Operation
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.
To avoid overpressurization, before turning on the main air supply ensure all regulators are adjusted fully
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.
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.
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.
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