel
hose, stainless steel fittings
3964084 1/2 in. x 10 ft PTFE and stainless steel
hose, stainless steel fittings
5964086 1/2 in. x 15 ft PTFE and stainless steel
hose, stainless steel fittings
7-- None
Code U Part Low Volume Feed
C964090 Low level sensor 11:1 Ram only
N-- None
Code V Part Vacuum Pump(s)
N-- None
Code W Part Bench Stand
A964095 Adjustable height bench stand
N-- None
Code X Part Seal Lubricant
T206994 Fluid, TSL, 8 ounce bottle

Accessories
10 313876L
Accessories
Mixer Kits with Shroud
Mixer Packs
Part Description
964034 Mixer, Kit, 3/16 in. (4.8mm) x 24, 10
taper tip mixers with shroud
964032 Mixer, Kit, 3/16 in. (4.8mm) x 32, 10
taper tip mixers with shroud
964028 Mixer, Kit, 3/16 in. (4.8mm) x 32, 10
Luer Lock tip mixers with shroud/sleeve
964033 Mixer, Kit, 1/4 in. (6.5mm) x 24, 10
taper tip mixers with shroud
964029 Mixer, Kit, 1/4 in. (6.5mm) x 24, 10 Luer
Lock tip mixers with shroud/sleeve
964030 Mixer, Kit, 1/4 in. (6.5mm) x 32, 10 Luer
Lock tip mixers with shroud/sleeve
964031 Mixer, Kit, 1/4 in. (6.5mm) x 48, 10 Luer
Lock tip mixers with shroud/sleeve
Part Description
964027 Mixer, 1/8 in. (3.2mm) x 24 Luer Lock
inlet/tip, 10 Pack
16D962 Mixer, 1/8 in. (3.2mm) x 24 Luer Lock
inlet/tip, 50 Pack
16D963 Mixer, 1/8 in. (3.2mm) x 24 Luer Lock
inlet/tip, 250 Pack
16D978 Mixer, 3/16 in. (4.8mm) x 24 taper tip,
50 Pack
16D979 Mixer, 3/16 in. (4.8mm) x 24 taper tip,
250 Pack
LC0077 Mixer, 3/16 in. (4.8mm) x 32 taper tip,
50 Pack
LC0084 Mixer, 3/16 in. (4.8mm) x 32 taper tip,
250 Pack
LC0082 Mixer, 3/16 in. (4.8mm) x 32 Luer Lock
tip, 50 Pack
LC0089 Mixer, 3/16 in. (4.8mm) x 32 Luer Lock
tip, 250 Pack
LC0078 Mixer, 1/4 in. (6.5mm) x 24 taper tip
mixer, 50 Pack
LC0085 Mixer, 1/4 in. (6.5mm) x 24 taper tip
mixer, 250 Pack
LC0083 Mixer, 1/4 in. (6.5mm) x 24 Luer Lock
tip, 50 Pack
LC0090 Mixer, 1/4 in. (6.5mm) x 24 Luer Lock
tip, 250 Pack
16D968 Mixer, 1/4 in. (6.5mm) x 32 Luer Lock
tip, 50 Pack
16D969 Mixer, 1/4 in. (6.5mm) x 32 Luer Lock
tip, 250 Pack
16D970 Mixer, 1/4 in. (6.5mm) x 48 Luer Lock
tip, 50 Pack
16D973 Mixer, 1/4 in. (6.5mm) x 48 Luer Lock
tip, 250 Pack
Part Description

Accessories
313876L 11
O-Rings and Seals
Needles
Part Description
24E247 Kit, O-ring, chemical resistant, PD44
24E248 Kit, Seal, Spool, H.V., PD44
24E249 Kit, Seal, Spool, L.V., PD44
16B265 Seal, Posipack, 1.25, ZAP
16B266 Seal, Posipack, 1.38, ZAP
16B267 Seal, Posipack, 1.50, ZAP
16B268 Seal, Posipack, 1.63, ZAP
16B269 Seal, Posipack, 1.75, ZAP
16B270 Seal, Posipack, 2.00, ZAP
16B271 Seal, Posipack, 2.13, ZAP
16B272 Seal, Posipack, 2.25, ZAP
16B273 Seal, Posipack, 2.38, ZAP
16B274 Seal, Posipack, 2.50, ZAP
16B275 Seal, Posipack, 2.63, ZAP
16B276 Seal, Posipack, 2.75, ZAP
16B277 Seal, Posipack, 3.00, ZAP
16B278 Seal, Posipack, 3.13, ZAP
16B279 Seal, Posipack, 3.25, ZAP
16B280 Seal, Posipack, 3.38, ZAP
16B281 Seal, Posipack, 3.50, ZAP
16B282 Seal, Posipack, 3.63, ZAP
16B283 Seal, Posipack, 3.75, ZAP
16B284 Seal, Posipack, 4.00, ZAP
16B285 Seal, Posipack, 4.25, ZAP
16B286 Seal, Posipack, 4.50, ZAP
16B287 Seal, Posipack, 4.63, ZAP
16B288 Seal, Posipack, 4.75, ZAP
16B289 Seal, Posipack, 4.88, ZAP
16B290 Seal, Posipack, 5.00, ZAP
16B291 Seal, Posipack, 5.13, ZAP
16B292 Seal, Posipack, 5.25, ZAP
16B293 Seal, Posipack, 5.50, ZAP
16B294 Seal, Posipack, 5.75, ZAP
16B295 Seal, Posipack, 6.00, ZAP
16B296 Seal, Posipack, 6.13, ZAP
16B297 Seal, Posipack, 6.25, ZAP
16B298 Seal, Posipack, 6.38, ZAP
16B299 Seal, Posipack, 6.50, ZAP
16B300 Seal, Posipack, 6.63, ZAP
16B301 Seal, Posipack, 6.75, ZAP
16B302 Seal, Posipack, 7.00, ZAP
16B303 Seal, Posipack, 7.25, ZAP
16B304 Seal, Posipack, 7.50, ZAP
16B305 Seal, Posipack, 7.63, ZAP
16B306 Seal, Posipack, 7.75, ZAP
16B307 Seal, Posipack, 7.88, ZAP
16B450 Seal, Posipack, 8.00, ZAP
Part Description
Part Description
E4000025-50 Needle, Luer Lock, Sampler Package
(10 each 14 ga x 1/2 in., 16 ga x
1/2 in., 18 ga x 1/2 in., 20 ga x 1/2 in.,
22 ga x 1/2 in.)
E4000001-50 Needle, Luer Lock, 14 Gauge x 1/2 in.,
50 Pack
E4000004-50 Needle, Luer Lock, 15 Gauge x 1/2 in.,
50 Pack
E4000005-50 Needle, Luer Lock, 16 Gauge x 1 in.,
50 Pack
E4000006-50 Needle, Luer Lock, 18 Gauge x 1 in.,
50 Pack
E4000011-50 Needle, Luer Lock, 22 Gauge x 1/2 in.,
50 Pack
E4000014-50 Needle, Luer Lock, 14 Gauge x 1 in.,
50 Pack
E4000024-50 Needle, Luer Lock, 23 Gauge x 1/2 in.,
50 Pack
E4000088-50 Needle, Luer Lock, 16 Gauge x 1/2 in.,
50 Pack
Part Description

Grounding
12 313876L
Grounding
This product must be grounded. In the event of an elec-
trical short circuit, grounding reduces the risk of electric
shock by providing an escape wire for the electric cur-
rent.
Metering valve: attach ground wire from grounding lug
to true earth ground. See Component Identification
starting on page 13.
Fluid hoses: use only electrically conductive hoses.
Feed system components: attach ground wire from
grounding lug to true earth ground. See feed system
manual for grounding points. See Related Manuals on
page 3.
Fluid supply container: follow local code.
Solvent pails used when flushing: follow local code.
Use only conductive metal pails, placed on a grounded
surface. Do not place the pail on a nonconductive sur-
face, such as paper or cardboard, which interrupts
grounding continuity.
Overview
This plural component meter, mix, and dispense device
accurately meters liquid and semi-paste materials.
The machine is ideal for a two-component application
requiring very small and precisely mixed shots.
The ratio of the pneumatic cylinder area to pump shaft
area provides the adjustable pressure intensification
needed to move the separate liquids through the mixer
with a flow rate suitable for production requirements.
The complete system is enclosed. Mixing of the two
materials takes place only in the mixer at the final stage
of metering valve operation. See Sequence of Opera-
tion on page 24.

Component Identification
313876L 13
Component Identification
Typical System Configurations
FIG. 1
Liquid Control Corp.
NORTH CANTON, OH 44720 USA
8400 PORT JACKSON AVE. N.W.
NUMBER
SERIAL
NUMBER
MODEL
10 56 9078234
LOCK
PUSH TO
PULL TO
RELEASE
WARNING
removing air pressure and
waring saftey glasses.
Do Not service without
1
A Side Feed
Base Unit
B Side Feed
Controls
CONTROL POWER
LiquidControl Corp.
NORTHCANTON, OH 44720 USA
8400PORT JACKSON AVE. N.W.
NUMBER
SERIAL
NUMBER
MODEL
A Side Feed
Base Unit
B Side Feed
Controls

Component Identification
14 313876L
Typical Feed System Components
FIG. 2
DO NOT SERVICE WITHOUT
REMOVING AIR PRESSURE AND
WEARING SAFETY GLASSES.
WARNING
F
200
psi
0
20 oz Cartridge Feed
with Mounting Post
5 Gallon Pail Cover
with Diaphragm Pump
1 Gallon Ram
and Pump
5 Gallon Pail Cover
with Diaphragm
Pump and Agitator
5 Gallon Ram and
11:1 Transfer Pump
5 Gallon Pail Cover
with Diaphragm
Pump
5 Gallon Pail Cover
with 5:1 Transfer
Pump

Component Identification
313876L 15
Micrometer PD44 Metering Valve
FIG. 3
Key:
A A Material Inlet (1/4 NPT)
B B Material Inlet (1/4 NPT)
C Grounding Lug
D Spool Assemblies
E Metering Rods
F Oil Cup Retaining Block
G Extend Air Inlet
H Retract Air Inlet
J Dispense Air Inlet
K Reload Air Inlet
L Extend Air Flow Adjustment
Knob
M Retract Air Flow Adjustment
Knob
N Retract Proximity Switch
P Extend Proximity Switch
R Spool Valve Proximity Switch
S Shot Size Locking Ring
T Shot Size Adjuster
T
S
P
C
R
G
H
E
N
R
A B
Side View Front View
KJ
F
DD
M
L

Component Identification
16 313876L
LRT PD44 Metering Valve
FIG. 4
B
A
Side View Front View
Key:
A A Material Inlet (1/4 NPT)
B B Material Inlet (1/4 NPT)
C Grounding Lug
D Spool Assemblies
E Metering Rods
F Oil Cup Retaining Block
G Extend Air Inlet
H Retract Air Inlet
J Dispense Air Inlet
K Reload Air Inlet
L Extend Air Flow Adjustment
Knob
M Retract Air Flow Adjustment
Knob
R Spool Valve Proximity Switch
U Transducer Connection
J
K
R
DD
C
R
E
F
H
M
L
G
U

Component Identification
313876L 17
Motor Driven PD44 Metering Valve
FIG. 5
Side View Front View
Key:
A A Material Inlet (1/4 NPT)
B B Material Inlet (1/4 NPT)
C Grounding Lug
D Spool Assemblies
E Metering Rods
F Oil Cup Retaining Block
J Dispense Air Inlet
K Reload Air Inlet
L Extend Air Flow Adjustment
Knob
M Retract Air Flow Adjustment
Knob
N Over-travel Proximity Switch
P Home Proximity Switch
R Spool Valve Proximity Switch
V Optional Motor (provided with
configured controls)
W Over-travel Proximity Switch
X Main Air Inlet (on far side of
valve as shown)
R
E
J
F
C
R
K
DD
B
A
V
W
N
WP
X

Setup
18 313876L
Setup
NOTE: See Typical Installation diagram.
2.
1. Perform Setup procedure for feed system compo-
nents. See feed system manuals. See Related
Manuals on page 3.
2. Place an in-line air pressure regulator, air-water
separator/filter, and shut-off/bleed valve between
the air supply and the control solenoids.
3. Connect each 1/4 in. outside diameter supplied air
line to the corresponding control solenoid. See
Component Identification starting on page 13.
4. On the Motor Driven PD44, if a non-Graco motor is
used, install the motor onto the metering valve. See
Motor Mounting Diagram, page 20.
5. On the Motor Driven PD44, connect the required
electrical power to the metering valve. See Motor
Specifications, page 40.
6. Connect chemical lines from feed system to meter-
ing valve material inlets (1/4 NPT). See Compo-
nent Identification starting on page 13.
Typical Installation
FIG. 6
Metering Valve
A Side Pump
A Side Material Tank (optional)
A Side Fluid Shut-Off Valve
Air Supply Air Shut-off and Bleed Valve
B Side Pump B Side Fluid Shut-Off Valve
B Side Material Tank
Air Pressure Regulator
User Supplied
Air-Water Separator/Filter
Control Solenoids

Setup
313876L 19
Tank Level Sensor Wiring
Schematic
Valve Mounting Diagram
As desired, use the following diagram to mount the
metering valve.
TYPICAL LEVEL SENSOR WIRING
BLU
BLK
7
NUMBER
PIN USAGE
4
5
6
2
3
PIN
1
TANK LEVEL
12
345
67
BROWN
BLACK
BLUE
BROWN
BLACK
BLUE
BLUE
24 VDC+ BRN
COM
SIGNAL
HIGH
LOW
LOW
LOW
LOW
HIGH
HIGH
USAGE
JUMPER PIN 6 AND 7
FIG. 7
1.63
3.75
3.25
0.563
4X Ø 0.188
DOWEL PINS
0.862
0.190
1.75
L
1.50
0.75 C
1.06
0.38
4X 10-24 X 0.5 DP
Bottom View
Front of Metering Valve
(Spool Assembly Not Shown)

Setup
20 313876L
Motor Mounting Diagram
If using a non-Graco motor with the Motor Driven PD44,
use the following diagram to install the non-Graco motor
onto the Motor Driven PD44 metering valve. See Motor
Specifications, page 40.
Custom Drive Mounting Diagram
If using a non-Graco lead screw or housing, use the fol-
lowing diagram to ensure that the guide rods will align
properly with the custom housing.
FIG. 8
2.22
2.22 2.039
0.182 2.039
0.182
Ø 0.251
STANDARD
4X 10-32
Top View of Drive Assembly
FIG. 9
Bottom View of Lead Screw Housing
2X #30 (0.129Ø)
FLAT BTTM DRILL X .25 DP
1.75
.44
1.31
.19
1.75
1.56