Maintenance and repair, Spare parts list – Seametrics TX80 Series User Manual
Page 3
Maintenance and Repair
Rotor Replacement. It is unusual for a rotor to require
replacement due to damage sustained in normal
service. More commonly, the meter is dropped while it
is out of the pipe. Another reason for rotor replacement
is shaft wear after long service. Rotors are easily field-
replaced. Shaft and rotor are not a single unit, if they
are using Kynar/ceramic. If replacement is due only to
normal shaft wear, bearing replacement is probably
not necessary. If the rotor has been damaged by
impact, the bearings should also be replaced. Rotor
and bearings can be ordered as a kit, Part No.25930.
To install a rotor, follow these steps:
1. Unscrew the threaded bearing housings to expose
the shaft ends. If bearings are being replaced, back
them completely out.
2. Remove the rotor. Put the new rotor in its place.
3. Thread in one bearing housing part way, then the
other. Take care to start the end of the shaft into the
bearing hole before tightening further.
4. Screw in bearing housings until they bottom. Note:
Do not use excessive force.
5. Check for free spin. Blowing lightly on the rotor
should result in it spinning rapidly and coasting to a
smooth stop.
Sensor Replacement. It is very unusual for a sensor
to require replacement in normal use. The primary cause
of sensor failure is overvoltage (inadvertent connection
of line voltage, for example) or incorrect polarity on
hookup. The sensor is replaced by removing the strain
relief, then threading out the sensor retainer plug. Re-
move the entire sensor capsule by pulling on the cable.
The new sensor capsule can then be installed. It is
important to orient the sensor capsule properly. Re-
place the retainer plug, and then replace and tighten
the strain relief.
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Part No.
Description
25930
Rotor repair kit(tungsten carbide)
25945
Rotor repair kit (ceramic)
25946
Rotor & shaft assy. (tungsten
carbide)
25947
Rotor & shaft assy. (ceramic)
11015
Sensor assy.
16439
O-Ring, Viton
16455
O-Ring, Viton
25081
O-Ring, EPDM
Spare Parts List
KYNAR is a registered trademark of Elf Atochem North America Inc.