Shutdown And Care - Graco EM 390 Instructions And Parts List

Portable/electric airless paint sprayer 2500 psi (172 bar) maximum working pressure

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Instructions for use manual (28 pages)

Instructions-parts list manual (29 pages)

Table Of Contents

Table of Contents

1. Check the packing nut/wetcup daily. First relieve

the pressure; see page 9. Be sure the wetcup is 1/3

full of TSL at all times to help prevent fluid buildup on

the piston rod and premature wear of packings. The

packing nut should be tight enough to stop leakage,

but no tighter. Overtightening may cause binding and

excessive packing wear. See Fig 12–1.

2. Clean the fluid filter often and before storing the

sprayer. First relieve pressure; see page 9. See

manual 307–273, supplied, for the filter cleaning

procedure.

3. Flush the sprayer at the end of each work day and

fill it with mineral spirits to help prevent pump corro-

sion and freezing. Refer to the flushing guidelines on

pages 13 and 14.

CAUTION

Never leave water or any paint in the sprayer over-

night to: (1) prevent pump corrosion; (2) prevent the

fluid from freezing in the pump and pressure control

which can cause loss of pressure, stalling or serious

sprayer damage.

Always use mineral spirits for the final flush, relieve

pressure and leave the mineral spirits in the sprayer.

4. For very short shutoff periods, leave the suction

tube in the paint, relieve the pressure, and clean the

spray tip.

5. Coil the hose and hang it on the cart's hose rack

when storing it, even for overnight, to help protect the

hose from kinking, abrasion, coupling damage, etc.

See Fig 12–2.

6. For the Lo–Boy cart, use the brackets on the side of

the cart to hold the suction assembly. See the Parts

Drawing on page 31.

7. Lubricate the bearing housing after every 100

hours of operation. Remove the drive housing cover.

Fill the bearing housing with SAE non-detergent oil.

See Fig 12–3.

WARNING

Refer to the warning section HOSE SAFETY on

page 3 for information on the hazard of using dam-

aged hoses.