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Operation
308778L 7
Operation
Pressure Relief Procedure
1. Shut off the fluid supply to the meter.
2. Shut off all electrical power to the fluid system.
3. Follow the Pressure Relief Procedure for your fluid
system dispensing device.
Flow Meter Function
This is a positive displacement, gear flow meter. The
gear flow meter is highly accurate, even with low flow
rates. The fluid flowing through the meter rotates the
gears. The gear tooth is picked up by a sensor device,
which produces an impulse for every gear tooth passing
by.
Recommended Usage
• See the Technical Data for fluid and ambient tem-
perature limits.
• Only use the flow meter with fluids that are compati-
ble with the “Wetted Parts” listed in the Technical
Data.
Flow Volume Range
The G3000 and G250 meters flow volume range is
0.02-1.0 gal./min. (75-3800 cc/min.).
The G3000HR and G250HR meters flow volume range
is 0.01-0.5 gal./min. (38-1900 cc/min.).
Checking the Meter Accuracy
1. To check the accuracy of the meter, turn your gun
fan and atomizing air off, then trigger the fluid into a
graduated cylinder; dispense at least 500 cc of fluid.
2. Measure the volume of fluid in the beaker in
cubic-centimeters (cc) and read the volume on the
flow meter monitor.
G3000 and G250: If the flow meter scale factor is
not between 0.112-0.140 cc/pulse, follow the clean-
ing procedure on page 10, then recalibrate the flow
meter.
G3000HR and G250HR: If the flow meter scale fac-
tor is not between 0.05-0.07 cc/pulse, follow the
cleaning procedure on page 10, then recalibrate the
flow meter.
Do not exceed the maximum working pressure of your
meter or any component or accessory in your system.
NOTICE
The flow meter gears and bearings can be damaged
if they rotate at too high a speed. To avoid high speed
rotation, open the fluid valve gradually. Do not
over-speed the meter with air or solvent. To prolong
meter life, do not exceed the meter’s maximum flow
rate.