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Maintenance
CAUTION
Do not immerse the meter in solvent with the electronic
sensor installed. Solvent could damage the electrical
components.
Air purge is not recommended for any gear-type flow
meter. Air purges do not provide the lubrication the
meter gears require.
Residue Build-up on the Meter
Gears
Residue build-up may cause the meter gears to bind or
stop rotating, which decreases the meter accuracy and
makes 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. Excessive resi-
due build-up usually means that you are using improper
cleaning solvents and/or cleaning sequences or pro-
cesses.
•
Check the meter routinely to develop the correct
cleaning schedule.
•
Use the proper cleaning solvent for the fluid being
metered.
Flushing the Meter
Flush the fluid supply line and meter fluid reservoir daily
with a compatible solvent as instructed below.
1. Follow the Pressure Relief Procedure, on page 7.
2. Connect the fluid line to the solvent supply unit.
3. Flush the meter until it is clean.
309834W
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 supply.
6. Turn on the fluid supply.
7. Operate until the meter and fluid line are free of sol-
vent.
CAUTION
It is not recommended that the meter be operated or
flushed with water. Should this occur, residual water
should be removed with alcohol and the internal com-
ponents of the meter should be coated with a light film
of oil. If the device is to remain inoperative for an
extended period of time, internal components of the
meter should be coated with a light film of oil.
Disassembly
Clean and service the meter at a clean
work-bench. Use only lint-free cloth on parts.
1. Follow the Pressure Relief Procedure, on page 7.
Then close the fluid shut-off valve on each side of
the meter.
2. Disassemble the sensor assembly (19) and sensor
pad (17) from the flow meter housing by removing
M4 screws (18 & 20). See page 11.
3. Loosen the six M8 screws (2) from the end housing
(1) of the flow meter.
4. Remove four of the six screws (2) from the end
housing (1) keeping the two opposite bolts engaged
by several threads.
CAUTION
To avoid damaging the shafts (4 & 8), keep the hous-
ings parallel to each other when separating them; do
not rock the housings from side to side. Do not use
chisels or screwdrivers to split and pry apart the hous-
ings.
Maintenance
9
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