Replace Electronics Cover. Graco 3A5379B, Electric Supply System for Sealants and Adhesives

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Replace Electronics Cover. Graco 3A5379B, Electric Supply System for Sealants and Adhesives | Manualzz

Replace Electronics Cover

Removal

Repair

6. Unscrew the ground screws from the fan and power cord ground wires.

1. Perform the Pressure Relief Procedure , page 14.

2. Disconnect the unit from the power source.

3. Remove the lower from the driver. See Remove

Driver on page 35.

NOTE: This is required to complete the calibration pro cedure (page 29).

4. Remove two screws (6) and remove the junction box cover (5).

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F IG . 26: Ground Screw Location

7. Use a wire cutter to cut ferrule tips from the fan wires and motor power wires.

NOTE: Cut the wires as close to the ferrules as possi ble. Do not cut the tip off of the ground wires.

7

7

7

/

/

/

51

BA

6

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F IG . 25: Junction Box Cover

5. Loosen the cord screws on the disconnect block

(51) and disconnect the wires from locations 1L1 and 5L3.

NOTE: Power cord cables (excluding the ground wire) may remain attached.

7

7

7

/

/

/

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F IG . 27: Disconnect Fan Wires

8. Use an adjustable wrench to loosen the fan cord grip (C1).

3A5379B

C1

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F IG . 28: Loosen Cord Grip

9. Pull the fan wires out through the cord grip.

27

Repair

10. Remove the four bolts (56) and washers, the gasket

(52), and the junction box sleeve (101).

13. Pull the wire connectors down, out of the harness clip, and disconnect the motor power and motor temperature wires (TW).

52

101

56

TW

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F IG . 29: Junction Box Sleeve

11. Remove the 12 screws (20) and washers from the electronics cover (50).

F IG . 32: Motor Wires

14. Disconnect the stroke position sensor wire (SW).

50

20

SW

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F IG . 30: Electronics Cover Removal

12. Carefully tilt the electronics cover (50) down.

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F IG . 33: Stroke Position Wire

15. Disconnect the encoder wire (EW).

50

F IG . 31: Tilt Electronics Cover

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NOTICE

All wires must be disconnected before the cover is completely removed. Hold the cover in place while dis connecting wires or let the cover rest on a work sur face to avoid damaging the wires and connections.

EW

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F IG . 34: Encoder Wire

16. Discard the used cover gasket (53) and the junction box gasket (52).

28 3A5379B

53

NOTICE

If wires get pinched when the cover screws are tight ened, damage will occur. Make sure all wires are posi tioned inside the cover before installation.

4. Install the new junction box gasket (8).

5. Route the fan cable through the fan cord grip.

6. Connect the stripped fan wire to the motor wire and crimp the wires together.

7

7

7

/

/

/

52

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F IG . 35: Electronics Cover and Junction Box Gaskets

Installation

1. Install the new cover gasket (53) (included in the electronics cover kit). See F IG . 35, page 29.

2. Reconnect all wires.

3. Install the electronics cover (50) and tighten all 12 screws (20). Torque to 15-20 ft-lb (20-27 N•m). See

F IG . 30, page 28.

7. Connect the fan ground wire. See F IG . 29, page 28.

See F IG . 26, page 27.

8. Use an adjustable wrench to tighten the fan cord grip (C1). See F IG . 28, page 27.

9. Install the gasket (52), the junction box sleeve (101), and tighten all four bolts (56). See F IG . 29, page 28.

10. Install the junction box cover (BA) and tighten the two screws (6). See F IG . 25, page 27.

11. Install the wires into the disconnect switch (51) and tighten the wire screws.

NOTE: The lower must be removed from the system in order to calibrate correctly. The calibration stroke length is longer than the operating stroke. Leaving the lower attached will cause the driver rod to contact the lower rod and it will not calibrate correctly.

12. Connect the power cord.

13. Engage power.

Driver Motor Encoder Calibration

NOTE: The driver must be de-coupled from the lower and must be able to cycle freely with no obstructions.

1. Cycle power to the driver by first turning the discon nect switch (K) to OFF, and then to ON again.

2. Wait for the status indicator LED (L) to turn on solid or start blinking.

3. Within 30 seconds, rapidly turn the driver pressure control knob (AK) back and forth from 0 to 10 at least five times and then set the knob back to 0. If the status indicator LED (L) was solid before, it will begin blinking an encoder calibration error (code 8) during the calibration process.

4. The driver output shaft (Y) will run up and down slowly over the course of several minutes.

5. Midway through the auto-calibration process, the driver output shaft (Y) will pause as it moves to the next step.

6. The driver output shaft (Y) will move up and down faster 5-6 times.

7. Ensure the auto-calibration process is complete before continuing. Wait for the LED to stop blinking.

Repair

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F IG . 36: Install Fan Wires

3A5379B 29

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