Onicon FT-3500 - Page 12

FT
-
3500 ELECTROMAGNETIC FLOW METER
ONICON Incorporated 727.447.6140 Page 12 onicon.com
Removal Of The Hot Tap Thermowell
WARNING
Maintain a rm hold on the wiring enclosure until the thermowell is completely withdrawn and the valve is closed.
IMPORTANT NOTE
Rotating the thermowell as you slowly withdraw it through the valve will ensure that the lower tip is fully withdrawn
and completely free of the valve. If resistance is felt when closing the valve, open valve fully and rotate the well as
you pull it further out of the pipe.
1. System pressure will try to push the thermowell out of the ow stream when the clamping nut is released. Be sure to
establish safe footing prior to loosening the clamping nut. The force pushing out against the thermowell is the same as
the insertion force calculated above.
2. Grasp the wiring enclosure rmly, holding the thermowell in the pipe and then loosen the position clamping nut. Slowly
withdraw the thermowell from the pipe. After the thermowell is completely withdrawn, carefully close the isolation
valve.