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Operation
26 3A2012J
Startup
NOTE: Do not exceed 20 psi (0.14 MPa, 1.4 bar) on the
material air pressure regulator until a steady material
flow has been established.
1. Verify wetcup is filled with Graco Throat Seal
Liquid (TSL
™
).
2. Ensure main air line is connected to the air control
panel air inlet (AA).
3. For internal mix proportioners only, check solvent
line:
a. Verify gun is ready to begin operation. See gun
manual.
b. Turn shutoff valve (AP) on the air control panel
to the open position.
c. Open the air valve on the solvent pump and
adjust the solvent pressure to 90 psi (0.63 MPa,
6.3 bar).
d. Open the ball valve on the solvent pump.
e. Open solvent knob on the gun to verify that sol-
vent will flow out of the front of the gun through
the dispense tip, then close the valve.
4. If this is the first startup of the machine, perform the
Flush procedure on page 30.
5. As desired, perform Prime, Flush, or Spray proce-
dures beginning on page 27. Make sure to flush the
system before first use to flush out oil used to test
the equipment at the factory.
To avoid overpressurization, before turning on the
main air supply ensure all regulators are adjusted fully
counter-clockwise so they are set to zero pressure.
Oil left in the system at the factory can react with cata-
lyst and create a fire or explosion.
• Flush before first use.
• Do not add catalyst to the catalyst reservoir until
the system has been flushed.