A10A Automatic Electric Spray Gun

A10A Automatic Electric Spray Gun
A10A Automatic Electric Spray Gun
Customer Product Manual
Part 107976E
Issued 9/03
For parts and technical support, call the Industrial Coating
Systems Customer Support Center at (800) 433-9319 or
contact your local Nordson representative.
This document is subject to change without notice.
Check http://emanuals.nordson.com for the latest version.
NORDSON CORPORATION  AMHERST, OHIO  USA
tents
Table of Contents
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Qualified Personnel . . . . . . . . . . . . . . . . . . . . . . . . .
Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Regulations and Approvals . . . . . . . . . . . . . . . . . .
Personal Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High-Pressure Fluids . . . . . . . . . . . . . . . . . . . . .
Fire Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Halogenated Hydrocarbon Solvent Hazards .
Action in the Event of a Malfunction . . . . . . . . . . .
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid Connection . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circulating Systems . . . . . . . . . . . . . . . . . . . . . .
Non-Circulating Systems . . . . . . . . . . . . . . . . . .
Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . .
EECS Special Conditions for Safe Use . . . . . .
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
1
1
1
1
2
2
3
3
3
3
4
4
5
5
5
5
5
5
Contact Us
Nordson Corporation welcomes requests for information, comments, and
inquiries about its products. General information about Nordson can be
found on the Internet using the following address:
http://www.nordson.com.
Address all correspondence to:
Nordson Corporation
Attn: Customer Service
555 Jackson Street
Amherst, OH 44001
Part 107976E
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the Compression Springs . . . . . . . . . . .
Checking for Needle and Seat Wear . . . . . . . . . . .
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Illustrated Parts List . . . . . . . . . . . . . . .
Spray Gun Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Spare Part . . . . . . . . . . . . . . . . . . .
Optional Bar-Mounting Parts . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
6
6
6
7
7
7
8
8
9
9
10
Notice
This is a Nordson Corporation publication which is protected by copyright.
Original copyright date 1979. No part of this document may be
photocopied, reproduced, or translated to another language without the
prior written consent of Nordson Corporation. The information contained
in this publication is subject to change without notice.
Trademarks
Nordson and the Nordson logo are registered trademarks of Nordson
Corporation.
E 2003 Nordson Corporation
Model A10A Automatic Electric Spray Gun
1
Model A10A Automatic Electric Spray Gun
Safety
Regulations and Approvals
Read and follow these safety instructions. Taskand equipment-specific warnings, cautions, and
instructions are included in equipment
documentation where appropriate.
Make sure all equipment is rated and approved for
the environment in which it is used. Any approvals
obtained for Nordson equipment will be voided if
instructions for installation, operation, and service
are not followed.
Make sure all equipment documentation, including
these instructions, is accessible to persons
operating or servicing equipment.
Personal Safety
To prevent injury follow these instructions.
Qualified Personnel
Equipment owners are responsible for making sure
that Nordson equipment is installed, operated, and
serviced by qualified personnel. Qualified
personnel are those employees or contractors who
are trained to safely perform their assigned tasks.
They are familiar with all relevant safety rules and
regulations and are physically capable of
performing their assigned tasks.
Intended Use
Use of Nordson equipment in ways other than
those described in the documentation supplied with
the equipment may result in injury to persons or
damage to property.
Some examples of unintended use of equipment
include
S using incompatible materials
S making unauthorized modifications
S removing or bypassing safety guards or
interlocks
S using incompatible or damaged parts
S using unapproved auxiliary equipment
S operating equipment in excess of maximum
ratings
E 2003 Nordson Corporation
S Do not operate or service equipment unless you
are qualified.
S Do not operate equipment unless safety
guards, doors, or covers are intact and
automatic interlocks are operating properly. Do
not bypass or disarm any safety devices.
S Keep clear of moving equipment. Before
adjusting or servicing moving equipment, shut
off the power supply and wait until the
equipment comes to a complete stop. Lock out
power and secure the equipment to prevent
unexpected movement.
S Relieve (bleed off) hydraulic and pneumatic
pressure before adjusting or servicing
pressurized systems or components.
Disconnect, lock out, and tag switches before
servicing electrical equipment.
S While operating manual spray guns, make sure
you are grounded. Wear electrically conductive
gloves or a grounding strap connected to the
gun handle or other true earth ground. Do not
wear or carry metallic objects such as jewelry or
tools.
S If you receive even a slight electrical shock,
shut down all electrical or electrostatic
equipment immediately. Do not restart the
equipment until the problem has been identified
and corrected.
Part 107976E
2
Model A10A Automatic Electric Spray Gun
Personal Safety
(contd)
S Obtain and read Material Safety Data Sheets
(MSDS) for all materials used. Follow the
manufacturer’s instructions for safe handling
and use of materials, and use recommended
personal protection devices.
S Make sure the spray area is adequately
ventilated.
S To prevent injury, be aware of less-obvious
dangers in the workplace that often cannot be
completely eliminated, such as hot surfaces,
sharp edges, energized electrical circuits, and
moving parts that cannot be enclosed or
otherwise guarded for practical reasons.
High-Pressure Fluids
High-pressure fluids, unless they are safely
contained, are extremely hazardous. Always
relieve fluid pressure before adjusting or servicing
high pressure equipment. A jet of high-pressure
fluid can cut like a knife and cause serious bodily
injury, amputation, or death. Fluids penetrating the
skin can also cause toxic poisoning.
If you suffer a fluid injection injury, seek medical
care immediately. If possible, provide a copy of the
MSDS for the injected fluid to the health care
provider.
The National Spray Equipment Manufacturers
Association has created a wallet card that you
should carry when you are operating high-pressure
spray equipment. These cards are supplied with
your equipment. The following is the text of this
card:
MEDICAL ALERT—AIRLESS SPRAY WOUNDS:
NOTE TO PHYSICIAN
Injection in the skin is a serious traumatic injury. It
is important to treat the injury surgically as soon as
possible. Do not delay treatment to research
toxicity. Toxicity is a concern with some exotic
coatings injected directly into the bloodstream.
Consultation with a plastic surgeon or a
reconstructive hand surgeon may be advisable.
The seriousness of the wound depends on where
the injury is on the body, whether the substance hit
something on its way in and deflected causing
more damage, and many other variables including
skin microflora residing in the paint or gun which
are blasted into the wound. If the injected paint
contains acrylic latex and titanium dioxide that
damage the tissue’s resistance to infection,
bacterial growth will flourish. The treatment that
doctors recommend for an injection injury to the
hand includes immediate decompression of the
closed vascular compartments of the hand to
release the underlying tissue distended by the
injected paint, judicious wound debridement, and
immediate antibiotic treatment.
Fire Safety
To avoid a fire or explosion, follow these
instructions.
S Ground all conductive equipment. Use only
grounded air and fluid hoses. Check equipment
and workpiece grounding devices regularly.
Resistance to ground must not exceed one
megohm.
S Shut down all equipment immediately if you
WARNING: Any injury caused by high
pressure liquid can be serious. If you are
injured or even suspect an injury:
S Go to an emergency room immediately.
S Tell the doctor that you suspect an injection
injury.
S Show him this card
S Tell him what kind of material you were spraying
Part 107976E
notice static sparking or arcing. Do not restart
the equipment until the cause has been
identified and corrected.
S Do not smoke, weld, grind, or use open flames
where flammable materials are being used or
stored.
S Do not heat materials to temperatures above
those recommended by the manufacturer.
Make sure heat monitoring and limiting devices
are working properly.
E 2003 Nordson Corporation
Model A10A Automatic Electric Spray Gun
S Provide adequate ventilation to prevent
dangerous concentrations of volatile particles or
vapors. Refer to local codes or your material
MSDS for guidance.
S Do not disconnect live electrical circuits when
working with flammable materials. Shut off
power at a disconnect switch first to prevent
sparking.
S Know where emergency stop buttons, shutoff
valves, and fire extinguishers are located. If a
fire starts in a spray booth, immediately shut off
the spray system and exhaust fans.
S Shut off electrostatic power and ground the
charging system before adjusting, cleaning, or
repairing electrostatic equipment.
S Clean, maintain, test, and repair equipment
according to the instructions in your equipment
documentation.
S Use only replacement parts that are designed
for use with original equipment. Contact your
Nordson representative for parts information
and advice.
3
Action in the Event of a
Malfunction
If a system or any equipment in a system
malfunctions, shut off the system immediately and
perform the following steps:
S Disconnect and lock out system electrical
S
power. Close hydraulic and pneumatic shutoff
valves and relieve pressures.
Identify the reason for the malfunction and
correct it before restarting the system.
Disposal
Dispose of equipment and materials used in
operation and servicing according to local codes.
Description
See Figure 1. The model A10A automatic electric
spray gun is designed for use with nonpigmented
solventborne or waterborne materials. Because of
its high-cycle capacity, the A10A gun is especially
suited for can lining operations.
Halogenated Hydrocarbon Solvent
Hazards
Do not use halogenated hydrocarbon solvents in a
pressurized system that contains aluminum
components. Under pressure, these solvents can
react with aluminum and explode, causing injury,
death, or property damage. Halogenated
hydrocarbon solvents contain one or more of the
following elements:
Element
Fluorine
Chlorine
Bromine
Iodine
Symbol
F
Cl
Br
I
Prefix
“Fluoro-”
“Chloro-”
“Bromo-”
“Iodo-”
Check your material MSDS or contact your material
supplier for more information. If you must use
halogenated hydrocarbon solvents, contact your
Nordson representative for information about
compatible Nordson components.
1200333A
Figure 1
E 2003 Nordson Corporation
A10A Automatic Electric Spray Guns
Part 107976E
4
Model A10A Automatic Electric Spray Gun
Installation
26.7-27.1 mm
(1.051-1.067 in.)
WARNING: Allow only qualified personnel
to perform the following tasks. Follow the
safety instructions in this document and all
other related documentation.
WARNING: Pressurized system. Before
installing the A10A spray gun, make sure
to relieve all pressure and to remove
electrical power from the system.
5.16-mm
(0.203-in.) dia.
Mounting
Mounting Plate: See Figure 2 for mounting hole
dimensions.
Bar Mounting: See Figure 3. Mount the spray
gun to a 12.7-mm (1/2-in.) round bar by using the
optional mounting block and screw (3). Refer to
Optional Bar-Mounting Parts for the part numbers.
1200334A
Figure 2
A10A Mounting Dimensions
1
2
64 mm
(2.50 in.)
19 mm
(0.75 in.)
3
4
5
1200335A
Figure 3
Key Mounting and Connection Points of the A10A Gun
1. 1/2-20 x 1/4-in. NPTF elbows
2. Mounting holes
Part 107976E
3. Optional mounting block and screw
installed
4. Rotation range (360_) for the
1/ -in. NPT electrical connection
2
5. 1/2-in. NPT electrical
connection
E 2003 Nordson Corporation
Model A10A Automatic Electric Spray Gun
Fluid Connection
Testing
See Figure 3.
Trigger the spray gun two or three times before
pressurizing the system to ensure that the proper
electrical connection has been made and the
needle is properly seated.
Circulating Systems
The inlet/outlet fluid hoses may be connected to
either of the two male elbows (1). Hold the male
elbow(s) securely while tightening the hoses to
prevent damage to the gun body.
Non-Circulating Systems
Replace either of the male elbows with a
1/ -in. NPTF plug. Use a corrosion-resistant plug if
4
waterborne materials will be used in the spray gun.
Electrical Connection
The A10A gun may be connected to any 24 Vdc
source that supplies a minimum of 1.5 amps.
EECS Special Conditions for Safe Use
5
Operation
WARNING: The spray gun is designed for
high-cycle applications only. It is not
designed to be triggered on for long
periods of time. Damage to the solenoid
coil may occur. When flushing out the
system, the gun should not be left on for
more than 5 seconds.
Operation of the A10A spray gun depends on its
control unit. Refer to the control unit manual for
operation procedures.
In service, the supply to the solenoid coil must be
protected by a 2A (maximum) fuse to IEC 127 :
1974 : Standard Sheet 1 or any fuse having the
same rating and similar characteristics to the
above-mentioned standards.
See Figure 3. The solenoid housing on the A10A
contains a 1/2-in. NPT female fitting (5) for
connection to electrical conduit. Electrical leads
from the solenoid are short, so a junction box
suitable for conditions of use should be connected
close to the spray gun. For easy electrical
installation, the solenoid housing may be rotated
360_ by loosening the jam nut and housing nut.
E 2003 Nordson Corporation
Part 107976E
6
Model A10A Automatic Electric Spray Gun
Troubleshooting
WARNING: Allow only qualified personnel
to perform the following tasks. Follow the
safety instructions in this document and all
other related documentation.
Problem
This section contains troubleshooting procedures.
These procedures cover only the most common
problems that you may encounter. If you cannot
solve the problem with the information given here,
contact your local Nordson representative for help.
Possible Cause
Corrective Action
1.
Leaking around
nozzle or nozzle
retaining nut
Dirty or damaged metal sealing
surfaces
Remove, clean, or replace the
nozzle, retaining nut, or needle and
seat kit.
2.
Spitting
Dirty or worn needle and seat
Clean or replace the needle and seat.
3.
Spray gun will not
trigger
Poor electrical connection
Check all of the electrical
connections.
Disconnect the solenoid wires. Make
sure that the solenoid coil has a
resistance of approximately 18 ohms.
Replace with a coil kit, if necessary.
Replace the O-rings.
Bad solenoid coil
4.
Leaking between
solenoid housing and
gun body
Bad O-rings
Checking the Compression
Springs
Checking for Needle and Seat
Wear
See Figure 5. The large and small compression
springs (5, 6) must be free from each other to
function properly. Check to make sure that they
are not tangled and that the small spring rests
completely inside of the large spring.
See Figure 4. The distance between the ridge on
the needle (2) and the surface of the seat (1)
should be 2.79-3.18 mm (0.110-0.125 in.).
The free length (non-compressed length) of the
large diameter spring should be approximately
10.54 mm (0.415 in.). The free length of the small
diameter spring should be approximately 25.4 mm
(1 in.).
S
S If the distance is shorter than 2.79 mm
(0.110 in.), the seat is worn. Replace the
needle and seat assembly.
If the distance is longer than 3.18 mm
(0.125 in.), the needle is not properly or fully
seated. Push on the needle until it is fully
resting in the seat and the distance between the
seat and the ridge on the needle is within the
acceptable range.
1
2
2.79-3.18 mm
(0.110-0.125 in.)
1200336A
Figure 4
Needle Position When Properly Seated
1. Seat
2. Needle
Part 107976E
E 2003 Nordson Corporation
Model A10A Automatic Electric Spray Gun
7
1. See Figure 5. Unscrew the jam nut (15),
housing nut (14), and solenoid cap to remove
the solenoid coil from its housing (13).
Repair
WARNING: Allow only qualified personnel
to perform the following tasks. Follow the
safety instructions in this document and all
other related documentation.
CAUTION: After any repair or
disassembly, trigger the gun a few times
before repressurizing the system to ensure
that the needle is seated correctly.
NOTE: To install a needle and seat, skip steps 1
and 2 and perform steps 3 and 4 only.
2. Unscrew the fillister-head screw (11) and
sleeve (12) to remove the two springs (5 and 6)
and the bottom O-ring (7) from the rear of the
gun body.
3. Remove the four screws (2) to remove the
needle and seat (4 or 8), the top O-ring (7), and
the armature (3).
NOTE: To make assembly easier, hold the gun
vertically (pointing down) as you insert the springs,
armature, O-ring, and needle and seat into the gun
body.
4. Reverse steps 1 through 3 to assemble the
spray gun.
Parts
To order parts, call the Nordson Customer Service Center or your local Nordson representative. Use this
five-column parts list, and the accompanying illustration, to describe and locate parts correctly.
Using the Illustrated Parts List
Numbers in the Item column correspond to numbers that identify parts in illustrations following each parts
list. The code NS (not shown) indicates that a listed part is not illustrated. A dash (—) is used when the part
number applies to all parts in the illustration.
The number in the Part column is the Nordson Corporation part number. A series of dashes in this column
(- - - - - -) means the part cannot be ordered separately.
The Description column gives the part name, as well as its dimensions and other characteristics when
appropriate. Indentions show the relationships between assemblies, subassemblies, and parts.
S If you order the assembly, items 1 and 2 will be included.
S If you order item 1, item 2 will be included.
S If you order item 2, you will receive item 2 only.
The number in the Quantity column is the quantity required per unit, assembly, or subassembly. The code
AR (As Required) is used if the part number is a bulk item ordered in quantities or if the quantity per
assembly depends on the product version or model.
Letters in the Note column refer to notes at the end of each parts list. Notes contain important information
about usage and ordering. Special attention should be given to notes.
Item
—
1
2
Part
0000000
000000
000000
E 2003 Nordson Corporation
Description
Assembly
S Subassembly
S S Part
Quantity
1
2
1
Note
A
Part 107976E
8
Model A10A Automatic Electric Spray Gun
Spray Gun Parts
See Figure 5.
Item
—
—
1
2
Part
Description
Quantity
Note
246075
246065
123200
981160
GUN, A10A, standard
1
GUN, A10A, 2.5-in. extension
1
1
S NUT, nozzle, anti-foul, stainless steel
4
A
S SCREW, pan head, #10-32 x 0.500 in.,
zinc-plated steel
3
246072
1
S ARMATURE
4
-----1
A
S NEEDLE AND SEAT, A10A, standard
5
270905
1
A
S SPRING, compression, 0.990 x 0.157 OD x
0.022 in.
6
270863
1
A
S SPRING, compression, 0.415 x 0.247 OD x
0.015 in.
7
940190
2
A
S O-RING, hotpaint, 0.813 x 0.938 x 0.063 in.
8
-----1
A
S NEEDLE AND SEAT, A10A, 2.5-in. extension
9
972177
2
S ELBOW, male, 37, 1/2-20 x 1/4 in., stainless
steel
10
-----1
S BODY, gun
11
981022
1
S SCREW, fillister head, #6-32 x 0.375 in.,
zinc-plated steel
12
246051
1
S SLEEVE, solenoid
13
901109
1
B
S COIL, solenoid
14
246066
1
B
S NUT, housing
1
15
984171
1
B
S NUT, hex, jam, /2-20 in., zinc-plated steel
NS
981116
2
S SCREW, fillister head, #10-32 x 2.500 in.,
zinc-plated steel
NS
983120
2
S WASHER, lock, e, split, #10, nickel-plated steel
NS
246067
1
B
S CAP, solenoid
NS
152999
1
S WRENCH
NS
901905
1
S BRUSH
NS
247646
1
S CARD, medical alert, injection
NOTE A: These parts are included in the A10A needle and seat service kits. Refer to Service Kits for kit part
numbers.
B: These parts are included in the coil service kit, part 106300.
NS: Not Shown
Service Kits
Part
Description
106300
COIL service kit
106301
NEEDLE AND SEAT service kit, A10A, 2.5 in. extension
106302
NEEDLE AND SEAT service kit, A10A, standard
141196
BALL AND SEAT service kit, A10A, 2.5 in. extension
NOTE A: This kit services both standard and 2.5-in. extension guns, parts 246075 and 246065.
Note
A
B
C
B
B: This kit services 2.5-in. extension gun, part 246065.
C: This kit services the standard gun, parts 246075.
Part 107976E
E 2003 Nordson Corporation
Model A10A Automatic Electric Spray Gun
9
7
6
5
4
3
8
2
15
1
2
14
11
13
9
12
10
7
9
1200337A
Figure 5
Exploded View of Model A10A Automatic Electric Spray Gun
(Standard Needle and Seat and 2.5-in. Extension Shown)
Recommended Spare Part
Part
246072
Description
Note
Description
Note
ARMATURE
Optional Bar-Mounting Parts
Part
153158
981405
BLOCK, mounting
SCREW, square head, 3/8-16 x 0.750 in.
E 2003 Nordson Corporation
1
1
Part 107976E
10 Model A10A Automatic Electric Spray Gun
Specifications
Fluid Pressure:
75.86 bar (1100 psi) maximum
Electrical:
24 Vdc, 1.5 amps
Ambient Temperature:
60 _C (140 _F) maximum
Weight:
Standard:
Extended:
Dimensions:
See Figure 6
0.87 kg (1.9 lb)
0.91 kg (2.0 lb)
27 mm
(1.06 in.)
84 mm
(3.29 in.)
13 mm
(0.53 in.)
29 mm
(1.13 in.)
64 mm
(2.50 in.)
42 mm
(1.67 in.)
19 mm
(0.75 in.)
15 mm
(0.59 in.)
73 mm
(2.87 in.)
33 mm
(1.31 in.)
38 mm
(1.50 in.)
24 mm
(0.93 in.)
59 mm
(2.33 in.)
102 mm
(4.00 in.)
1200338A
Figure 6
Model A10A Automatic Electric Spray Gun Dimensions
Part 107976E
E 2003 Nordson Corporation
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