Nordson Tribomatic II Reference guide

TribomaticrII
Two-Gauge Control Unit
Customer Product Manual
Part 106569B
Issued 5/03
NORDSON CORPORATION AMHERST, OHIO USA

Part 106569B E2003 Nordson Corporation
Table of Contents
Safety 1-1....................................
Introduction 1-1...............................
Qualified Personnel 1-1........................
Intended Use 1-1..............................
Regulations and Approvals 1-1..................
Personal Safety 1-2...........................
Fire Safety 1-2................................
Grounding 1-3................................
Action in the Event of a Malfunction 1-3..........
Disposal 1-3..................................
Safety Labels 1-4.............................
Description 2-1...............................
Introduction 2-1................................
Front Panel Controls 2-2........................
Rear Panel Connections 2-3.....................
Specifications 2-4..............................
Symbols 2-4..................................
Installation 3-1................................
Circuit Board Setup 3-1........................
Mechanical Installation 3-3......................
Electrical Connections 3-3......................
Pneumatic Connections 3-4.....................
Operation 4-1.................................
Flow Rate and Diffuser Air Pressure Settings 4-1..
Startup 4-2...................................
Shutdown 4-3.................................
Maintenance 4-3...............................
Control Unit Settings 4-4........................
Troubleshooting 5-1..........................
Repair 6-1....................................
Control Module Removal 6-1....................
Solenoid Valve Replacement 6-2.................
Remove the Solenoid Valve 6-2...............
Install the Solenoid Valve 6-2.................
Air Gauge Replacement 6-4....................
Air Gauge Part 631123 (Barbed Fitting) 6-4....
Remove the Air Gauge 6-4................
Install the Air Gauge 6-4..................
Air Gauge Part 901260 (Threaded Fitting) 6-6..
Remove the Air Gauge 6-6................
Install the Air Gauge 6-6..................
Air Regulator Replacement 6-7..................
Circuit Board Replacement 6-8..................
Parts 7-1.....................................
Introduction 7-1...............................
Using the Illustrated Parts List 7-1............
Tribomatic II Single and Dual Control Units 7-2.....
Control Module 7-3............................
Alternate Air Gauge 7-4.....................
Solenoid Assembly 7-6.........................
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 1995. 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, the Nordson logo, and Tribomatic are registered trademarks of
Nordson Corporation.
Viton is a registered trademark of E.I. DuPont de Nemours and Company.
All other trademarks are the property of their respective owners.

Safety 1-1
Part 106569B
E2003 Nordson Corporation
Section 1
Safety
Introduction
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 all 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.
All phases of equipment installation must comply with all federal, state, and
local codes.

Safety
1-2
Part 106569B E2003 Nordson Corporation
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 any
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.
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.
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.
Fire Safety
To avoid a fire or explosion, follow these instructions.
SDo not smoke, weld, grind, or use open flames where flammable
materials are being used or stored.
SProvide adequate ventilation to prevent dangerous concentrations of
volatile materials or vapors. Refer to local codes or your material MSDS
for guidance.
SDo not disconnect live electrical circuits while 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.
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.

Safety 1-3
Part 106569B
E2003 Nordson Corporation
Grounding
WARNING: Operating faulty electrostatic equipment is hazardous and can
cause electrocution, fire, or explosion. Make resistance checks part of your
periodic maintenance program. If you receive even a slight electrical shock
or notice static sparking or arcing, shut down all electrical or electrostatic
equipment immediately. Do not restart the equipment until the problem has
been identified and corrected.
All work conducted inside the spray booth or within 1 m (3 ft) of booth
openings is considered within a Class 2, Division 1 or 2 Hazardous location
and must comply with NFPA 33, NFPA 70 (NEC articles 500, 502, and 516),
and NFPA 77, latest conditions.
SAll electrically conductive objects in the spray areas shall be electrically
connected to ground with a resistance of not more than 1 megohm as
measured with an instrument that applies at least 500 volts to the circuit
being evaluated.
SEquipment to be grounded includes, but is not limited to, the floor of the
spray area, operator platforms, hoppers, photoeye supports, and
blow-off nozzles. Personnel working in the spray area must be
grounded.
SThere is a possible ignition potential from the charged human body.
Personnel standing on a painted surface, such as an operator platform,
or wearing non-conductive shoes, are not grounded. Personnel must
wear shoes with conductive soles or use a ground strap to maintain a
connection to ground when working with or around electrostatic
equipment.
SOperators must maintain skin-to-handle contact between their hand and
the gun handle to prevent shocks while operating manual electrostatic
spray guns. If gloves must be worn, cut away the palm or fingers, wear
electrically conductive gloves, or wear a grounding strap connected to
the gun handle or other true earth ground.
SShut off electrostatic power supplies and ground gun electrodes before
making adjustments or cleaning powder spray guns.
SConnect all disconnected equipment, ground cables, and wires after
servicing equipment.
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 electrical power. Close pneumatic shutoff
valves and relieve pressures.
SIdentify the reason for the malfunction and correct it before restarting the
equipment.
Disposal
Dispose of equipment and materials used in operation and servicing
according to local codes.

Safety
1-4
Part 106569B E2003 Nordson Corporation
Safety Labels
Table 1-1 contains the text of the safety label on this equipment. The safety
label is provided to help you operate and maintain your equipment safely.
See Figure 1-1 for the location of the safety label.
Table 1-1 Safety Labels
Item Part Description
1. —
WARNING: Do not disconnect while circuit is live unless location is
known to be non-hazardous.
2. 129597 SAFETY INSTRUCTIONS
1. To be installed in accordance with all local codes and
ordinances, all pertinent statutes and regulations, and the
safety provisions of the Nordson manual.
2. Ground all equipment and other metal objects within
10 ft (3 m) of spray area. Keep spray area clean.
3. Work pieces must be grounded. Keep conveyor and
hangers clean.
4. Hold gun in bare hand. Wear shoes with conductive soles
such as leather. (Rubber soles are not conductive.)
5. Turn off power and ground nozzle before doing any cleaning
or other work on gun.
6. Do not store flammable materials in spraying area.
7. Caution: Shut off electrical power before breaking
connections or opening enclosure.
WARNING: Disconnect main power before servicing.
244644
WARNING: The following procedures MUST be followed when working
with this electrostatic spray equipment. Failure to follow these
instructions may result in a fire and/or serious personal injury. Display
this warning on the spray booth.
1. NO SMOKING. Keep open flames, hot surfaces, and sparks from
torches or grinding away from booth.
2. Turn the electrostatic power unit off when the spray gun is not in
use.
3. Shut down immediately in event of fire.
4. Maintain ground circuit on all conductive objects below 1 megohm to
prevent sparking. (ANSI/NFPA 33, Chapter 9, or local codes).
5. Shut down operation and correct grounds if sparking occurs.
6. Install fixed fire suppression system in accordance with
ANSI/NFPA 33, Chapter 7 (or local codes), before operating with
combustible powder.

Safety 1-5
Part 106569B
E2003 Nordson Corporation
DescriptionPartItem
7. Install automatic flame detectors in accordance with ANSI/NFPA 33,
Chapter 7 (or local codes), before operating automatic guns
8. Examine all equipment at the beginning of each work period and
repair or replace any damaged, loose, or missing parts.
9. Before cleaning or performing any maintenance on the electrostatic
spray gun, turn off the power unit and ground the nozzle. Maintain
electrostatic spray equipment in accordance with instruction manual.
Do not deviate. Do not substitute parts from other manufacturers.
10. Operator must be grounded to prevent shocks from static electricity.
Floor surface must be conductive. Footwear and gloves must be
static dissipative in accordance with ANSI Z41-1991 (or local
codes).
11. Air velocity through all booth openings must meet local requirements
and contain powder within the booth. If powder escapes from the
booth, shut down operation and correct the malfunction.
12. Powder may be toxic or be a nuisance dust hazard. Refer to
supplier’s MSDS. If exposed to dust during operation, maintenance,
or clean up, operators must use appropriate personal protective
equipment.
13. Do not use compressed air or organic solvents for removal of
powder from skin or clothing. Do use soap and water. Wash hands
before eating or smoking.
14. Guns, feeders, booths, etc., may be cleaned with clean dry air at
1.7 bar (25 psig).
If you have any questions concerning this electrostatic spray equipment, call
[phone], and ask to speak with the Powder Systems Group Technical
Service Department.
1401202A
2
7 BAR (100 PSI) MAX GUN
CONNECT
POWER
INPUT
IN WARNING
Do not disconnect while
circuit is live unless location
is known to be non-hazardous
PART NO.
SERIAL NO.
NORDSON SVERIGE AB ICAB DIV. MADE IN SWEDEN
50/60 HZ, 10.2 AMP
INPUT: 100-120/200-240 VAC
1
Figure 1-1 Saftey Labels

Safety
1-6
Part 106569B E2003 Nordson Corporation

Description 2-1
Part 106569B
E2003 Nordson Corporation
Section 2
Description
Introduction
The Nordson Tribomatic II two-gauge control units provide pneumatic and
electrical controls for Tribomatic II automatic powder spray guns. The
control units consist of one or two control modules installed in a
dual-module cabinet. The cabinets are normally installed in a standard
19-inch equipment rack. The modules are controlled by a Nordson MC-3,
Smart Spray, or Tribomatic master control unit installed in the same rack.
1401203A
12
Figure 2-1 Tribomatic II Control Unit (Dual-Module Cabinet Shown)
1. Control module 2. Cabinet

Description
2-2
Part 106569B E2003 Nordson Corporation
Front Panel Controls
1401204A
98
1
23456
7
Figure 2-2 Front Panel Controls
Table 2-2 Front Panel Controls
Item Description Function
1Power switch Activates the control module and energizes the flow rate
and diffuser air solenoid valves.
2Power LED (Green) Lights when the control module is turned on.
3Powder LED (Green) Lights when the control module is turned on and the
solenoid valves are energized, allowing air to flow to the
pump and diffuser.
4Low-charge alarm LED (Red) Flashes when the powder is charging below the alarm
setting.
5Digital display Displays the flow of current from the gun to ground,
measured in microamperes (A). This A reading is
affected by powder flow rate and velocity. The plus (+) or
minus (−) indicates whether the powder is charging
positively or negatively.
When the display function switch is held in the up position,
the display shows the low-charge alarm setting.
6Display function switch
(non-latching toggle switch)
Changes the digital display function. The display normally
shows the A output. When the switch is held in the up
position, the display shows the low-charge alarm setting.
7Low-charge alarm
potentiometer
Controls the low-charge alarm. Rotate to turn the alarm on
and off and to change the alarm setting.
8Diffuser air regulator and
gauge
Controls and indicates diffuser air pressure. Pull the
regulator knob out to change the air pressure, push it in to
lock the setting.
9Flow rate air regulator and
gauge
Controls and indicates powder pump flow rate (ejector) air
pressure. Pull the regulator knob out to change the air
pressure, push it in to lock the setting.

Description 2-3
Part 106569B
E2003 Nordson Corporation
Rear Panel Connections
1401205A
7 BAR (100 PSI) MAX GUN
CONNECT
POWER
INPUT
IN WARNING
Do not disconnect while
circuit is live unless location
is known to be non-hazardous
PART NO.
SERIAL NO.
NORDSON SVERIGE AB ICAB DIV. MADE IN SWEDEN
50/60 HZ, 10.2 AMP
INPUT: 100-120/200-240 VAC
2
3
4
6
5
1
Figure 2-3 Rear Panel Connections
Table 2-3 Rear Panel Controls
Item Description Function
1Exhaust air port Solenoid valve exhaust. Do not block.
26-mm straight tubing
connector
Diffuser air output. Pressure at regulator setting.
310-mm straight tubing
connector
Supply air input. 7 bar (100 psi) maximum air pressure.
46-mm straight tubing
connector
Flow-rate air output. Pressure at regulator setting.
5Gun ground Isolated gun ground wire connection.
65-pin receptacle Power/control cord connection.
−Module ground (not shown) Grounds module to cabinet. Cabinet has a ground stud
that must be connected to a true earth ground.

Description
2-4
Part 106569B E2003 Nordson Corporation
Specifications
Electrical
Input 100−120/200−240 Vac ( (10%), 50/60 Hz
1, 0.2 amps
Power Consumption 20 VA
Pneumatic
Input minimum 4 bar (60 psi)
Input maximum 7 bar (100 psi)
Nominal Operating
Pressures
Flow rate Air 1.8 bar (26 psi)
Diffuser Air 2.5 bar (36 psi)
Air Supply Quality Air must be clean and dry. Use a regenerative desiccant or refrigerated
air dryer capable of producing a 38 _F (3.4 _C) or lower dewpoint at 7 bar
(100 psi). A filter system with pre-filters and coalescent filters capable of
removing oil, water, and dirt in the submicron range should also be used
Symbols
Symbols used on this equipment are described in Figure 2-4.
1401206A
OFF ON GROUND FLOW-RATE AIR DIFFUSER AIR ALARM
Figure 2-4 Symbols Used on Control Unit

Installation 3-1
Part 106569B
E2003 Nordson Corporation
Section 3
Installation
WARNING: Allow only qualified personnel to perform the following tasks.
Follow the safety instructions in this document and all other related
documentation.
Circuit Board Setup
Before putting the control unit into service, switches on the circuit board
must be set for the correct input voltage, triggering method, and solenoid
activation timing, depending on your system configuration and the
Tribomatic spray gun used with the unit. It is easier to set these switches
before connecting power and air to the control unit.
1. Loosen the captive screws (3) securing the control module (4) to the
cabinet (1). Slide the control module out of the cabinet and disconnect
the ground wire (5) from the module, if necessary.
1401207A
2
3
5
1
4
Figure 3-1 Removing the Control Module from the Cabinet
1. Cabinet
2. Circuit board
3. Captive screws
4. Control module
5. Ground wire

Installation
3-2
Part 106569B E2003 Nordson Corporation
Circuit Board Setup (contd)
2. See Figure 3-2. and refer to Table 3-1 to set the switches.
3. Slide the electronic control module back into the cabinet and tighten the
captive screws at the four corners of the front panel.
NOTE: To maintain a dust-free environment inside the cabinet, make sure
the front- and rear-panel gaskets are undamaged and in place before
installing the control module in the cabinet.
Table 3-1 Jumper Block and Switch Settings
Switch SW3 — Set the switch to input voltage as follows:
110 100−120 Vac nominal input power. Units are shipped set for 110 Vac or local voltage.
220 200−240 Vac nominal input power.
NOTE: Input voltage must be 100−120 or 200−240 Vac (10%), 50/60 Hz, 1
Switch SW5 — Set the switch to the correct position for your application:
Stand Alone The power switch will activate the unit and start air flowing to the pump and diffuser.
Ext. Trigger The control unit will be controlled by a master control unit or other device.
Switch SW6 — This switch is not present on revision A or B circuit boards.
DELAY If using Tribomatic I automatic spray guns. The delay setting turns on flow rate air before
diffuser air.
DIRECT If using Tribomatic II spray guns.
1401208A
Figure 3-2 Circuit Board Setup

Installation 3-3
Part 106569B
E2003 Nordson Corporation
Mechanical Installation
Install the cabinet into an empty slot in a standard 19-inch equipment rack.
Rails will be needed to support the weight of the cabinet. Secure the
cabinet to the rack by installing properly sized screws through the brackets
on the sides of the cabinet.
Electrical Connections
WARNING: Install a locking disconnect switch or breaker in the service line
ahead of the equipment so power can be shut off during installation or
repair.
NOTE: Units are shipped set for 110 Vac or local voltage. Make sure
switch SW3 is set correctly before connecting electrical power to the control
unit.
CAUTION: Equipment damage may occur if the control unit is connected to
any line voltage other than that stated on the ID plate.
WARNING: If the control unit is within the spray area or any area defined
as hazardous, disconnect electrical power at a breaker or disconnect in the
service line ahead of the control unit before disconnecting the power cord
from an outlet.
1. See Figure 3-3. Connect the unit’s power cord according to the
following table.
Externally Triggered Units Standalone Units
a. Plug the power cord into the POWER INPUT
receptacle on the rear panel.
b. Route the power cord through a dust-tight
strain-relief connector in the rear panel of the
master control unit.
c. Connect the leads to one of the plug connectors
on the master control unit’s distribution board
exactly as described below.
a. Plug the power cord into the POWER INPUT
receptacle on the rear panel.
b. Cut the black and white leads off at the cord
insulation.
c. Connect the brown, blue, and green/yellow
wires to a three-pronged power plug. Wire
functions as described below.
d. Plug the cord into a socket. Make sure the
voltage supplied is correct.
M/C Connection Function Wire Color
L (L1) Line (Hot) Brown
N (L2) Neutral Blue
PE (GND) Ground Green/Yellow
A/P Alarm Black
TRIG External Trigger White
2. Connect the gun ground wire to the GUN CONNECT stud on the rear
panel.

Installation
3-4
Part 106569B E2003 Nordson Corporation
Electrical Connections (contd)
WARNING: The gun must always be connected to ground through the gun
cable and control unit when spraying powder or cleaning the gun with
compressed air. Without a ground connection the gun will become
electrostatically charged. Personnel touching the gun could receive a
shock.
3. Connect the ground strap furnished with the control unit to the ground
stud located on the rear of the cabinet. Secure the clamp to an earth
ground or to the ground studs in the equipment rack. Make sure the
rack is grounded.
1401209A
7 BAR (100 PSI) MAX GUN
CONNECT
POWER
INPUT
IN WARNING
Do not disconnect while
circuit is live unless location
is known to be non-hazardous
PART NO.
SERIAL NO.
NORDSON SVERIGE AB ICAB DIV. MADE IN SWEDEN
50/60 HZ, 10.2 AMP
INPUT: 100-120/200-240 VAC
1
2
3
5
4
Figure 3-3 Electrical and Pneumatic Connections
1. Diffuser air output
2. Air input
3. Flow rate air output
4. Gun ground connection
5. Power cord receptacle
Pneumatic Connections
The maximum input air pressure is 7 bar (100 psi). Air must be clean and
dry. Refer to the Description section for recommendations on air filtering
and conditioning equipment.
Air Type Tubing size From To
Input 10-mm IN connector (2) on the rear pane lair supply or rack
manifold
Output
Flow rate 6-mm
Flow rate
connection (1)
on rear panel
“F” connection on
powder pump
Diffuser 6-mm
Diffuser
connection (3)
on rear panel
Diffuser connection
on spray gun
NOTE: Install a shut-off valve in the supply line in front of the manifold or control unit.

Operation 4-1
Part 106569B
E2003 Nordson Corporation
Section 4
Operation
WARNING: Allow only qualified personnel to perform the following tasks.
Follow the safety instructions in this document and all other related
documentation.
Read all system component manuals before operating your powder spray
system. A thorough understanding of system components and their
operation will help you operate the system safely and efficiently.
The system must be connected to safety interlocks which will shut it down if
a fire is detected or the booth fan shuts down.
Flow Rate and Diffuser Air Pressure Settings
Flow rate and diffuser air pressures are two variables that affect
system performance and coating quality. You will use powder more
economically and obtain better quality coatings as you gain experience
setting air pressures.
Table 4-1 Flow Rate and Diffuser Air Pressure Settings
Air Type Symbol Initial Setting Function Adjusting the Pressure
Flow Rate 1.8 bar
(26 psi)
Controls the volume of
the powder delivered to
the spray gun.
Increasing will increase the
amount of powder sprayed and the
film build on the parts.
If the pressure is too high:
Spowder will not wrap around
part edges
Stoo much powder will be
sprayed
Spump and spray gun parts will
wear faster
Diffuser 2.5 bar
(36 psi)
Controls the density
(powder-to-air ratio)
and velocity of the
powder through the
spray gun.
Increasing will decrease the
density of the powder and increase
the powder charge.
If the pressure is too high the spray
gun parts may wear faster.
Decreasing will increase the
density of the powder-and provide
better coverage.
If the pressure is too low the
powder may clog the spray gun
passages.

Operation
4-2
Part 106569B E2003 Nordson Corporation
Startup
Before spraying powder, make sure the booth vent fans are on, the powder
recovery system is operating, and the powder in the feed hopper is
thoroughly fluidized.
WARNING: All electrically conductive equipment in the spray area must be
grounded. Ungrounded or poorly grounded equipment can store an
electrostatic charge which can give personnel a severe shock, or arc and
cause a fire or explosion.
1. Turn on the system electrical power and air supply.
2. Turn on the master control unit. If the control unit is set up to operate
independently (standalone), disregard this step.
3. See Figure 4-1. Turn on the control unit power switch (1). The
power (2) and powder (3) LEDs will light.
4. Set the flow-rate and diffuser air pressures as described in Table 4-1.
Adjust these pressures for economical powder use, desired film build,
type of powder used, spray room humidity, and other operating
variables.
NOTE: High air pressures will cause powder contact surfaces to wear
faster. Operate the powder spray system at the lowest possible air
pressures.
5. Spray powder on a part and observe the spray pattern and film build.
Adjust the flow rate and diffuser air pressures until you obtain the spray
pattern and film build desired.
6. Note the A output shown on the digital display (5). Press up on the
switch (6) to display the low-charge alarm setting.
7. Turn the low-charge alarm potentiometer (7) to set the low-charge alarm
to 0.5 A below the A output. Release the switch to return to the A
output display.
8. Record the flow rate and diffuser air pressures, the powder type, and the
A output on the chart furnished at the end of this section. Use these
values to set air pressures the next time the same powder is used and
to monitor the powder charge.

Operation 4-3
Part 106569B
E2003 Nordson Corporation
1401204A
98
1
23456
7
Figure 4-1 Front Panel Controls
1. Power switch
2. Power LED
3. Powder LED
4. Low-charge alarm LED
5. Digital display
6. Display function switch
7. Low-charge alarm potentiometer
8. Diffuser air regulator and gauge
9. Flow-rate air regulator and gauge
Shutdown
Master Control Unit: Turn it off. This will shut off all the control units
connected to it.
Control unit is set up as a standalone unit: Turn off the control unit
power switch.
Maintenance
Exercise good housekeeping practices with all components of a powder
spray system. Dust and powder accumulating on electrostatic equipment
can cause malfunctions and fire and shock hazards. Clean the entire
system and surrounding area periodically. Make the following procedures
part of a scheduled maintenance program.
WARNING: Do not disconnect the power cord from the control unit while
power is on if the unit is in a hazardous location.
Daily SOpen the supply line drain valve to check for water and oil in the air supply.
SDrain the air filters. Refer to the air dryer manual for maintenance procedures.
SMake sure all system safety interlocks and fire detection systems are connected and
functioning properly.
Weekly SCheck the module-to-cabinet and cabinet-to-ground connections. Losing the ground
connection will affect transfer efficiency and create a safety hazard.
SClean powder and dust off the control unit cabinet with a clean cloth or brush.

Operation
4-4
Part 106569B E2003 Nordson Corporation
Control Unit Settings
Use this chart to record your control unit settings and A output for different
powders and parts. This chart can be copied and posted next to the control
unit. Significant deviations from the recorded A output could indicate
problems with the powder, air pressures, or gun.
Powder Part
Air Pressures
A Output
Flow-rate Diffuser