Maintenance. Graco 3A0237P - Heated Hoses and Applicator Kits

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Maintenance. Graco 3A0237P - Heated Hoses and Applicator Kits | Manualzz

Maintenance

Maintenance

1. Before disconnecting or repairing hoses, relieve all fluid pressure and shut off electrical power to pro portioner. See system operation manual.

2. Be sure fluid is cool before disconnecting hoses.

Instructions for Replacing

Individual A or B Hose

1. Before disconnecting hoses, relieve all fluid pres sure and shut off electrical power to proportioner.

See system operation manual.

2. Disconnect electrical wire from connectors (5). Dis connect fluid hose and remove from bundle.

3. For whip hose bundles, see Bundle Individual

Whip Hoses on page 27.

4. For hose bundles, see Bundle Individual Heated

Hoses on page 29.

Clean Orifice

Only for MD2 Valve using Orifice Block Kit 24E505 and an orifice.

NOTE: 24E505 does not come with an orifice. See on page 40 for orifice part numbers.

1. Follow Pressure Relief Procedure in MD2 valve manual.

2. Use 5/16 in. nut driver to remove orifices.

NOTICE

To prevent cross-contamination of the orifices do not interchange A component and B component parts. The A component orifice is marked with an

A.

3. Remove cap from orifice.

NOTE: The cap is held in place with reverse threads.

4. Remove needle from orifice. Thoroughly inspect all o-rings and replace if necessary.

5. If necessary, use drill bit that is the same size as the orifice to drill out the orifice. Orifice size is marked on the orifice.

6. Liberally lubricate all o-rings.

7. Reassemble in reverse order. Torque orifices into fluid housing to 20-30 in-lb (2.26-3.39 N•m).

3A0237P 25

Maintenance

26 3A0237P

Maintenance

Bundle Individual Whip Hoses

Individual whip hoses must be bundled with scuff guards and air and signal cables. Follow the instructions below to bundle single and dual heat zone whip hose bundles.

See F

IG

. 21 on page 28.

1. Lay out the A and B material hoses with the male fit tings at the same end of the bundle.

2. Lay out the air hose (3) with the male fitting at the same end as the male fittings of the material hoses.

NOTE: The female fitting of the air hose should be 6 in. (152.4 mm) beyond the female fitting of the mate rial hoses.

3. Lay out the signal cable (4) with the female end of the signal cable at the same end as the male ends of the material hoses.

NOTE:

The male sign cable connector (4) should be 6 in. beyond the female ends of the material hoses.

Use electrical tape (8) to secure position of sig nal cable 10 in. (254 mm) back from the end of the material hose.

4. Connect Electrical Connectors.

For Single Zone Heated Whip Hose Bundles: a. Place one 6 AWG electrical connector (5) 24 in.

(609.6 mm) from the male material hose fittings.

b. Connect the 6 AWG wire from each material hose to the electrical connector (5).

c. Use black electrical tape (8) to secure the con nector to the hose bundle.

For Dual Zone Heated Whip Hose Bundles:

a. Place two 6 AWG electrical connectors (5) 24 in. (609.6 mm) from the male material hose fit tings.

b. Unlace the 6 AWG wire from each material hose, trim back the wire, and connect to the electrical connector (5).

c. Use black electrical tape (8) to secure both con nectors (5) to the correct material hose.

5. Apply scuff guard (10) on each individual material hose up to the electrical connector (5).

6. Use red electrical tape (12) to secure the scuff guard (10) on the red material hose.

7. Use blue electrical tape (13) to secure the scuff guard (10) on the blue material hose.

8. Use electrical tape and temporarily tape the hose and cable ends together.

9. Feed the scuff guard (4) over the male material hose fittings.

10. Use black electrical tape (8) and secure at least 3 in.

(76.2 mm) of scuff guard (4) next to the electrical connector (5) on side with male material hose fit tings.

NOTE: Ensure no foam insulation is exposed on either material hose.

11. Fold the scuff guard (4) over itself and feed the remaining scuff guard over the entire length of the bundle.

12. Leave excess scuff guard (4) loose on the end with the female material fittings.

13. Remove electrical tape securing the hose and cable ends together.

14. Apply warning label (10) in the center of the bundle.

Secure edges with black electrical tape.

3A0237P 27

Maintenance

Dual Heat Zone Heated Whip Hose Bundle

female fittings

8

5

3

4

male connector

6 in.

(152.4 mm)

10 in.

(254 mm)

4

5

8 10

13 2

male fittings

B Side

female connector

A Side

10

12 1

16 in.

(406.4 mm)

24 in.

(609.6 mm)

27 in.

(685.8 mm)

Single Heat Zone Heated Whip Hose Bundle

4

female fittings

8

10 8

3

4

male connector

5

10

2

13

male fittings

B Side

female connector

A Side

10

12

1

F

IG

. 21: Whip Hose Bundles

28 3A0237P

Maintenance

Bundle Individual Heated Hoses

Individual hoses must be bundled with a scuff guard,

FTS cable(s), and air and signal cables.Follow the instructions below to bundle individual heated hoses for dual and single zone heat.

See F

IG

. 22 on page 30.

1. Lay out the A and B material hoses with the male fit tings at the same end of the bundle.

2. Lay out the air hose (23) with the male fitting at the same end as the male fittings of the material hoses.

3. Lay out the signal cable (24) and FTS cable(s) (25) with the female end of the cables at the same end as the male fittings of the material hoses.

NOTE:

All signal cable connectors (24) should be 2 in.

(50.8 mm) beyond the male fittings of the mate rial hoses.

Use electrical tape (29) to secure position of sig nal cable 10 in. (254 mm) back from the end of the material hose.

4. Wrap FTS Cables.

NOTICE

To heat material correctly, ensure that the red electrical tape is on the A side FTS cable and the blue electrical tape is on B side FTS cable.

a. Wrap each end of one FTS cable (25) with red electrical tape (32). This FTS cable will corre spond with the A material hose.

b. For Dual Zone Heat Only: wrap each end of the other FTS cable (25) with blue electrical tape

(33). This FTS cable will correspond with the B material hose.

5. Carefully twist the material hoses, air hose (23), and cables throughout the entire bundle with a 24 in

(609.6 mm) maximum pitch.

NOTE: Do not twist 5 ft and 10 ft hose bundle lengths.

6. Tightly wrap the bundle with lace (28) with an 8 in. maximum pitch. Use black electrical tape to stop the lacing 10 in. (254 mm) from the material fittings on each end of the hoses.

7. Use electrical tape and temporarily tape the hose and cable ends together.

8. Feed the scuff guard (26) over the female material hose fittings.

9. Use black electrical tape (29) and tape the scuff guard (26) down 10 in. from the female fittings on the material hoses. Tape at least 3 in. (76.2 mm) of scuff guard (26).

NOTE: Ensure no foam insulation is exposed on either material hose.

10. Fold the scuff guard (26) over itself and feed the remaining scuff guard over the entire length of the bundle.

11. Leave excess scuff guard (26) loose on the end with the male material fittings.

12. Remove electrical tape securing the hose and cable ends together.

13. Apply warning label (31) in the center of the bundle.

Secure edges with black electrical tape (29).

3A0237P 29

Maintenance

Dual Heat Zone Heated Hose Bundle Shown

female connectors

29

26

28 29

1

male connectors female fittings

A Side

B Side

male fittings

2 in.

50.8 mm)

25 32

25

1

No exposed foam permitted.

33

21 23

22 24

4 in.

101.6 mm)

3 in.

(76.2 mm)

1 in.

(25.4 mm)

10 in.

(254 mm)

18 in.

457.2 mm)

19 in.

(482.6 mm)

Machine End

21 23

32

A Side

25

B Side

25

22

24

33

F

IG

. 22: Heated Hose Bundles

30 3A0237P

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