Graco Inc EM390 instruction manual When to Flush, Startup after storage

WHEN TO FLUSH

NOTE: The Pressure Relief Procedure Warning is on page 16.

CAUTION

NEVER leave water or water±base paint in the sprayer if there is the slightest change it could freeze. Flush out the water or water±base paint with mineral spirits. If water freezes in the pressure con- trol tube, it prevents the sprayer from being started, and causes serious damage to the pressure control.

1.New Sprayer. The sprayer was factory tested in lightweight oil, which was left in to protect the pump parts.

Before using water-base paint, flush with mineral spirits, followed by a soapy water flush, and then a clean water flush.

Before using oil-base paint, flush with mineral spirits, only.

2.Changing Colors. Flush with a compatible solvent such as mineral spirits or water.

3.Changing from water-base to oil-base paint. Flush with warm, soapy water, then mineral spirits.

4.Changing from oil-base to water-base paint. Flush with mineral spirits, followed by warm, soapy water, and then a clean water flush.

5.Storage.

Water-base paint: Flush with water, and then mineral spirits. Leave the pump, hose and gun filled with mineral spirits. Shut off the sprayer and open the pressure drain valve to relieve pressure.

Oil-base paint: Flush with mineral spirits. Shut off and unplug the sprayer, open the pressure drain valve to relieve pressure.

6.Startup after storage.

Before using water-base paint, flush out the min- eral spirits with soapy water, and then with clean water.

When using oil-based paint, flush out the mineral spirits with the paint to be sprayed.

NOTE: HOW TO FLUSH is on page 14.

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