Maintenance; General; Disassembly; Inspection & Repair - Hoffer Flow Controls MF SERIES User Manual

4 Maintenance

4.1

General

Preventive maintenance for the MF Series mini-flowmeter
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 Mini-Flowmeter securely using a vise.
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
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.
a large-blade
Maintenance
screwdriver, turn
13
Meter
the plug
HP-210