A-T Controls Triad Controls WE Series User manual


WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
1 12/17/19
www.atcontrols.com IOM8011 REVISION 01
Installation and Operation Manual
WE/XE/SE-690 thru WE/XE/SE-25900
XC-00690 thru XC-25900


WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
2 12/17/19
www.atcontrols.com IOM8011 REVISION 01
Contents
1. Purpose .......................................................................................................................................................................... 3
2. Safety.............................................................................................................................................................................. 3
Safety Notices ...................................................................................................................................................... 3
Safety Instructions ............................................................................................................................................... 3
3. Introduction ..................................................................................................................................................................... 3
Storage ................................................................................................................................................................ 3
Initial Inspection ................................................................................................................................................... 4
Terminology ......................................................................................................................................................... 4
4. Information and Features ............................................................................................................................................... 4
Standard Specification ......................................................................................................................................... 4
Standard Performance Technical Data ............................................................................................................... 5
4.2.1. WE/SE/XE Series .......................................................................................................................................... 5
4.2.2. XC Series ...................................................................................................................................................... 5
Optional Features ................................................................................................................................................ 5
Standard Model External Parts ............................................................................................................................ 6
4.4.1. Size -690 thru -10500 .................................................................................................................................... 6
4.4.2. Size -17500 and -25900 ................................................................................................................................ 6
4.4.3. Standard Model Internal Parts ...................................................................................................................... 6
Manual Operation Handwheel ............................................................................................................................. 7
Space Heater ....................................................................................................................................................... 7
5. Installation ...................................................................................................................................................................... 7
Pre-Installation ..................................................................................................................................................... 7
Tools .................................................................................................................................................................... 7
Actuator Mounting................................................................................................................................................ 8
5.3.1. Mounting Base Details (ISO 5211) ............................................................................................................... 8
5.3.2. Drive Bushing ................................................................................................................................................ 9
Housing Cover ..................................................................................................................................................... 9
Limit Switch Setting ............................................................................................................................................. 9
Torque Switch Setting ....................................................................................................................................... 10
Mechanical Travel Stop Adjustment .................................................................................................................. 10
Control Options .................................................................................................................................................. 10
6. Wiring and Operation .................................................................................................................................................... 10
Wiring ................................................................................................................................................................. 11
Grounding .......................................................................................................................................................... 11
Operation ........................................................................................................................................................... 11
6.3.1. General........................................................................................................................................................ 11
6.3.2. 3 Phase and DC Voltage Actuators ............................................................................................................ 12
6.3.3. Jamming ...................................................................................................................................................... 12
7. Maintenance ................................................................................................................................................................. 12
8. Troubleshooting ............................................................................................................................................................ 13

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WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
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1. Purpose
This manual provides explanation on the installation,
operation and maintenance of WE, SE, XE and XC
series electric actuators. Not all options are covered in
this manual. For additional details on an option, refer to
that option’s specific manual.
2. Safety
Safety Notices
WARNING: Identifies a potentially
hazardous situation or practice that may
lead to personal injury or death.
SHOCK HAZARD: Indicates dangerous
voltage may be present.
CAUTION: Indicates general precaution
that could lead to personal injury or
damage to equipment.
Safety Instructions
 This device was shipped from the factory in a proper
condition to be safely installed and operated in a
hazard-free manner. The notes and warnings in this
document and on the actuator should be maintained
and followed to ensure safe operation of the device.
 Take all necessary precautions to prevent damage
to the actuator due to rough handling, impact, or
improper storage.
 Do not use abrasive compounds to clean the
actuator, or scrape metal surfaces with any objects.
 The system controlling the actuator must have
proper safeguards to prevent damage to equipment,
or injury to personnel should failure of system
components occur.
 A qualified person in terms of this document is one
who is familiar with the installation, commissioning
and operation of the electric actuator and who has
appropriate qualifications, which may include:
o Is trained in the operation and maintenance of
electric equipment and system in accordance
with established safety practices.
o Is trained or authorized to energize, de-energize,
ground, tag and lock electric circuits and
equipment in accordance with established safety
practices.
o In cases where the actuator is installed in a
potentially explosive (hazardous) location, is
trained in the installation, commissioning,
operation and maintenance of equipment in
hazardous locations.
 The actuator must be installed, commissioned,
operated and repaired by qualified personnel.
 All installation, commissioning, operation and
maintenance must be performed under strict
observation of all applicable codes, standards and
safety regulations.
 Reference is specifically made here to observe all
applicable safety regulations for actuators installed
in potentially explosive (hazardous) locations.
XC actuators must observe the following installation
instructions.
 Use supply wires suitable for at least 90°C (194°F)
 Disconnect circuit before removing cover.
 Install in location that shall not be exposed to acetic
acid or methanol.
 Install a seal within 50mm of the enclosure.
3. Introduction
Storage
Actuators must be installed in a clean, cool and dry
environment off the floor and covered.
Actuators should be stored with the cover installed and
cable entries sealed.
When actuators are stored outdoors, they must be
stored off the ground and high enough to prevent being
immersed in water or buried in snow.

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WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
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Initial Inspection
Ensure product specification on nameplate and wiring
diagram matches the application and order.
Check actuator for any physical damage that may have
occurred during shipment.
If there are any discrepancies, contact your Triac
distributor to solve the problem immediately.
Terminology
Standard actuator direction and position references are
as follows.
Close = Clockwise
Open = Counter-clockwise
For the sake of this document, these terms may be used
interchangeably.
4. Information and Features
The WE, SE, XE and XC series electric actuators are for
use on quarter-turn valves and dampers requiring
between 690 to 25900 in-lbs of torque to operate.
Actuator positioning is achieved by travel limit switches
that disconnect power to the motor when engaged by
cams attached to actuator output shaft. A thermal
protector switch is built into the motor windings to
automatically disconnect the motor power if the motor
temperature exceeds the motor rating. Torque switches
are included on all actuators, except -690 size, as a
safeguard to prevent stalling and overheating the motor.
The ratio of the motor and gear train determines the
actuator speed and utilizes two worm gear sets to
transfer the motor torque to the output shaft. The double
worm gear configuration prevents the load from back
driving the output shaft. Accurate positioning is achieved
by the indicator cam shaft connecting directly to the
output drive.
Standard Specification
Enclosure
WE: Weatherproof, IP67, CSA approved for NEMA 4, 4X
SE: Submersible, IP68, 10m for 72hrs. Type 4, 4X & 6
XE: ATEX/IECEx certified to Ex d IIB T4 Gb, IP67
XC: CSA Class I, Division 1, Group C & D, T4; Ex d IIB T4 Gb, Class I, Zone 1, AEx d IIB T4 Gb
Supply Power
12/24VDC,
24/110/220VAC 1PH, 50/60Hz, ±10%
220/380/440/460/480 VAC 3PH, 50/60Hz, ±10%
Motor Class F reversible induction motor, fan cooled
Duty Cycle WE/XE/SE: IEC60034-1 S4, 50-70%, 1200 starts per hour (50% max torque at 77°F (25°C))
XC: IEC60034-1 S4, 30-70%, (100% max torque at 140°F (60°C))
Operational Limit Switches Open / Close, SPDT, 16A 1/2HP 125/250VAC, 0.6A 125VDC, 0.3A 250VDC
Auxiliary Limit Switches Open / Close, SPDT, 16A 1/2HP 125/250VAC, 0.6A 125VDC, 0.3A 250VDC
Torque Switches Open / Close, SPDT, 16A 1/2HP 125/250VAC, 0.6A 125VDC, 0.3A 250VDC
Stall Protection/Operating Temp Built-in thermal protection, open 302°F (150°C) / close 207°F (97°C)
Travel Angle 0 to 90° ± 10°
Indicator Continuous position indicator
Manual Override Declutching mechanism
Self-Locking Provided by double worm gearing
Travel Stops 2 x external adjustable screws
Space Heater 5W or 10W Anti-condensation
Conduit Entries 2 x 3/4" NPT
Lubrication Grease moly (EP type)
Terminal Block Spring loaded lever push type
Materials Steel, Aluminum alloy, Al bronze, Polycarbonate
Ambient Temperature WE/SE Standard: -4°F (-20°C) to 158°F (70°C)
XE/XC Standard: -4°F (-20°C) to 140°F (60°C)
Ambient Humidity 90% RH Max. (non-condensing)
Vibration X Y Z 10g, 0.2~34Hz, 30 minutes
External Coating Anodizing treatment before Polyester dry powder


WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
5 12/17/19
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Standard Performance Technical Data
4.2.1. WE/SE/XE Series
4.2.2. XC Series
Optional Features
Explosion-proof enclosure XE/XC Series only
Watertight enclosure (IP68 10M 72HR) SE Series
Potentiometer unit (1K ~10K) WE/XE/SE Series
Proportional / Modulating control - See TMC3 or TDC servo cards WE/XE/SE/XC Series
Additional Aux switches (SPDT, 250V AC 10A Rating) WE/XE/SE Series
SICU Semi-integral control unit (Local/Remote Selector Switches) WE/XE/SE Series - except 690
ICU Intelligent Digital control unit (Local/Remote Selector Switches WE/XE/SE Series - except 690
Current position transmitter (output 4-20mA DC) WE/XE/SE Series
Extended Rotation 120º, 180º, 270º turn WE/XE/SE Series - except 10500 & 25900
Signal lamp unit (white-power on, red-close, green-open, yellow-over torque) WE/XE/SE Series
Fire Proofing Actuator 1050 ±5ºC/50 min consult factory
Fire Proofing Actuator 250 ±5ºC/150 min consult factory


WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
6 12/17/19
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Standard Model Parts
4.4.1. Size -690 thru -10500
4.4.2. Size -17500 and -25900
4.4.3. Standard Model Internal Parts
CAUTION:
The -690 size actuator does not contain torque switch assembly. Forcing
actuator into mechanical stops, or preventing rotation in some other
manner may damage motor.
Window & Indicator
Lever
Hand Wheel
Body
Cable
Entries
Mechanical
Travel Stop
Base
Top Cover
Window & Indicator
Lever
Hand Wheel
Base
Cable
Entries
Mechanical
Travel Stop
Gear Box
Top Cover
Limit Switch
Assembly
Capacitor
Motor
Terminal Block
& Heater
Torque Switch
Assembly

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WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
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Manual Operation Handwheel
Actuators are provided with a declutchable manual
override system to allow operation without electrical
power. To operate manually, pull the lever towards the
handwheel to engage the manual override. If the lever
does not remain engaged, pull the lever while turning the
handwheel.
Actuator rotation direction is cast on the handwheel.
Rotating handwheel in the identified direction will rotate
the actuator output as follows.
Close = Clockwise
Open = Counter-clockwise
The manual override will automatically disengage when
electric power is applied, and motor begins to rotate.
CAUTION:
o Do not use excessive amount of pull force
when turning the handwheel.
o Do not pull or force the lever to disengage the
manual override. Only use an electrical
control signal to disengage the manual
override lever. Forcing the lever to disengage
can damage the internal lever shear pins.
Space Heater
Condensation may form in the actuator due to change in
ambient temperature. Powering the internal space
heater will help prevent this. Standard heaters are
ceramic with thermostat to prevent over heating above
140°F (60°C).
Actuator Size
Voltage
Heater
-690
110VAC
220VAC
24VDC
12VDC
5W, 4.5kΩ
5W, 18kΩ
5W, 200Ω
5W, 47Ω
-1350 to -25900
110VAC
220VAC
24VDC
12VDC
10W, 2kΩ
10W, 8kΩ
10W, 100Ω
10W, 27Ω
5. Installation
Pre-Installation
Check actuator nameplate to ensure correct model,
torque output, operating speed, voltage and enclosure
type before installation or use. It is important to verify the
torque output of the actuator is appropriate for the torque
requirements of the valve and that the duty cycle of the
actuator is appropriate for the intended application.
WARNING:
o The actuator generates a large mechanical
force during normal operation.
o Installation, commissioning, maintenance
and repairs must only be performed by
qualified personnel with extensive
knowledge on working with electrical
equipment according to enclosure ratings.
o Any modification to actuators is prohibited
as it may change enclosure ratings.
Tools
 Metric Hex Wrench Set
 Metric Combination Wrench Set
 Flat-Head Screwdriver (1/8” or 3mm)
 Wire Stripper
 Multimeter

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WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
8 12/17/19
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Actuator Mounting
 Mounting actuator is easiest with valve shaft pointing
vertically upwards, but mounting is possible in any
other position.
 Actuator should be mounted to ensure sufficient
room to easily remove housing cover and access
internal components for wiring and repair.
 Actuators are supplied with female drive output.
Output drive bushing is removable for ease of
machining or replacing.
 Standard ISO 5211 bolt patterns are provided on
mounting base. Actuator must be firmly secured to a
sturdy mounting bracket or directly to the valve’s ISO
mounting pad. High tensile bolts or studs with spring
locking washers must be used. To avoid backlash,
there should be no flexibility in the mounting.
 Valve output shaft must be in line with actuator
output drive to avoid side-loading the shaft. Operate
with handwheel before fully tightening mounting
hardware to ensure correct alignment.
 Ensure both valve and actuator are in the same
open or closed position before mounting.
CAUTION:
Prior to mounting, the actuator must be
checked for any damage. Damaged parts must
be replaced by original spare parts only.
5.3.1. Mounting Base Details (ISO 5211)
Size -690
Size -1350, -1700
Size -2640, -4400, -5200
Size -6900, -10500
Size -17500, -25900
4 - M8 x 1.25,
Dp 0.47”
P.C.D Ø2.76”
(ISO 5211 F07)
4 - M8 x 1.25,
Dp 0.47”
P.C.D Ø2.76”
(ISO 5211 F07)
4 - M10 x 1.5,
Dp 0.59”
P.C.D Ø4.02”
(ISO 5211 F10)
4 - M12 x 1.75,
Dp 0.71”
P.C.D Ø4.92”
(ISO 5211 F12)
4 - M10 x 1.5,
Dp 0.59”
P.C.D Ø4.02”
(ISO 5211 F10)
4 - M12 x 1.75,
Dp 0.71”
P.C.D Ø4.92”
(ISO 5211 F12)
4 - M16 x 2.0,
Dp 0.94”
P.C.D Ø5.51”
(ISO 5211 F14)
4 - M20 x 2.5,
Dp 1.18”
P.C.D Ø6.50"
(ISO 5211 F16)


WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
9 12/17/19
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5.3.2. Drive Bushing
Standard drive bushings are ISO 5211 star. Verify
actuator drive bushing matches valve or actuator device
stem before mounting.
Actuator
Size
Std.
Drive
Size
-690 17mm
-1350, 1700 19mm
-2640, 4400, 5200 27mm
-6900, 10500 36mm
-17500, 25900 36mm
Housing Cover
WARNING:
Flamepath surfaces on XE and XC actuators
must not be damaged in any way. DO NOT
FORCE
cover onto actuator body.
Actuator housing covers are attached with bolts in each
corner. Unscrew bolts to remove cover.
Actuator
Size
Bolt Hex
Size
-690 6mm
-1350, 1700 8mm
-2640, 4400, 5200 10mm
-6900, 10500 10mm
-17500, 25900 10mm
Limit Switch Setting
WARNING:
Hazardous voltage. Turn off all power and lock
out service panel before installing or modifying
any electrical wiring. Use caution when
energizing inputs.
CAUTION:
Setting limit switches incorrectly may result in
actuator stopping by the mechanical stops.
This may overheat the motor and force it into
thermal overload. Electrical operation will not
be possible until overload resets. The motor
may eventually fail if repeatedly overheated.
The motor control limit switches and auxiliary switches
have independently adjustable cams.
Switch order from top to bottom of the stack:
CLS = Close motor control
ACLS = Auxiliary close
OLS = Open motor control
AOLS = Auxiliary open.
CLS CAM
(Close Limit
Switch Cam)
OLS CAM
(Open Limit
Switch Cam)


WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
10 12/17/19
www.atcontrols.com IOM8011 REVISION 01
To set Close (CW) position, rotate the actuator to the
closed position with the manual handwheel. Loosen
CLS cam and rotate clockwise until switch trips.
Retighten cam.
To set Open (CCW) position, rotate the actuator to the
open position with the manual handwheel. Loosen OLS
cam and rotate counterclockwise until switch trips.
Retighten cam.
Verify limit switch setting by operating the actuator to
each position, making sure the limit switches cams press
in the limit switch lever.
Torque Switch Setting
Torque switches are installed to prevent damaging the
valve and actuator under overload conditions. When the
actuator is under overload, an integrated torque spring
mechanism trips the torque switches to stop the actuator
immediately.
CAUTION:
o Torque switch cams and spring
mechanism are set by the factory based
on the rated actuator output torque and
should not be adjusted by the user.
Adjustment can cause damage to the
motor and gearing and will void the
warranty.
o Size -690 actuators do not contain
torque switches.
Mechanical Travel Stop Adjustment
Loosen jam nuts for both the clockwise and
counterclockwise travel stop bolts.
To set the close mechanical stop bolt, operate the
actuator clockwise to the Close (CW) position until the
CLS limit switch trips. Tighten the close travel stop bolt
until it stops on the secondary worm wheel gear, then
loosen the stop bolt back out by 3 turns. Retighten the
jam nut.
To set the open mechanical stop bolt, operate the
actuator counterclockwise to the Open (CCW) position
until the OLS limit switch trips. Tighten the open travel
stop bolt until it stops on the secondary worm wheel
gear, then loosen the stop bolt back out by 3 turns.
Retighten the jam nut.
CAUTION:
If the actuator stops by the mechanical travel
stops instead of the limit switches, the motor
may overheat and go into thermal overload.
Electrical operation will not be possible until
overload resets. Motor failure may occur if
repeatedly overheated.
Control Options
There are many control options available. Please refer to
specific control option manual or wiring diagram for
details on each specific option.
6. Wiring and Operation
WARNING:
o Hazardous voltage. Turn off all power and
lock out service panel before installing or
modifying any electrical wiring. Use caution
when energizing inputs.
o All work on the electrical system of
equipment must be performed by qualified
personnel under strict observation of all
applicable codes, standards and safety
regulations.
o The actuator generates a large mechanical
force during normal operation.
Travel stop
Bolt for Close
Travel stop
Bolt for Close


WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
11 12/17/19
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Wiring
 Remove actuator cover and ensure power supply
voltage matches the nameplate or label, and that
power supply is capable of providing the stated full
load current.
 Two conduit entries are provided on each actuator;
one for power and the other for control signal.
 A minimum of 18AWG wiring is recommended for all
field wiring.
 Wiring diagram showing terminations is provided in
each actuator.
 The actuator should be wired and grounded in
accordance with local and national electrical codes.
 Conduit should be sealed at the actuator housing to
prevent water or moisture from entering the actuator
through the conduit openings.
 The compartment heater should be continuously
energized to reduce accumulation of moisture
withing actuator housing.
 Unused conduit entries must be closed off with plug
fitting approved for use per actuator enclosure
ratings.
CAUTION:
Each actuator must have its own independent
control contact. Actuators wired in parallel will
not operate properly and doing so may cause
damage to the actuator.
 Terminals in -690 actuator accept maximum wire
size of 16AWG. Terminals in -1350 thru -25900 size
actuators accept maximum wire size of 14AWG.
 Press in spring clamp with small flat head
screwdriver to open terminal for wiring.
Grounding
Internal and external ground connections are provided.
Internal Ground
Terminal Block #1
External Ground
Operation
6.3.1. General
Manually operate the actuator to the 50% open position.
Electrically operate the actuator to the fully Open (CCW)
position. The motor should rotate actuator
counterclockwise and then de-energize when the OLS
cam trips the open position limit switch.
Electrically operate the actuator to the fully Close (CW)
position. The motor should rotate the actuator clockwise
and then de-energize when the CLS cam trips the close
position limit switch.
Press


WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
12 12/17/19
www.atcontrols.com IOM8011 REVISION 01
CAUTION:
o Do not immediately reverse the motor
direction. A one second delay before
reversing motor direction is recommended.
o Do not energize both actuator inputs
simultaneously.
o If the actuator stops by the mechanical travel
stops instead of the limit switches, the motor
may overheat and go into thermal overload.
Electrical operation will not be possible until
overload resets. The motor may eventually
fail if repeatedly overheated.
6.3.2. 3 Phase and DC Voltage Actuators
A 3-phase actuator without a control module, or DC
voltage actuator without reversing control card will
require the operator to check the phase and polarity
connection prior to operation. Manually operate the
actuator to the 50% open position then apply power to
the actuator motor connections. This will rotate motor in
one direction. To reverse the direction, exchange wire 1
with wires 2 or 3 on the 3-phase voltage actuator, or
swap wires wires on DC voltage actuator.
CAUTION:
o Energizing the motor directly risks the
actuator driving into the mechanical stops.
Verify limit switch and mechanical stop
adjustment before checking direction and
make sure to disconnect power to motor
before limit switches are activated to avoid
stalling the motor.
o Command inputs to controller used to
reverse direction should be wired through
travel limit switches.
6.3.3. Jamming
If the actuator travels into a mechanical travel stop, the
worm gear will jam. Remove power from the command
input. Briefly apply power in the reverse direction to
release the pressure from the worm gear. The limit
switches and mechanical travel stops should be
readjusted per the instructions if jamming occurs.
7. Maintenance
WARNING:
o Hazardous voltage. Turn off all power and
lock out service panel before performing
maintenance on the actuator.
o Potentially high-pressure vessel. Before
removing or disassembling the actuator,
ensure that the valve or other actuator
device is isolated and not under pressure.
o Any issue detected that may affect the safe
operation of the actuator must have
immediate action taken to repair.
Under normal conditions, maintenance should be carried
out at six-month intervals. More frequent maintenance is
advised if operating in more severe conditions.
 Ensure the actuator is properly aligned with the
valve or other actuated device.
 Ensure all wiring is undamaged and insulated,
connected and terminated properly.
 Ensure all screws are present and tight.
 Ensure internal electrical components and devices
are clean and free from dust or debris.
 Ensure cable and conduit connections are properly
installed and dry.
 Check inside of housing for any signs of
condensation or moisture.
 Check power to the internal heater.
 Check enclosure o-rings.
 Verify manual override functions properly.
 Visually inspect the open/close cycle.
 Inspect the identification labels for wear and replace
if necessary.
 Check for damage to enclosure.
CAUTION:
Use only original factory parts for repairs and
replacement.

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WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
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8. Troubleshooting
Problem
Cause
Solution
Actuator does not
respond or operate
No power to actuator Turn on power
Low voltage to actuator Check power supply and wire gauge
Motor and supplied voltage are different Check nameplate voltage
Wiring is loose Check connection to terminals
Wiring is incorrect Wire according to supplied diagram
Limit switch or torque switch is tripped Manually operate to mid position
Worm gear is jammed Refer to section on jamming
Torque switch tripped
Mechanical travel stop set prior to position limit switch Reset travel stops
Foreign object between valve seat and ball/disc Clear objects
Actuator is undersized Check torques
Unable to manually
operate with
handwheel
Lever is not fully engaged Turn handle slowly while pulling lever
Worm gear is jammed Refer to section on jamming
Power is still on Turn off power
Actuator performance
is erratic
Motor is overheating and in thermal overload Check duty cycle – tune control loop
Motor is overheating and in thermal overload Check ambient temperature
A-T Controls product, when properly selected, is designed to perform its intended function safely during its useful life. However, the purchaser or user of
A-T Controls products should be aware that A-T Controls products might be used in numerous applications under a wide variety of industrial service
conditions. Although A-T Controls can provide general guidelines, it cannot provide specific data and warnings for all possible applications. The purchaser
/ user must therefore assume the ultimate responsibility for the proper sizing and selection, installation, operation, and maintenance of A-T Controls
products. The user should read and understand the installation operation maintenance (IOM) instructions included with the product and train its employees
and contractors in the safe use of A-T Controls products in connection with the specific application.
While the information and specifications contained in this literature are believed to be accurate, they are supplied for informative purposes only. Because
A-T Controls is continually improving and upgrading its product design, the specifications, dimensions and information contained in this literature are
subject to change without notice. Should any question arise concerning these specifications, the purchaser/user should contact A-T Controls.
For product specifications go to http://download.a-tcontrols.com/
A-T Controls, Inc. • 9955 International Boulevard, Cincinnati, OH 45246 • Phone: [phone] • Fax: [phone] • www.atcontrols.com