Graco XM 24W626 Operation Manual page 49

3. Select to run pump test.
NOTE: These instructions show running the system
with ratio control by weight, which is standard and
preferred for XM PFP systems. To control ratio by
volume, see Test Screens (page 79).
4. Set metering pump air regulator (CD) pressure to
zero. Verify metering pump air valve (CA) is open
(horizontal). Adjust metering pump air regulator
(CD) pressure to 50 psi (0.35 MPa, 3.5 bar).
CA
5. Dispense fluid A:
a. Close recirculation valves, mix manifold inlet
ball valves, and sampling valves.
b. Tare and place a clean 1 quart (1000 cc) con-
tainer under sampling valve A.
c. Press . Metering pump A light (DK) comes
on.
3A2776H
CD
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d. Slowly open sampling valve A until material
begins to dispense. Metering pump stops auto-
matically; twice during test and again when dis-
pense completes. Metering pump A light (DK)
turns off, metering pump B light (DK) turns on.
e. Close sampling valve A (AE).
6. Dispense fluid B as follows:
a. Tare and place a clean 1 quart (1000 cc) con-
tainer under sampling valve B.
b. Slowly open and adjust sampling valve B to
achieve desired flow. Metering pump stops
automatically; twice during test and again when
dispense completes. Metering pump B
light (DK) turns off.
c. Close sampling valve B.
7. Weigh the two samples with a gram scale and
record the net weights.
8. Return fluid used in test to corresponding fluid sup-
ply container.
Confirm Pump and Metering Test
The Confirm Pump and Metering Test screen displays
when the pump and metering test completes without
error. The screen displays the target weight of material
dispensed into each beaker from each metering pump.
The weights must be entered in grams to calibrate the
machine.
System Verification
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49