6 308778
Operation
Pressure Relief Procedure
WARNING
INJECTION HAZARD
The system pressure must be manually relieved to
prevent the system from starting or spraying acci-
dentally. Fluid under high pressure can be injected
through the skin and cause serious injury. To
reduce the risk of an injury from injection, splashing
fluid, or moving parts, follow the Pressure Relief
Procedure whenever you:
are instructed to relieve the pressure,
stop spraying,
check or service any of the system equipment.
1.
Turn 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 pass-
ing by.
Recommended Usage
WARNING
COMPONENT RUPTURE HAZARD
Do not exceed the maximum working pressure of
your meter or any component or accessory in your
system.
See the Technical Data for fluid and ambient
temperature limits.
Only use the flow meter with fluids that are compat-
ible 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.).
CAUTION
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 gear with air or solvent. To prolong
meter life, Do not use the meter above its maximum
flow rate.
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
cleaning procedure on page 9, then recalibrate
the flow meter.
G3000HR and G250HR: If the flow meter scale
factor is not between 0.05–0.07 cc/pulse, follow
the cleaning procedure on page 9, then recali-
brate the flow meter.
Summary of Contents for 239716
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