Flowserve Logix MD+ ValveSight - Manual (Page 76)

ValveSight™ Diagnostics DTM Manual for Logix MD+ Positioner with HART®
FCD- LGENSF0014-00
© Flowserve Corporation
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Action Buttons
The Apply button will save changes to the connected device.
The Retrieve button will retrieve the latest information from the device.
Warning and Alarms
Bellows Cycles
•
Definition: The bellows cycle limit has been exceeded.
•
Implications: The bellows may be reaching the end of its fatigue
life. Each cycle represents two reversals of the direction of bellows
movement. The cycle counting criterion and count limit are set by the
user to track the usage of the valve.
•
Possible Solutions: Follow routine procedures for maintenance when
the limit is reached such as checking bellows for cracking or
leaking. After maintenance, reset the cycle accumulator.
Bellows Travel
•
Definition: The bellows cycle limit has been exceeded.
•
Implications: The bellows may be reaching the end of its fatigue
life. Each cycle represents two reversals of the direction of valve
movement. The cycle counting criterion and count limit are set by the
user to track the usage of the valve.
•
Possible Solutions: Follow routine procedures for maintenance when
the limit is reached such as checking bellows for cracking or
leaking. After maintenance, reset the cycle accumulator.