Graco G3000HR, G250HR, g250 Maintenance, Residue Build-up on the Meter Gears, Flushing

Maintenance

If the meter is not installed in an instrinsically safe location, make sure the power is off or the electronic sensor is disconnected before wiping the outside of the meter clean with a cloth dampened in a compati- ble solvent or flushing the meter.

NOTICE

Do not immerse the meter in solvent with the elec- tronic 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.

Maintenance

Flushing

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.

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 sol- vent.

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