Hitachi 231327 manual Flushing, When to Flush, How to Flush

Flushing

When to Flush

1.New Sprayer. This 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.

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.

CAUTION

To prevent pump corrosion, never leave water or any type of paint in the sprayer when it is not in use. Pump the water or the paint out with mineral spirits.

5.Storage.

Water base paint: flush with water, then mineral spirits and leave the pump, hose and gun filled with mineral spirits. Shut off the sprayer, remove the spark plug cable, and open the pressure drain valve to Relieve the pressure. Leave the drain valve open.

Oil base paint: flush with mineral spirits and leave the pump, hose and gun filled with mineral spirits. Shut off the sprayer, remove the spark plug cable, and open the pressure drain valve to relieve the pressure. Leave the drain valve open.

6.Startup after storage.

Before using water–base paint, flush out the mineral 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.

How to Flush

WARNING

INJECTION HAZARD

To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief Procedure on page 10.

NOTE: The word solvent refers to water or oil-based solvent.

1.Relieve pressure.

2.Remove the filter bowl (A) and screen (B); see instruction manual 307273, supplied. Install the bowl and support (C), without the screen, to flush. Clean the screen separately. See Fig. 5.

3.Close the pressure drain valve.

4.Put the suction tube in a grounded pail of solvent.

5.Remove the spray tip from the gun(s).

WARNING

To reduce the risk of static sparking and splashing when flushing, always remove the spray tip from the gun, and hold a metal part of the gun firmly to the side of, and aimed into, a grounded metal pail. See Ref. A in Fig. 4.

Fig. 4	A
	01024

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