Seametrics IP80 Series Instructions page 3

Maintenance and Repair
Rotor Replacement. Rotors are easily field-replaced.
Shaft and rotor are a single unit, and are not replaced
separately. 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.25901. 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.
Problem
No signal after installation
Inaccurate metering
Troubleshooting Guide
Probable Cause
Insufficient flow
Bad connections to control
electronics
Incompatible control
Damaged or missing rotor
Not enough straight pipe between
meter and flow disturbance
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 the
strain relief, then threading out the sensor retainer plug.
Remove the entire sensor capsule by pulling on the cable.
The new sensor capsule can then be installed. It is impor-
tant to orient the sensor capsule properly. Replace the re-
tainer plug, and then replace and tighten the strain relief.
To Check
See Min. GPM for size
Check connections at control.
Check polarity: red (+), black (-),
white (signal)
Does control: 1) provide 6-24VDC
power; 2) accept current sinking
inputs
Remove meter and check visually
for free spinning
See recommendations, measure
To Repair
Contact SeaMetrics
Re-connect if necessary
Contact SeaMetrics
Obtain new rotor and replace
Move meter away from flow
disturbance or field calibrate
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