Nordson Auto-Flo RT Gun Reference guide

Auto-Flo RT Gun
Customer Product Manual
Part 1074874A--02
Issued 10/08
NORDSON CORPORATION •AMHERST, OHIO •USA

Part 1074874A--02 E2008 Nordson Corporation
Safety 1......................................
Qualified Personnel 1........................
Intended Use 1..............................
Regulations and Approvals 1..................
Personal Safety 1............................
High-Pressure Fluids 1....................
Fire Safety 2................................
Halogenated Hydrocarbon Solvent Hazards 2.
Action in the Event of a Malfunction 2..........
Disposal 2..................................
Description 3.................................
Installation 4..................................
Install the Auto-Flo RT Gun
onto the SDS Meter 4........................
Install a Nozzle 4............................
Install a QUISS RTVision
Sensor Head 4..............................
Operation 4...................................
Maintenance 4................................
Troubleshooting 6.............................
Repair 6......................................
Consumable Items 6.........................
Remove the Gun
from the SDS Meter 7........................
Replace the Seal Cartridge 8..................
Replace the Temperature Sensor 8.............
Replace a Heater 8..........................
Put the Auto-Flo RT
Gun Back into Service 8......................
Parts 10.......................................
Auto-Flo RT Gun 10...........................
Seal Kit 12...................................
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
Notice
This is a Nordson Corporation publication which is protected by copyright.
Original copyright date 2006. 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.
All other trademarks are the property of their respective owners.

Auto-Flo RT Gun 1
Part 1074874A--02
E2008 Nordson Corporation
Safety
Read and follow these safety instructions. Task- and
equipment-specific warnings, cautions, and instructions
are included in equipment documentation where
appropriate.
Make sure all equipment documentation, including these
instructions, is accessible to persons operating or
servicing equipment.
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
Susing incompatible materials
Smaking unauthorized modifications
Sremoving or bypassing safety guards or interlocks
Susing incompatible or damaged parts
Susing unapproved auxiliary equipment
Soperating equipment in excess of maximum ratings
Regulations and Approvals
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.
Personal Safety
To prevent injury follow these instructions.
SDo not operate or service equipment unless you are
qualified.
SDo 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.
SKeep 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.
SRelieve (bleed off) hydraulic and pneumatic pressure
before adjusting or servicing pressurized systems or
components. Disconnect, lock out, and tag switches
before servicing electrical equipment.
SWhile 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.
SIf 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.
SObtain 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.
SMake sure the spray area is adequately ventilated.
STo 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:

Auto-Flo RT Gun
2
Part 1074874A--02 E2008 Nordson Corporation
WARNING: Any injury caused by high pressure
liquid can be serious. If you are injured or even
suspect an injury:
SGo to an emergency room immediately.
STell the doctor that you suspect an injection injury.
SShow him this card
STell him what kind of material you were spraying
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.
SGround 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.
SShut down all equipment immediately if you notice
static sparking or arcing. Do not restart the
equipment until the cause has been identified and
corrected.
SDo not smoke, weld, grind, or use open flames
where flammable materials are being used or stored.
SDo not heat materials to temperatures above those
recommended by the manufacturer. Make sure heat
monitoring and limiting devices are working properly.
SProvide adequate ventilation to prevent dangerous
concentrations of volatile particles or vapors. Refer
to local codes or your material MSDS for guidance.
SDo not disconnect live electrical circuits when
working with flammable materials. Shut off power at
a disconnect switch first to prevent sparking.
SKnow 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.
SShut off electrostatic power and ground the charging
system before adjusting, cleaning, or repairing
electrostatic equipment.
SClean, maintain, test, and repair equipment
according to the instructions in your equipment
documentation.
SUse only replacement parts that are designed for use
with original equipment. Contact your Nordson
representative for parts information and advice.
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 Symbol Prefix
Fluorine F “Fluoro-”
Chlorine Cl “Chloro-”
Bromine Br “Bromo-”
Iodine I “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.
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:
SDisconnect and lock out system electrical power.
Close hydraulic and pneumatic shutoff valves and
relieve pressures.
SIdentify 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.

Auto-Flo RT Gun 3
Part 1074874A--02
E2008 Nordson Corporation
Description
See Figure 1. The Auto-Flo RT gun is designed for use
as a material outlet valve on an SDS Meter. It can be
wired for 120- and 240-volt circuits.
The Auto-Flo RT gun can be configured with a QUISS
RTVision sensor head to provide continuous monitoring
of the material bead during the application process.
Refer to Table 1 for the specifications.
Figure 1 Auto-Flo RT Gun
Table 1 Specifications
Item Specification
Normal Operating
Temperature 150 _F
(65.5 _C)
Maximum Seal
Operating Temperature 200 _F
(93 _C)
Maximum Fluid
Operating Pressure 3000 psi (206 bar)
Maximum Air
Inlet Pressure 120 psi (8 bar)
Actuating
Air Pressure 60--120 (4--8 bar)
Air
Quality Oil-free and filtered through 5-micron or
finer particulate filter
Air
Usage 0.04 scfm (0.0012 m3)
Dimensions Mounted to an
SDS Meter with QUISS
RTVision Sensor
Head Installed
SeeFigure2.
Note: Specifications are approximate.
32.92 in.
(83.6 cm)
7in.
(17.8 cm)
3.15 in.
(8 cm)
2.63 in.
(6.6 cm)
7in.
(17.8 cm)
QUISS RTVision
SENSOR HEAD
Figure 2 Typical Dimensions

Auto-Flo RT Gun
4
Part 1074874A--02 E2008 Nordson Corporation
Installation
See Figure 3 and perform the applicable procedures.
WARNING: Allow only qualified personnel to
perform the following tasks. Follow the safety
instructions in this document and all other
related documentation.
Install the Auto-Flo RT
Gun onto the SDS Meter
1. Disconnect and lockout power to the SDS Meter (1).
2. Turn off the supply air to the SDS Meter. Relieve all
fluid and air pressures.
NOTE: The O-ring (2) and screws (10) are shipped with
the Auto-Flo RT gun in a separate package.
3. Lubricate the O-ring (2) with TFE grease. Install the
O-ring onto the Auto-Flo RT gun (3).
4. Apply Loctite 242 adhesive to the threads of the
screws (10). Install the Auto-Flo RT gun (3) onto the
SDS meter (1) using the screws. Tighten the screws
to 50 in. lb (5.6 N•m).
5. Connect the open air line (12) the open fitting (11).
Connect the close air line (13) to the close
fitting (14).
6. Connect the gun cable (15) to the bulk
unloader controller.
Install a Nozzle
NOTE: The nozzle type is dependent upon the
application. Contact a Nordson representative for
assistance with nozzle selections if necessary.
Use the retaining nut (8) to secure a nozzle (9) to the
Auto-Flo RT gun (3). Tighten the retaining nut securely.
Install a QUISS
RTVision Sensor Head
Perform the following steps to install a QUISS RTVision
sensor head to the Auto-Flo RT gun.
NOTE: Refer to the QUISS RTVision system
documentation for detailed information about the sensor
head (5) if necessary.
1. Remove the screws (7) and lock washers (6) from
the Auto-Flo RT gun (3).
2. Install the QUISS RTVision sensor head (5) onto
the Auto-Flo RT gun (3) using the lock washers (6)
and screws (7). Tighten the screws to
15 in. lb (1.6 N•m).
3. Connect the cables (4) from the QUISS RTVision
system to the sensor head (5).
Operation
Operation of the Auto-Flo RT gun is dependent upon the
system and application requirements.
Maintenance
WARNING: Allow only qualified personnel to
perform the following tasks. Follow the safety
instructions in this document and all other
related documentation.
NOTE: It may be necessary to adjust frequencies due to
the facility enviornment, process parameters, or material
being applied.
The frequencies listed in Table 2 are only guidelines.
Always perform preventive maintenance procedures
according to your facility maintenance schedule.
Table 2 Typical Maintenance Schedule
Frequency Task
Daily Check the nozzle for wear and
replace if necessary.
Periodically Check the air lines for leaks or
damage and replace if
necessary.
Make sure that the gun is
mounted securely.
See Figure 3. Check the weep
hole (16) for signs of adhesive.
Rebuild the Auto-Flo RT gun if
adhesive weepage is excessive.

Auto-Flo RT Gun 5
Part 1074874A--02
E2008 Nordson Corporation
11
14
10
8
94
13
1
5
3
2
12
6
7
15
16
Figure 3 Installation

Auto-Flo RT Gun
6
Part 1074874A--02 E2008 Nordson Corporation
Troubleshooting
WARNING: Allow only qualified personnel to
perform the following tasks. Follow the safety
instructions in this document and all other
related documentation.
NOTE: Some problems may originate with other
components in the system and not with the Auto-Flo RT
gun. Refer to the appropriate system manuals for more
information if the Corrective Actions listed here do not
solve the problem.
Problem Possible
Cause Corrective Action
1. Leaking
around
nozzle or
nozzle nut
Dirty or
damaged
metal sealing
surfaces
Clean nozzle,
and clean or
replace packing
cartridge.
2. Leaking
through
weep hole
in valve
body
Worn seal
cartridge Replace seal cartridge.
3. Auto-Flo
RT Gun
responds
slowly
Worn seal
cartridge
and/or air
piston
Replace seal
cartridge.
Low air
pressure Increase air pressure.
Repair
WARNING: Allow only qualified personnel to
perform the following tasks. Follow the safety
instructions in this document and all other
related documentation.
Consumable Items
Table 3 lists the consumable items that are required to
repair the Auto-Flo RT gun.
Table 3 Consumable Items
Item Part Application
Loctite 242
Adhesive 900464 Apply to threads of applicable screws.
Heat Sink
Compound 900298 (5 oz) Apply to heaters and temperature
sensor.

Auto-Flo RT Gun 7
Part 1074874A--02
E2008 Nordson Corporation
Remove the Gun
from the SDS Meter
1. See Figure 4. Disconnect and lockout power to the
SDS Meter (1).
2. Turn off the supply air to the SDS Meter (1). Relieve
all fluid and air pressures.
3. Disconnect the gun cable (13) from the bulk
unloader controller.
4. Only perform this step if using the Auto-Flo RT gun
with a QUISS RTVision sensor head (5):
a. Disconnect the QUISS RTVision system
cables (4) from the sensor head (5).
b. Remove the screws (7) and lock washers (6)
securing the QUISS RTVision sensor head (5) to
the Auto-Flo RT gun (3).
5. Disconnect the air lines (10, 11) from the
fittings (9, 12).
6. Remove the screws (8) securing the Auto-Flo RT
gun (3) to the SDS meter (1). Remove the O-ring (2)
from the gun (3). Discard the O-ring.
9
12
8
4
11
1
5
3
2
10
67
13
Figure 4 Removing the Gun from an SDS Meter

Auto-Flo RT Gun
8
Part 1074874A--02 E2008 Nordson Corporation
Replace the Seal Cartridge
See Figure 5 and use the following procedure to
replace the seal cartridge.
1. Remove the screws (5) securing the seal
cartridge (1) to the adapter (4). Remove the seal
cartridge from the adapter.
2. Remove the fittings (2) from the old seal cartridge (1)
and install them onto the new seal cartridge. Tighten
the fittings securely.
3. Apply Loctite 242 adhesive to the threads of the
screws (5). Install the seal cartridge (1) onto the
adapter (4) using the screws. Tighten the screws
to 50 in. lb (5.6 N•m).
NOTE: Instructions for rebuilding the seal cartridge are
included with Seal Cartridge Kit 1074446.
Replace the Temperature Sensor
See Figure 5 and use the following procedure to replace
the temperature sensor.
1. Remove the screws (5) securing the seal
cartridge (1) to the adapter (4). Remove the seal
cartridge from the adapter.
2. Remove the screws (8) securing the cover (7) to the
electrical box (10).
3. Loosen the screws on the 2-station connector (6)
and remove the temperature sensor wires (12).
4. Remove the temperature sensor (11) from the
adapter (4).
5. Apply heat sink compound to the new temperature
sensor (11) and insert it into the adapter (4).
6. Route the temperature sensor wires through the
slot on the adapter (4) and insert them into the
2-station connector (6). Tighten the 2-station
connector screws.
7. Apply Loctite 242 adhesive to the threads of the
screws (8). Install the cover (7) onto the electrical
box (10) using the screws. Tighten the
screws securely.
8. Apply Loctite 242 adhesive to the threads of the
screws (5). Install the seal cartridge (1) onto the
adapter (4) using the screws. Tighten the screws
to 50 in. lb (5.6 N•m).
Replace a Heater
See Figure 5 and use the following procedure to
replace a heater.
1. Remove the screws (5) securing the seal
cartridge (1) to the adapter (4). Remove the seal
cartridge from the adapter.
2. Remove the screws (8) securing the cover (7) to the
electrical box (10).
3. Remove the heater wires (14) from the applicable
wire connector (9).
4. Remove the heater (3) from the adapter (4). If
necessary, use a wire rod (13) as shown to push the
heater out of the adapter.
5. Apply heat sink compound to the new heater (3) and
install it into the adapter (4).
NOTE: The heaters can be wired for either 120- or
240-volt circuits. Refer to the wiring diagrams shown in
Figure 5 if necessary.
6. Route the heater wires (14) through the slot on the
adapter (4). Connect the heater wires to the
applicable wire connector (9).
7. Apply Loctite 242 adhesive to the threads of the
screws (8). Install the cover (7) onto the electrical
box (10) using the screws. Tighten the
screws securely.
8. Apply Loctite 242 adhesive to the threads of the
screws (5). Install the seal cartridge (1) onto the
adapter (4) using the screws. Tighten the screws
to 50 in. lb (5.6 N•m).
Put the Auto-Flo RT
Gun Back into Service
See Figure 3 and refer to the Install the Auto-Flo RT Gun
onto the SDS Meter procedure to put the Auto-Flo RT
gun back into service.

Auto-Flo RT Gun 9
Part 1074874A--02
E2008 Nordson Corporation
240 VOLT CIRCUIT
CORDSET
WIRE 5
WIRE 3
WIRE 2
WIRE 1
HEATER
HEATER
WIRE A
WIRE B
WIRE C
WIRE D CORDSET
TEMP. SENSOR
HEATER
HEATER
120 VOLT CIRCUIT
ELECTRICAL BOX
1
67
9
8
311
TYPICAL WIRE ROUTING
ONLY REMOVED
FOR CLARITY.
10
5
5
5
5
SCREW LOCATION
TEMP. SENSOR
2
2
4
13
14
12
Figure 5 Replacing Parts

Auto-Flo RT Gun
10
Part 1074874A--02 E2008 Nordson Corporation
Parts
To order parts, call the Nordson Customer Service
Center or your local Nordson representative.
Auto-Flo RT Gun
See Figure 6 and refer to the following parts list.
1
56
2
4
3
8
11
313
12
314 3
18 19 20 22
3
17
16
3
67
9
9
9
3
923
21
24
10
15
Figure 6 Parts

Auto-Flo RT Gun 11
Part 1074874A--02
E2008 Nordson Corporation
Item Part Description Quantity Note
—1074307 Gun, Auto-Flo RT 1
11074308 SCartridge, seal 1 A
2982171 SScrew, socket, M5 x 60 2
3900464 SLoctite 242, 50 ml 1
4971521 SElbow, male, 1/4tube x 1/8NPT 2
51062768 SHeater, 120 Vac, 25 watt 2
6900298 SCompound, heat sink, 5 oz 1
7939523 SSensor, temperature 1
81074386 SAdapter, heated 1
9982028 SScrew, socket, M5 x 20 12
10 1031834 STFE grease AR
11 152290 SNut, retaining 1
12 1062170 SAdapter, insulator 1
13 983401 SWasher, lock split, M5 2
14 ------ SName plate 1
15 ------ SScrew 4
16 1060683 SCord set, SDS 240 volt 1
17 1072035 SBox, electrical 1
18 983524 SWasher, lock, external #6 1
19 981011 SScrew, 6-32 x 0.250 1
20 939220 SConnector wire set 2/3 B
21 939586 SConnector, 2-station 1
22 1062357 SCover 1
23 982636 SScrew, button, M5 x 12 2
24 940133 SO-ring, Viton, 0.426 ID x 0.070 wide 1 C
NS 242867 STag, warning 1
NS 247646 SCard, medical alert injection 1
NS 178475 STag, hot surface 1
NOTE A: Order Cartridge Seal Kit 1074446 to reduce downtime. This kit includes instructions for rebuilding the
seal cartridge.
B: Two wire connector sets are required for 120 Vac configurations. Three wire connector sets are required
for 240 Vac configurations.
C: This part is included with item 1 and can also be ordered separately.
AR: As Required
NS: Not Shown

Auto-Flo RT Gun
12
Part 1074874A--02 E2008 Nordson Corporation
Seal Kit
See Figure 7. The following seal kit is available for the
Auto-Flo RT gun. This kit includes instructions for
replacing the cartridge seals.
1
2
3
4
5
8
6
7
Figure 7 Seal Kit
Item Part Description Quantity Note
—1074446 Kit, seal 1 A
1------ SO-ring, Viton, 1.428 x 0.070 1
2------ SO-ring, Viton, 0.188 x 0.313 x 0.063 1
3------ SSeal, Polymyte 1 B
4------ SRetaining ring, 43, push-on 1 B
5------ SO-ring, Viton, 0.864 ID x 0.070 W 1
6------ SO-ring, Viton, 0.489 ID x 0.070 W,10414 1
7------ SO-ring, Viton, 0.562 x 0.688,10415 1
8------ SO-ring, Viton, 0.426 ID x 0.070 W,10413 1
NS ------ SGrease fitting, 1/4-28 1
NOTE A: This kit includes instructions for rebuilding the seal cartridge.
B: Order retainer tool 1073157 to properly install this part.
NS: Not Shown