Graco G250HR User Manual

Before servicing this equipment always make sure to 
relieve the pressure.

The sensor is not a serviceable part. Replace it if it is 
malfunctioning.

No flow volume displayed at monitor-
ing unit.

Flow volume is too low to measure.

Increase flow volume.

Fluid is not flowing.

Repair.

Damaged cable.

Replace cable.

Improper input voltage to sensor.

Make sure input voltage is 10-30 Vdc.

Damaged sensor.

Replace sensor if it is malfunctioning.

Fluid is not flowing.

Clogs in fluid line or in meter.

Clean fluid line and/or meter; see 
Maintenance on page 9.

Gears worn or damaged.

Repair meter; see Maintenance on 
page 9.