Dynasonics DDFXD Doppler Ultrasonic Flow Meter User Manual
Page 22
22
06-DPP-UM-00147 02/12
CAUTION: Do not run the drive nuts off the rods until the isolation valve is fully closed.
2) After the probe is retracted past the “ball” in the isolation valve, the isolation valve may be closed
to isolate the probe from the line and the probe can be removed entirely.
CAUTION: If the insertion probe is not above the “ball” of the isolation valve, the valve can-
not be closed. If the valve will not close smoothly, the body or tip of the probe is most likely
not above the “ball”. Attempting to force the valve into the closed position may result in dam-
age to the probe.