Nordson Encore Manual Spray Gun Trigger Switch Replacement Owner's Manual

Instruction Sheet

P/N 1102249A

Encore

r

Manual Powder Spray Gun

Trigger Switch Replacement

Introduction

The Encore trigger switch has been redesigned to eliminate the notches on the side of the switch body. The new switch has a white identifying dot on the switch header where it plugs into the display module, so it can be identified without removing the switch from the gun handle (See Figure 1).

Preparation

1. Remove the nozzle nut, nozzle, and electrode assembly.

2. Disconnect the powder feed hose adapter, purge air tubing, and air wash tubing from the gun handle.

Gun Disassembly

1. See Figure 1. Unscrew the top (M3 x 30) screw (11) holding the hook

(10) and display module (9) onto the gun body.

2. Slide the hook off the display module (9).

3. Unscrew the bottom (M3 x 20) screw (12) (display module to gun).

5. Disconnect the display module ground connector (A). This ground cable is connected to the barbed fitting in the handle base. Older units do not have a separate ground cable.

6. Disconnect the gun cable/display module connectors (J3).

7. Carefully remove the clear adhesive support pad and the trigger switch header from the display module.

NOTE: The trigger switch kit includes a new adhesive support pad.

8. On the display module, carefully clean the switch header mounting surface and surrounding area with isopropyl alcohol. Allow the surface to dry completely before connecting the new switch header.

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2 Encore Manual Spray Gun Trigger Switch Replacement

11

10

Remove 2 liners

(new switch)

9

A

12

New Switch Design

Identifying Dot

J3

Switch

Header

Adhesive

Support Pad

J3

Ground

Connector

GENERATION

Figure 1 Display Module Removal/Installation

9. Display module

10. Hook

11. M3 x 30 screw

12. M3 x 20 screw

A. Ground wire connector

9. See Figure 2. Insert a small screwdriver into the recess in the J2 gun

cable/power supply connectors to release the catch and disconnect the

PREVIOUS

11. Slide the power supply (6) out of the gun body and pull the power supply leads and connector out of the bulkhead.

12. Check the gasket on the bulkhead and replace it if it is damaged.

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Encore Manual Spray Gun Trigger Switch Replacement 3

6

8

J2

Figure 2 Removing Bulkhead and Power Supply

6. Power supply 8. Bulkhead

Align Ribs and Grooves

13. Remove the M5 x 10 nylon screw (24) from the gun body.

24 GENERATION

Figure 3 Removing Gun Body Screw

14. See Figure 4. Grasp the handle in one hand and the gun body in the

other. Press the thumbs of each hand together while pulling in opposite directions to separate the gun body from the handle.

PREVIOUS

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Figure 4 Separating Handle and Gun Body

15. See Figure 5. Remove the elbow (13) from the inlet tube (23).

16. Remove the two M3 x 20 screws (12) securing the handle base (22) to the handle assembly.

Part 1102249A

4 Encore Manual Spray Gun Trigger Switch Replacement

17. Pull the base away from the handle assembly about 25−50 mm

(1−2 in.).

18. Pull the clear 4-mm tubing (4A, part of filter assembly) off the barbed fitting (20).

4A 20 13 23 22 12 23

Figure 5 Removing the Elbow and Separating the Base from the Handle

4A. Clear 4-mm tubing

12. M3 x 20 screws

13. Elbow

20. Dual barbed fitting

20

22. Handle base

23. Inlet tube

19. See Figure 6. Gently pull the ground pad (27) away from the handle,

starting with the bottom and rotating it up and away.

GENERATION

27

PREVIOUS

Figure 6 Removing the Ground Pad

20. See Figure 7. Separate the right and left handles (25, 26).

21. Remove the main trigger, settings trigger, and trigger actuator (16, 17,

18) from the right handle half.

22. Remove the trigger switch (15) from the right handle half.

23. Carefully clean the switch mounting surface with isopropyl alcohol.

Allow the surface to dry completely before installing the new switch.

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16

25

Encore Manual Spray Gun Trigger Switch Replacement 5

15

27

17

18

22

26

28

Figure 7 Separating Handles and Removing Trigger Switch

15. Trigger switch

16. Settings trigger

GENERATION

17. Main trigger

22. Handle base

23. Inlet tube

26. Left handle

27. Ground pad

28. Gun cable

18. Actuator 25. Right handle 28A. Ground terminal

19. Retaining ring B. Display module ground

Gun Assembly

PREVIOUS

1. Remove the adhesive liner from the new trigger switch. New switches do not have notches in their sides.

2. See Figure 8. Install the trigger switch (15) on the mounting flat of the

right handle (25), up against the tabs on the side and the bottom flat.

Press firmly on the switch to secure it in place.

3. Install the actuator (18) and settings trigger on the main trigger (17), with the settings trigger (16) gusset up. Slide the triggers over the trigger pivot pin on the right handle half.

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6 Encore Manual Spray Gun Trigger Switch Replacement

25

15

Gusset

Pivot Pin

Tabs

Bottom Flat

Figure 8 Trigger Switch Installation Steps 1−3

16

17

18

Gun Assembly

28 press the handles together.

2. See Figure 9. Feed the cable (28) connectors into the bottom front of

the handle, then slide the inlet tube (23) through the tube guides while routing the cable (28) out the top of the handle. Leave the base about

1.5−2 inches from the bottom of the handle.

3. Route the 4-mm clear tubing from the gun body through the handle and connect it to the barbed fitting (20) in the base, if previously

Tube Guides

22 disconnected.

20 23

Clear tubing

28

Figure 9 Handle Assembly

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Encore Manual Spray Gun Trigger Switch Replacement 7

4. See Figure 10. Hook the ground pad (27) behind the locator tabs and

rotate the ground pad into position against the handles.

5. Attach the base (22) to the handles with the two M3 x 20 screws (12).

Hand tighten the screws only.

27

Locator Tabs

Figure 10 Installing Ground Pad and Base

27

22 12

6. See Figure 11. Slide the power supply into the upper cavity of the gun

body, guiding the guide ribs inside the gun body between the mating grooves on the power supply.

Align Ribs and Grooves

GENERATION

Figure 11 Power Supply Installation

7. Press on the end of the power supply to ensure that the contact tip at the end of the gun body is firmly seated against the brass contact inside the end of the power supply.

8. See Figure 12. Position the lower edge of the bulkhead behind the

PREVIOUS

9. Feed the power supply connector through the top opening in the bulkhead.

10. Route the trigger switch header, gun cable connectors, and display module ground connector through the bottom opening in the bulkhead.

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8 Encore Manual Spray Gun Trigger Switch Replacement

Gun Assembly

(contd)

Bulkhead

Power

Supply

Connector

Gun

Cable

Connectors

Display Module

Ground Connector

Trigger

Switch

Header

Screw Boss

Figure 12 Assembling Bulkhead and Routing Cables

11. See Figure 13. Insert the outlet tube (14) with O-rings installed through

the front of the gun body until the end is even with the end of the gun body.

12. Make sure the O-ring is installed in the groove on the inlet powder tube.

Install the elbow (13) onto the end of the inlet tube.

13. Align the gun body assembly with the handle and slide them together, engaging the internal ribs of the gun body with the tabs in the handle.

GENERATION

14

Internal Ribs

13

Part 1102249A

Figure 13 Outlet Powder Tube, Elbow, and Gun Body Installation

13. Elbow 14. Outlet powder tube

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Encore Manual Spray Gun Trigger Switch Replacement 9

14. See Figure 3. Install the M5 x 10 flat head nylon screw into the gun

body to secure it to the handle.

15. See Figure 13. Use your finger or a wooden dowel to align the inside

end of the powder tube with the elbow then push on the tube to seat it in the elbow.

16. Connect the cable connector to the power supply connector.

17. See Figure 14. Install the display module as follows:

a. Make sure the display module switch mounting surface is clean and dry. Clean old adhesive off with isopropyl alcohol and dry before connecting the new switch.

b. Remove the two adhesive liners from the connector side of the trigger switch header.

c. Align the trigger switch header with the display module receptacle and push on the header to connect it. Apply even pressure on the header to seal it tightly against the display module.

d. Remove the liner from the new adhesive support pad and install it over the trigger switch header. Apply even pressure on the support pad to secure and seal it to the display module.

e. Connect the display module and gun cable J3 connectors together.

f.

Gently fold the trigger switch ribbon cable and display module cable into the gun, and install the display module onto the gun.

g. Secure the module with the bottom (M3 x 20) screw (12).

top (M3 x 30) screw (11).

PREVIOUS

Part 1102249A

10 Encore Manual Spray Gun Trigger Switch Replacement

11

10

9

A

12

Remove 2 liners

(new switch)

New Switch Design

Identifying Dot

J3

Switch

Header

Adhesive

Support Pad

J3

Ground

Connector

GENERATION

Figure 14 Display Module Replacement

9. Display module

10. Hook

11. M3 x 30 screw

12. M3 x 20 screw

A. Ground wire connector

18. Install the electrode assembly, nozzle, and nozzle nut.

19. Connect the purge air tubing, air wash tubing, and powder feed hose PREVIOUS

21. Turn on the interface and check the gun functions.

Trigger Switch Kit

Part

1101872 KIT, trigger switch, Encore

NOTE A: Kit includes new adhesive support pad.

Description Note

A

Part 1102249A

Issued 6/10

Original copyright date 2010. Encore, Nordson, and the Nordson logo are registered trademarks of Nordson Corporation.

E 2010 Nordson Corporation