Maintenance
CAUTION
Do not immerse the meter in solvent. Solvent could
damage the meter’s electrical components.
NOTE: Clean the outside of the meter with a soft cloth
dampened in a compatible solvent as needed.
Residue Build-up on the Meter Gears
Residue build-up affects the flow meter performance
by decreasing the meter accuracy and making meter
recalibration necessary. As more build-up occurs,
recalibration is required more often.
The frequency that your meter requires cleaning
depends on the type of fluid being used. Check the
meter routinely to develop a cleaning schedule.
Gear Rotation Binding
When using water-based fluids, residue build-up may
cause the meter gears to bind or stop rotating. This
usually means that improper cleaning solvents and/or
cleaning sequences or processes are being used.
Check the cleaning cycle sequence or cleaning pro-
cess. Correct them if necessary. Be sure to use the
proper cleaning solvent for the fluid being metered.
Fluid Line Air Purges
If using air purges, remember that air purges do not
provide the lubrication the meter gears require. The
metered fluid normally provides lubrication.
CAUTION
Excessively long air purges can over-speed the
flow meter gears and cause over-heating of the
gears and gear shaft. This can result in premature
gear and shaft failure.
If the gears or shafts show signs of over-heating (blu-
ish discoloration), excessive wear, or binding, check
the cycle times and the air pressures used for the air
purges. Determine and resolve the cause of the prob-
lem before installing another meter in the system.
Flushing the Meter
Flush the fluid supply line and meter fluid reservoir dai-
ly with a compatible solvent as instructed below.
1.
Follow the Pressure Relief Procedure, on
page 8.
2.
Connect the fluid line to the solvent supply unit.
3.
Flush the meter until it is clean.
4.
Follow the Pressure Relief Procedure, then dis-
connect the fluid line from the solvent supply unit.
5.
Reconnect the fluid line to the fluid
(paint) supply.
6.
Turn on the fluid supply.
7.
Operate until the meter and fluid line are free of
solvent.
Maintenance continued on next page.
