Omega FTB500 - Manual (Page 8)

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4 Maintenance
4.1 General
Preventive maintenance for the Omega FTB500 Series of Low
Flowrate Meters consists of a thorough general inspection.
Remove the meter from the service line and take to a clean work
area. Use the following procedures and exploded component
views to remove, inspect, and reinsert the flowmeter internals.
4.2 Disassembly
1. Hold the meter securely using a vise. Meter orientation
should be such that the threaded plug is facing up. Use
extreme care not to damage the meter housing or piping
connections when placing in the vise.
2. Using a large-blade screwdriver, turn the plug
counterclockwise to remove.
3. To remove the shaft assembly, carefully thread a 10-32
screw into the hole provided in insert. Thread the screw
into the insert until it bottoms out (finger tight only).
4. Turn the housing over and slowly and carefully pull the
shaft assembly and internals out of the housing. Take
care not to damage the shaft, rotor, and/or bearings.
5. Remove and discard the gasket/seal.
4.3 Inspection & Repair
1. Examine the flowmeter internals for signs of corrosion
or fouling by foreign materials.
2. Examine the shaft, rotor, and bearings for signs of wear
and/or damage.
3. If wear or damage is present, replace with new parts.
NOTE: Clean all of the internals in an approved cleaning
solution.