Graco 313289s Empty and Flush Entire System new sprayer or end of job, Procedure, Guidelines

Flush

Empty and Flush Entire System (new sprayer or end of job)

Procedure

1.Follow Pressure Relief Procedure, page 12, and Flush Mixed Material, page 14, as required. Engage trigger lock. Turn main pump air regulator (CD) fully counter-clockwise to shut off.

NOTE: CD

• If system includes heaters and heated hose, turn them off and allow to cool before flushing. Do not

air regulator

turn on heaters until fluid lines are clear of sol- vent.

•Use the lowest possible pressure when flushing to avoid splashing.

•Before color change or shutdown for storage, flush at a higher flow rate and for a longer time.

•To flush only mix manifold, see Flush Mix Manifold

procedure page 14.	TI1949a
	r_312359_313289_13

Guidelines

Flush new systems if coating materials will be contami- nated by 10W oil.

Flush system when any of the following situations occur. Flushing will help prevent materials from clogging the line between hoppers and pump inlets.

•anytime sprayer will not be used for more than one week

•if materials used will settle

•if using thixotropic resins that require agitation

NOTE:

When flushing coating materials remove pump fluid fil- ters, if installed, and soak in solvent to decrease clean- ing time. Proceed with Step 2. If flushing a new system, leave filters in place.

2.Move circulation return lines to separate fluid con- tainers to pump remaining fluid out of system.

3.Increase main pump air regulator (CD) pressure to 30 psi (21 kPa, 2.1 bar).

4.Select . Press .

NOTE:

When running pumps independently set to or

. Press and as needed to clean.

NOTE:

If sprayer does not start with static pressure, increase air pressure by 10 psi (69 kPa, 0.7 bar) increments. To avoid splashing do not exceed 40 psi (28 kPa, 2.8 bar).

16 313289S