Operation
WARNING
Pressure Relief Procedure
To reduce the risk of serious injury, including
splashing in the eyes or on the skin, or injury from
moving parts, fire, explosion, or electric shock,
always follow this procedure when shutting off the
system, when checking or servicing any part of the
spray system, and whenever you stop operation.
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.
WARNING
To reduce the risk of component rupture, which
could cause serious injury, including fluid injection,
never pressurize the flow meter without the elec-
tronic sensor device installed.
Do not exceed the maximum working pressure of
your meter or any component or accessory in your
system.
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
See the Technical Data for fluid and ambient tem-
perature limits.
Only use the flow meter with fluids that are compat-
ible with the “Wetted Parts” listed in the Technical
Data.
Do not allow the fluid to set in the flow meter.
Before shutting down the system, flush the meter
as instructed in Maintenance.
Flow Volume Range
CAUTION
The flow meter gear can be damaged if it rotates 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.
METER MODEL NO.
FLOW RANGE
gal/min (cc/min)
PPM 3050H
0.01–0.5 (38–1900)
PPM 3100H
0.02–1.0 (75–3800)
PPM 3550H
0.1–5.5 (380–21,000)
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.
If the flow meter accuracy is outside of your
acceptable limit, clean the meter as instructed in
Maintenance. If the problem continues, return the
meter to Graco for re-calibration or parts replace-
ment.
PROBLEM: No Flow Volume Display
If there is no flow volume displayed at your monitor,
check the following:
CAUSE
SOLUTION
1. Flow volume is too low to
be measured
2. Fluid is not flowing
3. Poor cable connection
4. Damaged cable.
5. Damaged sensor unit.
1. Increase flow volume.
2. Check for clogs in fluid
line or in the meter itself.
3. Check connection to
ensure it is tight and free
of contaminates.
4. Replace cable.
5. Replace sensor.*
* Do not service the electronic sensor. If the sensor is not
operating properly, you must return it to Graco for service.
NOTE: See the PPD 200 instruction manual 308–242 for
detailed information on the remote monitor.
