Graco ProMix PD2K Operation page 96

Calibration Checks
Calibration Checks
Calibration Calibration
Pump Pump Pressure Pump Pressure Check Pressure
NOTE: Enter the transducer calibration data before
NOTE: NOTE:
doing the pressure check.
Perform Perform the Perform the pressure the pressure check: pressure check: check:
• The first time the system is operated.
• Whenever new materials are used in the system,
especially if the materials have viscosities that
differ significantly.
• At least once per month as part of regular
maintenance.
• Whenever a pump is serviced or replaced.
During each pressure test, the dose valve will close
during an up stroke and a down stroke (in either
order). This test is to verify that the valves are
seating properly and not leaking. If leaking occurs,
the system will alarm after the test for that particular
pump direction.
NOTE: NOTE: Do not trigger the spray device during the NOTE:
pressure check.
96
Checks
Checks
Check Check
1. The pump and lines must be primed with color or
catalyst before doing the Pressure Check. See
Prime and Fill the System, page
2. If the display is on a Run Mode screen, press
to access setup screens.
3. Scroll to Calibrate to display
Calibrate Screen 1, page
4. Press the Pressure Check
desired pump. The pump will build pressure in
the line to a minimum of the Stall Test Pressure.
The pump will then move to the center stroke
position and stall test the upstroke, followed by
the downstroke.
5. The pressure and flow that the unit measured
are displayed on the screen. Compare
with the maximum leak rate entered on
System Screen 5, page
substantially different, repeat the test.
NOTE: NOTE: The stall test pressure set point is a NOTE:
minimum. The system may stall at a higher
pressure depending on hose lengths and fluid
composition.
20.
88.
button for the
74. If the values are
3A4486D