Graco Dispensit 1053-10C Troubleshooting guide

Operation - Maintenance
Dispensit
1053-10C 3A0874F
EN
Patented meter and dispense system for precise one-component micro-dispensing.
2000 psi (14 MPa, 138 bar) Maximum Outlet Fluid Working Pressure
Metal Sleeves: 1200 psi (8 MPa, 83 bar) Maximum Material Inlet Pressure
Plastic Sleeves: 400 psi (2.8 MPa, 28 bar) Maximum Material Inlet Pressure
100 psi (0.7 MPa, 7 bar) Maximum Air Working Pressure
110°F (43°C) Maximum Ambient Temperature
150°F (65°C) Maximum Operating Temperature
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
Valve shown is with controls/motor integrated

2 3A0874F
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Important Isocyanate (ISO) Information . . . . . . . . 6
Isocyanate Conditions . . . . . . . . . . . . . . . . . . . . . 6
Material Self-ignition . . . . . . . . . . . . . . . . . . . . . . 6
Keep Components A and B Separate . . . . . . . . . 6
Moisture Sensitivity of Isocyanates . . . . . . . . . . . 6
Changing Materials . . . . . . . . . . . . . . . . . . . . . . . 7
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Cycle Detection Spool Sensors . . . . . . . . . . . . . . . 8
Component Identification . . . . . . . . . . . . . . . . . . . . 9
Typical System Configurations . . . . . . . . . . . . . . 9
Typical Feed System Components . . . . . . . . . . 10
Typical Feed System Components (continued) 11
Metering Valve . . . . . . . . . . . . . . . . . . . . . . . . . 12
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Typical Installation . . . . . . . . . . . . . . . . . . . . . . 13
Valve Mounting Diagram . . . . . . . . . . . . . . . . . . 14
Motor Mounting Diagram . . . . . . . . . . . . . . . . . 15
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Sequence of Operation . . . . . . . . . . . . . . . . . . . 17
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . 18
Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
1053C Valve, 2” Stroke . . . . . . . . . . . . . . . . . . . 20
1053C Valve Shared Components, 2” Stroke . . 22
1053C Valve, 2” Stroke . . . . . . . . . . . . . . . . . . . 23
Rebuild . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Motor and Motor Coupling Assembly . . . . . . . . 26
Remove motor and motor coupler, tighten Screws
(4) and reassemble securing motor to Motor
Mounting Plate using Socket Head Cap Screws
(14). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Motor and Motor Coupling Illustration . . . . . . . . . 27
Electrical Requirements . . . . . . . . . . . . . . . . . . . . 28
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Motor Specifications . . . . . . . . . . . . . . . . . . . . . 29
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 30
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 30
Related Manuals
Component manuals in U.S. English.
1053-10C Valve Models
Part Description
3A0261 1053/1093 Control Box
1053-10C Valves
Part No. Configuration Description
A2A10300 1053-10C-4RS1-062-V-NEMA23 2 INCH 2 inch stroke, .062 diameter rod, nitrided tool steel wetted
components, NEMA 23 motor ready
A2A10302 1053-10C-4RS1-188-V-NEMA23 2 INCH 2 inch stroke, .188 diameter rod, nitrided tool steel wetted
components, NEMA 23 motor ready
A2A10303 1053-10C-4RS1-250-V-NEMA23 2 INCH 2 inch stroke, .250 diameter rod, nitrided tool steel wetted
components, NEMA 23 motor ready
A2A10304 1053-10C-4RS1-375-V-NEMA23 2 INCH 2 inch stroke, .375 diameter rod, nitrided tool steel wetted
components, NEMA 23 motor ready
A2A10305 1053-10C-4TT1-062-V-NEMA23 2 INCH 2 inch stroke, .062 diameter rod, stainless steel wetted
components, NEMA 23 motor ready
A2A10306 1053-10C-4TT1-125-V-NEMA23 2 INCH 2 inch stroke, .125 diameter rod, stainless steel wetted
components, NEMA 23 motor ready
A2A10307 1053-10C-4TT1-188-V-NEMA23 2 INCH 2 inch stroke, .188 diameter rod, stainless steel wetted
components, NEMA 23 motor ready

3A0874F 3
A2A10308 1053-10C-4TT1-250-V-NEMA23 2 INCH 2 inch stroke, .250 diameter rod, stainless steel wetted
components, NEMA 23 motor ready
A2A10309 1053-10C-4TT1-375-V-NEMA23 2 INCH 2 inch stroke, .375 diameter rod, stainless steel wetted
components, NEMA 23 motor ready
1053-10C Valves
Part No. Configuration Description

Warnings
4 3A0874F
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
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.
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 Safety Data Sheets (SDSs) for handling instructions and to know the specific hazards of the
fluids you are using, including the effects of long-term exposure.
• When spraying, servicing equipment, or when in the work area, always keep work area
well-ventilated and always wear appropriate personal protective equipment. See Personal
Protective Equipment warnings in this manual.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
PERSONAL PROTECTIVE EQUIPMENT
Always wear appropriate personal protective equipment and cover all skin when spraying, servicing
equipment, or when in the work area. Protective equipment helps prevent serious injury, including
long-term exposure; inhalation of toxic fumes, mists or vapors; allergic reaction; burns; eye injury and
hearing loss. This protective equipment includes but is not limited to:
• A properly fitting respirator, which may include a supplied-air respirator, chemically impermeable
gloves, protective clothing and foot coverings as recommended by the fluid manufacturer and local
regulatory authority.
• Protective eyewear and hearing protection.

Warnings
3A0874F 5
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. Paint or solvent
flowing through the equipment can cause static sparking. 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 sparking).
• Ground all equipment in the work area. See Grounding instructions.
• Never spray or flush solvent at high pressure.
• 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.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail liners unless they
are anti-static or conductive.
•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.
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 Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Specifica-
tions in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete infor-
mation about your material, request Safety Data Sheets (SDSs) 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.
MOVING PARTS HAZARD
Moving parts can pinch, cut 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 and disconnect all power sources.
BURN HAZARD
Equipment surfaces and fluid that is heated can become very hot during operation. To avoid severe
burns:
• Do not touch hot fluid or equipment.
WARNING

Important Isocyanate (ISO) Information
6 3A0874F
Important Isocyanate (ISO) Information
Isocyanate Conditions
Material Self-ignition
Keep Components A and B
Separate
Moisture Sensitivity of
Isocyanates
Exposure to moisture (such as humidity) will cause ISO
to partially cure, forming small, hard, abrasive crystal
that become suspended in the fluid. Eventually a film will
form on the surface and the ISO will begin to gel,
increasing in viscosity.
NOTE: The amount of film formation and rate of crystal-
lization varies depending on the blend of ISO, the
humidity, and the temperature.
Spraying or dispensing fluids that contain isocyanates
creates potentially harmful mists, vapors, and
atomized particulates.
• Read and understand the fluid manufacturer’s
warnings and Safety Data Sheet (SDS) to know
specific hazards and precautions related to isocy-
anates.
• Use of isocyanates involves potentially hazardous
procedures. Do not spray with this equipment
unless you are trained, qualified, and have read
and understood the information in this manual and
in the fluid manufacturer’s application instructions
and SDS.
• Use of incorrectly maintained or mis-adjusted
equipment may result in improperly cured material.
Equipment must be carefully maintained and
adjusted according to instructions in the manual.
• To prevent inhalation of isocyanate mists, vapors,
and atomized particulates, everyone in the work
area must wear appropriate respiratory protection.
Always wear a properly fitting respirator, which
may include a supplied-air respirator. Ventilate the
work area according to instructions in the fluid
manufacturer’s SDS.
• Avoid all skin contact with isocyanates. Everyone
in the work area must wear chemically imperme-
able gloves, protective clothing and foot coverings
as recommended by the fluid manufacturer and
local regulatory authority. Follow all fluid manufac-
turer recommendations, including those regarding
handling of contaminated clothing. After spraying,
wash hands and face before eating or drinking.
Some materials may become self-igniting if applied
too thick. Read material manufacturer’s warnings and
material Safety Data Sheet (SDS).
Cross-contamination can result in cured material in
fluid lines which could cause serious injury or damage
equipment. To prevent cross-contamination:
• Never interchange component A and component
B wetted parts.
• Never use solvent on one side if it has been con-
taminated from the other side.
NOTICE
Partially cured ISO will reduce performance and the life
of all wetted parts.
• 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 pump wet cup or reservoir (if
installed) filled with appropriate lubricant. The
lubricant creates a barrier between the ISO and
the atmosphere.
• Use only moisture-proof hoses compatible with
ISO.
• Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
• Always lubricate threaded parts with an
appropriate lubricant when reassembling.

Important Isocyanate (ISO) Information
3A0874F 7
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
NOTICE
Changing the material types used in your equipment
requires special attention to avoid equipment damage
and downtime.
• When changing materials, flush the equipment
multiple times to ensure it is thoroughly clean.
• Always clean the fluid inlet strainers after flushing.
• Check with your material manufacturer for
chemical compatibility.
• When changing between epoxies and urethanes
or polyureas, disassemble and clean all fluid
components and change hoses. Epoxies often
have amines on the B (hardener) side. Polyureas
often have amines on the B (resin) side.

Grounding
8 3A0874F
Grounding
Metering valve: attach ground wire from grounding lug
to true earth ground. See Component Identification
starting on page 9.
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.
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 single-component meter and dispense device
accurately meters liquid and semi-paste materials.
The machine is designed for application that require
very small and precisely dispensed beads and/or dots of
material at a wide range of material inlet pressures.
The ratio of the flow rate/stroke length to pump shaft
area provides the adjustable pressure intensification
needed to move the separate liquids through the needle
with a flow rate suitable for production requirements.
The complete system is enclosed. See Sequence of
Operation on page 17.
Cycle Detection Spool
Sensors
The spool sensors are magnetic reed switches and
must be connected to an electrical control. An LED on
the switch illuminates to indicate the shifting of the
spool.
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Grounding provides an escape wire
for the electric current.

Component Identification
3A0874F 9
Component Identification
Typical System Configurations
FIG. 1
CONTROL POWER
9#40+0) #&8'46'0%+# /+5''0)#4&'
Valve Controls
System shown with optional controls

Component Identification
10 3A0874F
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
3A0874F 11
Typical Feed System Components (continued)
FIG. 3
R
0
12
8
4
psi
30
22
19
15
26
R
0
12
8
4
psi
30
22
19
15
26
5 Gallon Tank with Diaphragm Pump and Stand 5 Gallon Tank with 5:1 Pump and Stand
10 Gallon Tank with Diaphragm Pump, Agitator,
Vacuum, and Stand
10 Gallon Tank with 5:1 Pump, Agitator, Vacuum,
and Stand

Component Identification
12 3A0874F
Metering Valve
FIG. 4
Key:
A Material Inlet
B Grounding Lug
C Spool
D Metering Rod
E Oil Cup Retaining
Block
F Dispense Air Inlet
G Reload Air Inlet
H Lower Sensor
I Upper Sensor
J Drive Nut
K Drive Screw
L Drive Coupling
M Sensor Amplifiers
N Oil Cup
O Wet Cups
P Drive Locking Screw
Q Spool Sensor Close
R Spool Sensor Open
S Needle with Adapter
SAC
F
P
R
E
D
H
I
N
K
J
L
M
Q
O
G
P

Setup
3A0874F 13
Setup
NOTE: See Typical Installation diagram.
2.
1. Perform Setup procedure for feed system compo-
nents. See feed system manual(s).
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 9.
4. Connect chemical lines from feed system to meter-
ing valve material inlets. See Component Identifi-
cation starting on page 9.
Typical Installation
FIG. 5
Metering Valve
Pump
Material Tank (optional)
Fluid Shut-Off Valve
Air Supply Air Shut-off and Bleed Valve
Air Pressure Regulator
User Supplied
Air-Water Separator/Filter
Control Solenoids

Setup
14 3A0874F
Valve Mounting Diagram
As desired, use the following diagram to mount the
metering valve.
NOTE: Valve shown is for controls/motor integrated. For
valve without controls/motor integrated, mounting pat-
tern is the same just less LS-Home, solenoid open/close
and all the wires terminated at a plug.
FIG. 6
WLD
0.874
1.17
1.70
6.27
1.25
11.28
2.87
2.00
0.625
Ø.201 THRU
2 PLACES
Ø.201 THRU
4 PLACES
MATERIAL OUTLET
MATERIAL INLET

Setup
3A0874F 15
Motor Mounting Diagram
If using a non-Graco motor with the dispense valve, use
the following diagram to install the non-Graco motor
onto the valve. See Motor Specifications on page 29.
2.22
2.22 2.039
0.182 2.039
0.182
Ø 0.251
STANDARD
4X 10-32 thru
1.5150 x .062 Dp

Startup
16 3A0874F
Startup
1. Lubricate the metering rod port in the oil cup retain-
ing block and fill the spool valve ports with compati-
ble lubricant such as mesamoll or silicone oil.
2. Pressurize the feed systems connected to the
metering valve to prime the system. See Technical
Data on page 29 for maximum inlet feed pressure.
3. Dispense several full stroke shots until material is
air-free and has good shut-off at the nose.
NOTE: Very viscous, compressible materials may con-
tinue to droll after system is primed. Reduce flow rate as
required to produce air-free dispense.
NOTE: Very thin materials may require tilting the valve
greater than 45 degrees and dispensing shots until
material is air-free. Remove oil from cups before pro-
ceeding.
FIG. 7: Top View of Metering Valve with Top Section
Removed
Metering Rod Port (oil cup)
Spool Valve Ports (wet cups)

Operation
3A0874F 17
Operation
The operation of the 1053 metering valve is controlled
by an external source. If a Control Box was purchased,
see the Control Box manual for operation instructions.
See Related Manuals on page 2.
Sequence of Operation
Step 1: Reload
• Spool shifts to the right
• Material feed inlet is opened
• Material is transferred into the metering chambers
by a pressurized feed system
• Outlet port is blocked
• Metering rod is retracted to a precise position deter-
mining the volume of each material
Step 2: Shift
• The balanced spool shifts to the dispense position
• Material path to the needle is opened
• Material feed inlet port is blocked
• Metering rod remains in the retracted position
Step 3: Dispense
• Metering rod extends
• Material is dispensed from the metering chamber
into the needle
Upon completion of the dispense stroke, the metering
rod and spool shifts back to the reload position.

Pressure Relief Procedure
18 3A0874F
Pressure Relief
Procedure
1. Retract the metering rods. See the Control Box
manual. See Related Manuals on page 2.
2. Close the fluid shut-off valve.
3. Remove needle.
4. Dispense 5 shots. Shots should be at least 75% of
the full stroke.
5. Extend the metering rod into the tubes. If Graco
controls are provided with the system, see the Con-
trols manual. See Related Manuals on page 2.
6. Close the incoming air shut-off/bleed valve that sup-
plies air to the metering valve.
7. Close the incoming air shut-off/bleed valve that sup-
plies the feed system. Refer to feed system manual
for pressure relief procedure.
Shutdown
1. Perform Pressure Relief Procedure.
2. Inspect the metering rod for material buildup. Clean
as necessary.
3. Lubricate the metering rod with compatible lubricant
such as mesamoll or silicone oil.
4. Remove needle adapter and replace with 10-32 set
screw.
Maintenance
Perform the following procedures once a shift.
NOTE: If material is leaking, see Troubleshooting on
page 19.
Material Reservoirs
Check material levels and refill as necessary. Ensure
that the material reservoirs are properly vented.
Air Dryer
Check the condition of the desiccant air dryer. Replace
as necessary.
Metering Rod Port (oil cup)
Lubricate with compatible lubricant such as mesamoll or
silicone oil. See FIG. 7 on page 16.
Spool Valve Port (wet cups)
Fill with compatible lubricant such as mesamoll or sili-
cone oil. See FIG. 7 on page 16.

Troubleshooting
3A0874F 19
Troubleshooting
Schematics
For standard machines, the schematics will be
included in the Controls Parts manual. See Related
Manuals on page 2.
For custom machines, the schematics will be included
in the assembly drawings manual.
Perform Pressure Relief Procedure before perform-
ing any troubleshooting procedure.
Problem Cause Solution
Metering valve stalling and no mate-
rial being dispensed despite ade-
quate input pressure
Blocked needle Check needle for cured material,
replace as required
Metering valve not discharging nor-
mal or full volume
Low material level in reservoirs Fill material reservoirs and prime the
machine
Air in material tank Fill reservoir and prime machine
Material leaks past spool valve Spool valve worn or damaged Replace the spool valve
The 1053 valve will not cycle Cycle detection sensors not working Check connections or replace as
needed
The 1053 valve cycles slowly Oil cup/wet cups are not supplied
with lubrication
Add lubrication. Note: Lubrication
must be compatible with all seals.
The 1053 valve drools or leaks Air is trapped in the valve Prime the valve until air/free material
is visible
Seals are worn Replace seals
Spool will not actuate Low air pressure Increase air pressure to approxi-
mately 20-30 psi
Cured material on spool Check spool for cured material,
replace as required
Seals are worn Replace seals

Parts
20 3A0874F
Parts
1053C Valve, 2” Stroke
44
34
32
31
30
29
28
26
27
25
22 11
63,64
78912,13 14
3
10
15
1
16
4
17
18
19
20
47