Liquid Controls MA4 Meter - Manual (Page 11)

11
Meter Maintenance
Examine all fasteners. Make sure fasteners are not bent,
rusted, or have pulled threads. The threads should all
appear evenly placed. If the bolts are bent, check the
housing and cover for flatness. Use a straight edge to
determine flatness.
Look for gaps. When disassembling a meter, use a feeler
gauge to check for gaps between the bearing plate and
housing. If you do find gaps, check the bearing plates for
flatness with a straight edge. Gaps can be caused by
shock problems that must be resolved. Contact your full-
service distributor or the Service Department at Liquid
Controls for assistance if this occurs.
Check the O-Rings. O-Rings should be smooth. Cracked
or worn O-Rings should be replaced. However, a more
serious problem of shock may have occurred if the O-
Rings look nibbled. Shock problems must be verified and
resolved. Contact your full-service distributor or the
Service Department at Liquid Controls for assistance if
this occurs.
Check the bearing plates. Check the bearing plates for
flatness. Use a straight edge. Warped bearing plates can
be caused by shock problems that must be resolved.
Contact your full-service distributor or the Service
Department at Liquid Controls for assistance if this
occurs.
Weights & Measures. Check with the regulatory agency
that governs Weights & Measures in your area. Removing
a seal wire may require Weights & Measures
recalibration.