UniTorq UTQ 1.5 – 6.4 Quarter-Turn Actuator
Installation and Operation Manual
Thank you for purchasing our UTQ 1.5-6.0 Electric Actuators
Before installation or operation of the actuator carefully review this manual to gain a thorough
understanding of all installation, operation, and maintenance procedures.
The contents of this manual are subject to change due to continuous quality improvement
processes.
Table of Contents
DESCRIPTION ................................................................................................................................................. 3
GENERAL TECHNICAL INFORMATION ............................................................................................................ 3
TEMPERATURE LIMITS ................................................................................................................................... 3
MOUNTING THE ACTUATOR .......................................................................................................................... 3
MANUAL OVERRIDE ...................................................................................................................................... 4
WIRING .......................................................................................................................................................... 4
WIRING DIAGRAM......................................................................................................................................... 5
ADJUSTMENT OF THE LIMIT SWITCHES ........................................................................................................ 6
Adjust the OPEN limit switch cam: ........................................................................................................... 6
Adjust the CLOSED limit switch cam: ............................................................................................................ 6
PARTS ASSEMBLY .......................................................................................................................................... 7
DIMENSIONS ................................................................................................................................................. 8
OPTIONAL HEATER INSTALLATION................................................................................................................ 9
LIMITED WARRANTY AND LIABILITY ........................................................................................................... 12
UniTorq Actuators and Controls Tel: 770-446-7074
www.unitorq.com
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This manual contains important installation and operation instructions for the UniTorq UTQ-1.5, UTQ-3.0,
and UTQ-6.0 Electric Actuators. Please read these instructions thoroughly before installation. Keep this
manual in a convenient location for easy reference.
DESCRIPTION
UniTorq’s UTQ-1.5-6.0 Electric Actuators are manufactured to provide dependable and
efficient operation of quarter turn valves. The actuation torque is 150, 300, and 600 in/lbs.
UTQ-1.5 to 6.0 series actuators are available in 25% duty cycle AC models and 100% duty cycle
DC models.
The UniTorq actuator comes standard with a motor brake and can be used on butterfly
valves with no concern of back-drive.
GENERAL TECHNICAL INFORMATION
The split phase motor used in the UTQ-1.5-6.0 AC voltage actuators internally steps up the
applied 115v AC voltage and feeds it back to the off terminal. For example, when 115v AC
power is applied at terminals 1 and 4, 230 volts will be fed back to terminal 3. This can create
a problem for controllers with solid state outputs rated for less than 230 v AC. It is
recommended that relay outputs be used in these situations. Additionally, multiple actuators
cannot be wired in parallel due to this feedback, instead individual leads (isolated contacts)
must be run to each actuator.
Please refer to the UniTorq literature regarding sizing information.
TEMPERATURE LIMITS
Temperature Restrictions: UniTorq recommends the use of the optional heater and
thermostat (Option –H) for applications below 30°F. With the –H option do not use in
applications below –40°F. Do not use in ambient applications over 160°F.
High Ambient Temperatures: The maximum recommended ambient temperature is 160°F.
MOUNTING THE ACTUATOR
First confirm that the actuator output torque is suitable for the valve torque requirements and that the
actuator duty cycle is appropriate for the intended application.
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Actuator Drive Output Requirements: The UTQ-1.5-6.0 is designed with a female drive output with a 0.551” square. Three industry standard bolt hole circle configurations are also
provided for mounting with an F03, F05, and F07.
MANUAL OVERRIDE
To manually operate the actuator, push the override shaft down approximately 1/4” then
apply a wrench to the flats of the shaft and rotate the actuator. The coupling must be
designed to provide clearances necessary for manual operation. The valve’s position can be
determined by visually inspecting the position of the override shaft.
WIRING
Note: Follow local wiring codes and ordinances when applicable.
Voltage and current requirements are found on the actuator identification label. Standard
power control wiring configurations for AC and DC actuators are shown in the wiring
diagram. To operate the UTQ-1.5-6.0 Electric Actuator power must be applied to the
actuator’s motor through two limit switches. The actuator’s mechanical travel limits are
controlled by the limit switches that are factory set to 90 degrees.
VAC—To drive the actuator counterclockwise (CCW) power terminals 1 and 3. To drive the
actuator clockwise (CW) power terminals 1 and 4. The actuator can be driven fully open
(CCW) to closed (CW) by maintaining power to the motor until the actuator trips the internal
limit switches. To position the actuator disconnect the power at any point during the
actuator’s travel.
VDC—DC voltage actuators require reversing the power polarity. To drive the actuator CW
apply power so that terminal 1 is negative and terminal 4 is positive. To drive the actuator
CCW apply power so that terminal 1 is positive and terminal 3 is negative.
Note: UTQ-1.5-6.0 Electric Actuators have a 25% duty cycle. This means for each actuator
operating cycle (ON to open or close the valve) the actuator must be OFF for a time equal to
three times the operating cycle.
For example, if the operating cycle time is 5 seconds then
for each operating cycle it must be OFF for 15 seconds (5 seconds operating cycle X 3 = 15
seconds). Exceeding the actuator’s duty cycle may cause the thermal overload switch to
temporarily shut off power to the motor.
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WIRING DIAGRAM
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ADJUSTMENT OF THE LIMIT SWITCHES
To change the open or closed positions see the following:
The internal cams are factory set to operate within the output stroking from a –45° orientation.
This will indicate a 0° to 90° orientation on top. Note that they are shipped in the closed
position. If the output drive is mounted to operate square (0° to 90°) then the cams will need to
be adjusted. This will now indicate at –45° to 45° from above. In this case it is desirable to
replace the open and close indicate stickers on the cover to the appropriate positions (new
stickers provided).
Note: This actuator can operate in any position throughout the 360° range. The top shaft
indication is 45° from the bottom output shaft.
Adjust the OPEN limit switch cam:
1. Loosen the set screw on the OPEN limit switch cam (2nd from the bottom) using a hex
wrench
2. Apply power to terminals 1 and 3 to drive the actuator counterclockwise to the open
position
3. Remove power from the actuator.
4. Rotate the cam toward the limit switch arm until the switch barely clicks closed. Set the
vertical arm position so the bottom of the cam contacts the limit switch arm. Tighten
the cam set screw. Do not over tighten (use less than 8 in/lbs of torque). Set the cam
“high” as described here or it will disengage from the limit switch arm during manual
override.
Adjust the CLOSED limit switch cam:
1.
2.
3.
4.
5.
Loosen the set screw on the CLOSED limit switch cam (bottom) using a hex wrench.
Apply power to terminals 1 and 4 to drive the actuator clockwise to the closed position.
Remove power from the actuator.
Rotate the cam toward the limit switch arm until the switch barely clicks closed/
Set the vertical arm position so the bottom of the cam contacts the limit switch arm.
Tighten the cam set screw. Do not over tighten (use less than 8 in/lbs of torque). Set the
cam “high” as described here or it will disengage from the limit switch arm during
manual override.
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PARTS ASSEMBLY
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DIMENSIONS
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OPTIONAL HEATER INSTALLATION
1.
Remove Actuator Cover
2. Install Heater/Thermostat Element
1.
Slip the heater block over the two cast posts protruding from the motor support plate surface,
make sure that the heater block is flush with the motor support plate surface. See Figure 1.
2.
Once the heater block is in place stake the two cast posts with a sharp tool such as a prick
punch or centering punch to lock the heater block in place. (Please be careful not to use
excessive force as you will dam- age the base plate, and possibly the moving parts below.)
3.
Route the lead from the heater block to the bottom of terminal position one (1) or terminal
position seven (7) if DC Powered LCR.
4.
Route the lead from thermostat to the bottom of terminal position two (2) or terminal
position eight (8) if DC Powered LCR.
5.
Using the supplied wire ties, secure the thermostat and heater element wires to keep them
clear of any moving parts.
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3. AC Wiring (Figures 2 & 3)
1.
2.
3.
Wire AC NEUTRAL/L 1 to terminal1.
Wire AC HOT/L2 to terminal2.
With power applied as outlined above the thermostat will cycle the heater on and off
as needed to maintain temperature.
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4a. DC Wiring LCD (Figure 4)
1.
2.
3.
Wire DC NEGATIVE to terminal1.
Wire DC POSITIVE to terminal 2.
With power applied as outlined above the thermostat will cycle the heater on and off
as needed to maintain temperature.
4b. Dc Wiring LCR (Figure 5)
1. Wire DC NEGATIVE to terminal 7.
2. Wire DC POSITIVE to terminal 8.
3. With optional power applied as outlined above the thermostat will cycle the heater on and
off as needed to maintain temperature.
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Available options include extra limit switches, thermostats and heaters. 0-10v DC, 4-20mA
modulation and external battery backup. Consult your local UniTorq representative for further
information.
LIMITED WARRANTY AND LIABILITY
UniTorq Actuators and Controls, Inc. hereby warrants its products to be free from defects in material and
workmanship for a period of two (2) years from the date of original shipment. This warranty extends to the original
buyer only. UniTorq Actuators and Controls, Inc.’s sole obligation under this warranty and the Buyer’s EXCLUSIVE
REMEDY is limited to the repair or replacement without, charge, FOB shipping point, of such products or parts of
products only (specifically excluding any labor or installation thereof) which UniTorq Actuators and Controls, Inc.,
after inspection determines to be defective provided that UniTorq Actuators and Controls, Inc.. is notified
immediately upon the discovery of any claimed defect and that the defective product is returned, freight prepaid,
to UniTorq Actuators and Controls, Inc. FOB shipping point at its request. It is expressly provided that UniTorq
Actuators and Controls, Inc., will not be subject to any or other future liability NOR BE LIABLE FOR ANY DAMAGE
TO EQUIPMENT OR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES resulting from any breach of warranty or from
any defects in its products and Buyer shall indemnify and protect UniTorq Actuators and Controls, Inc. against all
claims of loss or damage other than the cost of repair or replacement of its products or parts of product only, as
above mentioned. Without detracting from any other limitations or exclusions, but in addition thereto, it is agreed
that elements of parts not manufactured by UniTorq Actuators and Controls, Inc. carry only the warranty of the
original manufacturer and UniTorq Actuators and Controls, Inc. assumes no additional warranty.
THERE ARE NO EXPRESS OR IMPLIED WARRANTIES BY UNITORQ ACTUATORS AND CONTROLS, INC. OTHER THAN
THOSE SPECIFICALLY SET OUT ABOVE UNDER “LIMITED WARRANTY AND LIABILITY”. ALL ITEMS SOLD ARE
PURCHASED BY THE BUYER “AS IS” AND THERE ARE NO IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE IN CONNECTION WITH ANY SALE. In consideration of the above warranty, Buyer
waives and releases UniTorq Actuators and Controls, Inc. from all claims and causes of action, (other than those
arising under the warranty) which Buyer may at any time hereafter have against UniTorq Actuators and Controls,
Inc. arising out of or in any way pertaining to the purchase or use of its products, whether such claims or causes of
action result from the negligence of UniTorq Actuators and Controls, Inc., its agents or employees, or otherwise.
Adequate engineering and quality control must be performed by Buyer to assure that the product purchased is
suitable for its application. UniTorq Actuators and Controls, Inc. shall not be responsible for handling, modification
by Buyer, design, assembly, or end use of Buyer’s product.
No statement, remark, agreement, representation, promise of understanding, oral or written, made by UniTorq
Actuators and Controls, Inc. or its agent, representative or employee, which is not contained herein will be
recognized or enforceable or binding upon UniTorq Actuators and Controls, Inc. BUYER AGREES THERE ARE NO
UNDERSTANDINGS OR UNDERTAKINGS OF ANY KIND WITH RESPECT TO THE PRODUCTS OR ANY PART THEREOF
NOT EXPRESSLY SET FORTH AND CONTAINED HEREIN. If any provision of “limited warranty and liability” is held to
be illegal or unenforceable by any court or competent jurisdiction, the remaining provisions shall remain effective.
Any action for breach of this “LIMITED WARRANTY AND LIABILITY” must be commenced within one (1) year after
the cause of action occurs.
For further information, contact UniTorq or your local representative.
2150 Boggs Road, Suite 410 • Duluth, GA 30096 • TEL: 770.446.7074 • FAX: 770.447.1825
email: [email protected]
UniTorq Actuators and Controls Tel: 770-446-7074
www.unitorq.com
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