P/N: 975389
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Rev: current
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ECO: xxxxx
www.dynisco.com
From lab to production,
providing a window into the process
-46-
9
Service
9.1
Changing RSU burst plug
•
Confirm the ViscoIndicator is not at pressure and the PIV is closed
•
Bring system to process temperature
•
Use a 5/8 “ wrench to unthread the burst plug from the top cover of the RSU, being
careful not to damage the delicate sensor tip during removal
•
Apply anti-seize to the new burst plug threads and reverse previous steps and
install burst plug to 25 ft-lbs (42 ft-lbs max).
9.2
Changing Pressure Transmitter
•
Confirm the ViscoIndicator is not at pressure and the PIV is closed
•
Bring system to process temperature
•
Remove the 6 screws holding on the right cover of the RSU (see section 8.1)
•
Disconnect the electrical plug attached to the PT
•
Use a 5/8 “ wrench to unthread the PT from the flowblock flange, being careful not
to damage the delicate sensor tip during removal
•
Carefully angle the PT and remove the PT from the enclosure
•
Apply anti-seize to the new PT threads and reverse previous steps and install PT to
25 ft-lbs (42 ft-lbs max).
9.3
Changing capillary
9.3.1
Capillary Removal
•
Confirm the ViscoIndicator is not at pressure and the PIV is closed
•
Bring the flowblock to process temperature
•
Thread the two brass rods together that are part of the capillary insertion/removal
Kit (Dynisco P/N 1012511)
•
Thread aluminum capillary tip onto brass rod assy (you now have the " capillary
tool assy")
•
Thread aluminum capillary tip of capillary tool assy into capillary retaining plate,
being careful to insert the tip first into the capillary already installed in VI head
•
Unscrew 4 screws of capillary retaining plate so they are free of the flow block, but
still captured by retaining plate
•
Pull directly downward to remove the capillary retaining plate (capillary will most
likely not come free as it is held by plastic residue inside the flow block)
•
Remove burst plug installed thru top cover of RSU
•
Unthread the capillary retaining plate from the capillary tool tip and place in a safe
location to cool
