Batch Dispense Or Ratio Test - Graco XM 24W626 Operation Manual

System Verification
NOTE: Calibration is not finished until a successful
Ratio Test is performed. See Batch Dispense or Ratio
Test, page 50.
System Ratio Mode
by Weight

Batch Dispense or Ratio Test

This test dispenses a calculated volume of each fluid
based on ratio. The two fluids combined equal the batch
size selected.
Graco recommends running the following tests daily
prior to spraying on the production surface.
Follow this procedure to dispense a batch (into one con-
tainer) for touch-up work or to verify the dispensed ratio
(use separate containers for fluids A and B).
When checking the ratio, use a gram scale to tare the
two containers then weigh the dispensed materials.
1. Close mix manifold material ball valves.
2. Close recirculation ball valves.
50
3. Pressurize the material lines:
ti20129a
4. Enter Test Screens (page 79).
d. Set metering pump air regulator (CD) pressure
to 0 psi. Verify metering pump air valve (CA) is
open.
CA
e. At the main run (fluid control) screen, press
to enter manual pump run mode.
f. Adjust metering pump air regulator (CD) pres-
sure to 50 psi (0.35 MPa, 3.5 bar).
g. Press .
h. When both the A and B metering pumps stall,
press .
CD
CD
3A2776H