2076 NORTHWOODS DR
MUSKEGON, MI 49442
PHONE (231) 788-7025
FAX (231) 788-7030
www.dynatorque.com
ISO 9001:2008 CERTIFIED
Page 6 of 7
IOMSRD
IOM FOR DYNATORQUE™ SPRING RETURN MANUAL OVERRIDE (SRD TYPE)
Revised: 4-15-11
Override operates, but not full travel:
1. Never use excessive force. If the operator will not operate correctly, follow these steps.
2. Make certain that all compressed air has been exhausted from the pneumatic actuator. The actuator
must be vented on both sides of all pistons.
3. Check to ensure that the stop adjustment settings for the pneumatic actuator, valve, and override will
allow the desired amount of travel.
4. Be certain that nothing is physically preventing the valve from closing/opening. That is, make sure that
nothing is lodged in the valve trim (ball, plug, disc. etc.).
5. Check that no physical damage has occurred which might limit or prevent movement of the actuator.
Examples could be: a dented actuator cylinder, damaged drive coupling or hardware.
6. Check to ensure that no drive components have been deformed. All drive components and mounting
surfaces must be correctly aligned. Check all couplings for excessive wear or looseness and all bolts
are snug.
Still problems after performing above steps:
1. Cycle test the pneumatic actuator and override as an assembly apart from and not mounted to the
valve. Assuming these components cycle fully, the problem is probably the valve. Check the valve for
any obstructions. If no obstructions are visible call the valve manufacturer for further information.
2. If the pneumatic actuator and the override assembly do not appear to function properly, make sure that
the pneumatic actuator’s spring is fully extended.
Never remove or separate the pneumatic actuator
from the override without fully extending the spring.
Separate the pneumatic actuator from the
override and cycle test separately. The problem component should be apparent at this time.
3. If the pneumatic actuator appears to be the problem, contact the manufacturer for further instructions. If
the override appears to be the problem please contact your local DYNATORQUE representative or the
factory.
Maintenance:
A. Storage:
For best results, DYNATORQUE operators should be stored in a clean, dry area in their
original factory shipping containers. If operators are stored in high humidity areas, steps should
be taken to reduce the amount of moisture the units will be exposed to. Operator input shafts are
plated or stainless steel to prevent corrosion. If operators are being stored for a long period of
time, operator mounting surfaces should be lightly greased to prevent corrosion.
B. Maintenance: DYNATORQUE manual operators do not require periodic maintenance. They are,
for most applications, lubricated for life, with all components designed to have a life equal to or
exceeding the wear life of the operator gearing.
