Graco 308919B - Replacement PC Board Kit for: GMAX 3900, 5900, 7900, 5900 Convertible 3900 LineLazers and 5900 LineLazers Instructions

Instructions

Replacement PC Board Kit for:

GMAX 3900, 5900, 7900, 5900 Convertible

3900 Line Lazers and 5900 Line Lazers

For professional use only.

Model 241093, Series A

3300 psi (227 bar, 22.7 MPa) Maximum Working Pressure

Important Safety Instructions

Read all warnings and instructions in the operations manual.

308919B

EN

Pressure Relief Procedure

Injection Hazard

The system pressure must be manually relieved to prevent the system from starting or spraying accidentally.

Fluid under high pressure can be injected through the skin and cause serious injury. To reduce the risk of an injury from injection, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you:

• are instructed to relieve pressure,

• stop spraying,

• check or service any of the system equipment,

• install or clean the spray tip.

1.

Engage gun safety latch.

2.

Turn engine or electric motor ON/OFF switch to OFF.

3.

Turn pressure control switch OFF.

4.

Unplug power supply cord (electric motor only).

5.

Disengage gun safety latch. Hold metal part of gun firmly to grounded metal pail. Trigger gun to relieve pressure.

6.

Engage gun safety latch.

7.

Open pressure drain valve. Leave pressure drain valve open until ready to spray again.

If you suspect that the spray tip or hose is completely clogged or that pressure has not been fully relieved after following the steps above, VERY SLOWLY loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually, then loosen completely. Now clear the tip of hose obstruction.

Installation

Fig. 1 shows the location of the model selector.

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Model Selector

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NOTICE

Electostatic discharges can damage components on

PC board. Use a ground strap when handling or installing PC board.

Using MOD configurations other than those specified at right results in poor sprayer performance.

1.

Follow Pressure Relief Procedure, page 1.

2.

Remove pressure control cover. See applicable sprayer manual for procedure.

3.

Remove PC board. See applicable sprayer manual for procedure.

4.

Remove and replace pressure transducer.

5.

Punch out appropriate MOD elements in new PC board according to sprayer and figure at right. Use a

0.05 in. (1.27 mm) diameter pin or smaller to punch out the MOD elements.

6.

Install PC board. See applicable sprayer manual for procedure.

7.

Install cover.

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All written and visual data contained in this document reflects the latest product information available at the time of publication.

Graco reserves the right to make changes at any time without notice.

Original instructions.

This manual contains English. MM 308919

Graco Headquarters: Minneapolis

International Offices: Belgium, China, Japan, Korea

GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA

Copyright 1999, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.

www.graco.com

Revised 11/2011