PatternPro Variable Pitch Guns.pdf - 第33页

4204026A Cleaning a nozzle with a probe (typical) 29 P/N 1048257_03  2018 Nordson Corporation PatternPro Edition 02/18 Cleaning Nozzles (contd) Table 4 Nozzle Removal and Installation Procedures (contd) Nozzle Type Remo…

P/N 1048257_03

 2018 Nordson Corporation

PatternPro

Edition 02/18

Maintenance

The following table provides the recommended schedule for applicator

maintenance. Detailed procedures for weekly and semi‐annual maintenance

tasks are provided.

Frequency Task Notes

Daily Remove hot melt material and char

from the exterior of the applicator

assembly.

Weekly Clean the applicator nozzle(s). A, B

Semi‐annually Inspect the applicator wiring.

NOTE A: Use a nozzle cleaning kit, P/N 901915.

B: Process‐specific nozzle performance history may indicate the need for

more or less frequent nozzle cleaning.

Cleaning Nozzles

Applicator nozzles may become clogged when char, a by‐product of

overheating the hot melt material, becomes lodged in the nozzle. The use of

an in‐line or integral filter will significantly reduce nozzle clogging.

1. Heat the applicator to operating temperature.

2. Disable the applicator. Refer to Safety.

3. Remove nozzles as shown in Table 4.

Table 4 Nozzle Removal and Installation Procedures

Nozzle Type Removal Procedure Installation Procedure

Ball and seat (for use with Saturn

nozzles).

SureBead

Use a wrench to loosen the

nozzle, then remove the nozzle

by hand (wear safety gloves).

Thread the nozzle onto the

module threads by hand; then

use a torque wrench to tighten

the nozzle to 4.5 Nm (40 in.‐lb).

4204026A

Cleaning a nozzle with a

probe (typical)

P/N 1048257_03

 2018 Nordson Corporation

PatternPro

Edition 02/18

Cleaning Nozzles (contd)

Table 4 Nozzle Removal and Installation Procedures

(contd)

Nozzle Type Removal Procedure Installation Procedure

Zero cavity module nozzle 1. Scribe or otherwise place a

distinctive mark on the side of

the nozzle. Use the same

mark on the applicator body

to identify the correct

replacement location for the

nozzle.

2. Remove the nozzle by

removing the four screws that

secure it to the module.

3. Remove and discard the

nozzle O‐ring.

1. Lubricate with heat‐resisting

lubricant and install a new

nozzle O‐ring.

2. Install the nozzle on the

module, verifying that the

needle guide is still inside the

nozzle and that the nozzle is

properly aligned with the

needle tip and with the scribe

made earlier.

3. Secure the nozzle with the

screws removed previously.

WARNING: Risk of fire. Do not heat Nordson Type R fluid above 245 C

(475 F). Use only an industrial grade, regulated, electrical heating device

that is designed to heat industrial fluids. Personal injury or property damage

can result if Type R cleaning fluid is heated with an open flame or in an

unregulated heating device.

4. Soak the nozzles in Nordson Type R cleaning fluid that has been heated

above the melting point of the hot melt material, to a maximum of

177 C (350F).

5. Remove the nozzles from the cleaning fluid.

CAUTION: Use the correct size precision pin probe to clean Nordson

nozzles. The use of non‐precision or incorrectly sized probes may damage

the nozzle. The Nordson nozzle cleaning kit (P/N 901915) contains a variety

of probe sizes.

6. At the outlet of each nozzle, insert a correctly sized cleaning probe.

7. With a clean cloth, firmly grip the cleaning probe, then pull the probe out

of the nozzle, wiping the probe clean.

8. Reinstall the nozzles. Refer to Table 4.

P/N 1048257_03

 2018 Nordson Corporation

PatternPro

Edition 02/18

Inspect the Applicator Wiring

For details on inspecting the applicator wiring, refer to Replacing the RTD or

Heater in Repair.