Graco 3A0868G important safety instructions Spraying, Purging, Bration 1 and 2 Screens 22 and 23

Basic Operation

10.After the volume for A or B is entered, the ProMix 2KE controller calculates the new pump factor and shows it on Calibration 1 (Screen 22) and Calibra- tion 2 (Screen 23).

11.Before you begin production, clear the system of solvent and prime it with material.

a.Go to Mix mode.

b.Trigger the gun into a grounded metal pail until mixed material flows from the gun nozzle.

If the fluid flow rate is too low: increase air pres- sure to component A and B fluid supplies or increase the regulated fluid pressure of mixed material.

If the fluid flow rate is too high: reduce the air pressure to component A and B fluid supplies, close the dose valves further, or decrease the reg- ulated fluid pressure of mixed material.

4.Turn on atomizing air to the gun. Check the spray pattern as instructed in your spray gun manual.

Spraying			NOTE:
NOTE: See Run Mode Details, pages 39-41,for further			• Pressure adjustments of each component will
			vary with fluid viscosity. Start with the same fluid
screen information, if needed.
			pressure for component A and B, then adjust as
			needed.
			• Do not use the first 4-5 oz. (120-150 cc) of
			material as it may not be thoroughly mixed due
1. Calibrate the pumps as described in Pump Calibra-			to errors while priming the system.
	tion, page 31. Pump factors will update automati-		NOTICE
	cally based on calibration results. Make additional
			Do not allow a fluid supply tank to run empty. It is pos-
	manual changes, if desired, as described in Cali-
	bration 1 and 2 (Screens 22 and 23), page 46.		sible for air flow in the supply line to turn gear meters
	Adjust the flow rate.		in the same manner as fluid. This can damage the
			meters and lead to the proportioning of fluid and air
			that meets the ratio and tolerance settings of the
2.	Press	. The system will load the correct potlife	equipment. This can further result in spraying
	volume based on hose length and diameter entered		uncatalyzed or poorly catalyzed material.
	on Configure 2 (Screen 19). Once material is

loaded, the system returns to Standby. Press again to spray the loaded recipe.

3.Adjust the flow rate. The fluid flow rate shown on the Display Module screen is for either component A or B, depending on which dose valve is open.

Flow rate

Purging

NOTE: See Run Mode Details, pages 39-41,for further screen information, if needed.

There are 2 purging procedures in this manual:

•Purging Mixed Material

•Purging Fluid Supply System

Use the criteria listed for each procedure to determine which procedure to use.

FIG. 18. Flow Rate Display

32 3A0868G