PROBLEM

PROBABLE CAUSE & SOLUTION

Leakage from the cover gasket

Gasket has been damaged due to shock pressure or cover bolts have not been tightened sufficiently. Replace gasket and tighten cover bolts correctly.

Product flows through meter but the register does not operate

Follow this procedure:

1.Check packing gland, and gear train.

2.If all meter parts are moving then problem is in register. Faulty register should be checked and repaired by trained mechanic.

3.Remove register from meter. If all meter parts are moving but output shaft of adjuster assembly is not, adjuster is worn and must be replaced.

4.If totalizer numerals (small numbers) on register are recording, but the big numerals are not moving, register needs repair.

5.Packing gland gear not turning. Replace the packing gland. This may be caused by starting the flow too rapidly.

 
NOTE: For M-60® and M-80® meters, the drive blade may be sheared.

Breaking teeth on timing gears

This may result from the following:

•Starting or stopping flow in meter too rapidly.

•Pump bypass not adjusted properly

Product flows through meter but register does not record correctly

This may result from the following:

•Adjuster not properly calibrated.

•Incorrect gear plate or gear ratio has been installed.

•Air is in the system.

No flow through meter

This may result from the following:

•Faulty non-functioning pump.

•Valve not open or not functioning.

•Meter “frozen” due to build-up of chemical “salts” or foreign material inside metering chamber. Clean the meter and inspect for damage.

Meter runs too slowly

This may result from the following:

•Valve internal mechanism faulty. Valve does not open fully.

•Meter gears or rotors partially “salted” enough to slow up rotation of parts. Clean the meter.

•Downstream restriction.

•Clogged strainer basket.