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System Operation
312779E 89
Start Up
1. Go through the Pre-Operation Checklist in Table 14.
2. Turn the AC Power Switch ON (I = ON, 0 = OFF).
➜ Graco logo, software revision, and “Establishing
Communication” will display, followed by Status
screen. See page 22.
➜ At power up the system defaults to Recipe 61,
which is not a valid recipe number. Initiate a
color change to Recipe 0 or a valid recipe num-
ber (1-60).
➜ In bottom left corner, the system status dis-
plays, which can be Standby, Mix, Purge, or an
alarm notification.
3. Verify that the EasyKey is working. The active rec-
ipe number and Standby mode should be displayed.
4. If this is the first time starting up the system, purge it
as instructed in Purging Fluid Supply System,
page 96. The equipment was tested with lightweight
oil, which should be flushed out to avoid contaminat-
ing your material.
5. Make sure that the EasyKey is in Standby (remove
Mix input).
6. Adjust component A and B fluid supplies
as needed for your application. Use low-
est pressure possible.
7. Do not exceed the maximum rated work-
ing pressure shown on the system identification
label or the lowest rated component in the system.
8. Open the fluid supply valves to the
system.
9. Adjust the air pressure. Most appli-
cations require about 80 psi (552
kPa, 5.5 bar) air pressure to operate properly. Do
not use less than 75 psi (517 kPa, 5.2 bar).
Table 14: Pre-Operation Checklist
✓ Checklist
System grounded
Verify all grounding connections were made. See
the Installation manual.
All connections tight and correct
Verify all electrical, fluid, air, and system connec-
tions are tight and installed according to the
Installation manual.
Check air purge valve tubing
Check the air purge valve supply tube daily for
any visible solvent accumulation. Notify your
supervisor if solvent is present.
Fluid supply containers filled
Check component A and B and solvent supply
containers.
Mix manifold valves set
Check that mix manifold valves are set correctly.
Start with the settings recommended in Mix Mani-
fold Valve Settings, page 88, then adjust as
needed.
Fluid supply valves open and pressure set
Component A and B fluid supply pressures should
be equal unless one component is more viscous
and requires a higher pressure setting.
Solenoid pressure set
75-100 psi inlet air supply (0.5-0.7 MPa, 5.2-7 bar)
F
IG
. 100. Power Switch
I = ON
TI12656a
F
IG
. 101. Status Screen