Graco XM Series Operation page 52

System Verification
3. Set main pump air regulator (CD) pressure to zero.
Open main pump and air valve (CA). Adjust main
pump air regulator (CD) pressure to 50 psi (0.35
MPa, 3.5 bar).
CA
4. Dispense fluid A:
a. Close recirculation valves (AC, AD), mix
manifold valves (AH, AJ), and both sampling
valves (AE, AF).
.
AC
AE
AH
b. Place a clean 1 quart (1000 cc) container under
sampling valve A (AE).
c. Press . Pump A light (DK) comes on.
52
d. Slowly open and adjust sampling valve A (AE)
to achieve desired flow. Pump stops
automatically; twice during test and again when
dispense completes. Pump A light (DK) turns
off, Pump B light (DK) turns on.
CD
5. Close sampling valve A (AE).
6. Dispense fluid B as follows:
a. Place a clean 1 quart (1000 cc) container under
sampling valve B (AF).
AD
b. Slowly open and adjust sampling valve B to
AF
achieve desired flow. Pump stops automatically;
twice during test and again when dispense
completes. Pump B light (DK) turns off.
c. Close sampling valve B (AF).
AJ
7. Compare fluid amounts in containers; they should
be equal at 750 ml (25.3 fl. oz.) each. Repeat test if
fluids are not equal. If problem persists, see Alarm
Codes and Troubleshooting, page 64
.
8. Return fluid used in test to corresponding fluid
supply container.
312359R