5.4 Operating Temperature Limits
V-Series actuators are designed to operate in ambient
environments between -40˚F (-40˚C) and 150˚F (65˚C). In
outdoor applications where ambient temperatures exceed
80˚F, actuators should be shielded from direct sunlight.
In applications with high media temperatures, insulating
blankets, heat shields and/or extended mounting shafts
should be used to maintain ambient temperatures at the
actuator within normal operating limits.
Heaters and thermostats are recommended for all outdoor
applications and may also be used to dry condensation in
high humidity environments.
5.5 Actuator Mounting
The actuator may be mounted in any position including
upside-down. It must be rmly secured to a direct mount
ange or sturdy mounting bracket. A minimum of four bolts
with lock washers should be used to secure the actuator to
the bracket. Flexibility in the bracket is not allowed, and
backlash, or “play”, in the coupling should be minimized. The
actuator output shaft must be in line (centered) with the valve
shaft to avoid side-loading the shaft. See (Figure 8) for output
drive dimensions and mounting hardware specications.
WARNING
FAILURE TO USE MANUAL OVERRIDE PROPERLY COULD RESULT
IN DAMAGE TO THE ACTUATOR GEARING. ENSURE THAT THE
OVERRIDE IS FULLY DISENGAGED AND DO NOT USE EXCESSIVE
FORCE WHEN MANUALLY POSITIONING ACTUATOR. DO NOT DRIVE
THE ACTUATOR BEYOND THE TRAVEL LIMIT SETTINGS. FAILURE TO
FOLLOW THESE INSTRUCTIONS COULD RESULT IN DAMAGE TO THE
ACTUATOR AND/OR FINAL DRIVE ELEMENT.
5.6 Manual Override
To use the manual override, push the override shaft down
approximately 1/4 inch to disengage the motor from the
gear train. Failure to disengage motor prior to turning
override will cause damage to the actuator. While holding
the shaft down, turn the shaft with a wrench or handle to
the desired position. NOTE: The override shaft on actuators
below 1000 lb•in must be rotated in the opposite direction
of the desired direction of the output shaft. In actuators
1000 lb•in and above, the override and the output shaft
turn in the same direction.
Do not drive the actuator beyond the limit switch settings;
it is possible to damage installed options such as a feedback
potentiometer. The manual override shaft must be returned
to its fully upward position before the motor is re-engaged.
Rotate the shaft slightly to align the spur gears until the
shaft “springs” back to its re-engaged position. NOTE: The
rotation direction of the output may not be the same as the
rotation of the override shaft!
5.7 Lubrication
All rotating power train components are permanently
lubricated with multi-purpose Lithium grease suitable for
the operating temperature range of the actuator. Additional
lubrication is not required in normal operation.
5.8 Problem Prevention
Most actuator problems result from improper installation.
• Incorrect Wiring and Set Up Make certain the actuator
is wired correctly and travel stops are properly set
before power is applied.
• Coupling, Alignment, and Mounting Do not add extra
torque! Make certain that the mounting arrangement
is sturdy, centered, properly aligned, and that all
mounting hardware is secure and properly tightened.
• Moisture Replace the cover tightly and make certain
conduit entry holes are sealed properly to prevent
moisture inltration.
5.9 Warranty
All V-Series actuators are backed by a 2-year warranty that
covers materials and workmanship. The warranty expires
24 months from installation or 30 months from delivery;
whichever comes rst.
To request a Return Authorization for an actuator within the
warranty period, please consult your local Metso distributor.
5.10 Repair Service/Spare Parts
We recommend that electric actuators be directed to our
Northeast Service Center for maintenance. The Service
Center is equipped to provide rapid turn-around at
reasonable cost and oer new product warranty with all
reconditioned electric actuators.
For electric actuators outside of the warranty period,
request a Return Authorization by calling the Northeast
Service Center at (508) 595-5195; or by sending an e-mail to
valvconservice@metso.com.
NOTE: When sending electric actuators to the Service
Center for repair, do not disassemble them! The actuator
should be relatively clean upon return. For further
information on spare parts and service or assistance, visit
our Web site at www.metso.com/electricactuators.
NOTE: When ordering spare parts, always include the
following information:
a. Actuator model number from the product nameplate.
b. Serial number from the product nameplate.
c. Part number and/or description of the part required.
d. Required quantity.
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