334627E, InvisiPac GM100 Plug-Free Hot Melt

334627E, InvisiPac GM100 Plug-Free Hot Melt

Troubleshooting

No adhesive or incorrect amount of adhesive out of all modules when triggered

Plugged manifold filter

Clogged hose

Failed solenoid valve

No adhesive or incorrect amount of adhesive out of one/some modules when triggered

Adhesive out of one/some modules when not triggered

No signal to solenoid valve

Incorrect solenoid valve wiring

Incorrect signal to solenoid valve

Solenoid muffler plugged

No fluid pressure

Heater failure (cold applicator)

No air to solenoid valve

Dirty or faulty triggering device

Solenoid valve connected incorrectly

Clogged manifold passage

Plugged nozzle

Failed module in closed position

Plugged module filter

Clogged manifold passage

Failed module in open position

Adhesive pressure too high

Replace manifold filter. See

Replace Inlet Filter, page 14 .

Clean or replace hose.

Check for correct operation. Clean or replace.

Check solenoid valve for correct operation.

Check solenoid valve wiring.

Check if 24 VDC.

Check and replace mufflers.

Check adhesive delivery system.

Check and replace heater cartridges.

See

Replace Heater Cartridge, page 21 .

Check air supply.

Check, clean, or replace triggering device.

Check solenoid valve air connections.

Clean or replace manifold.

Clean or replace nozzle.

Check for correct operation.

Clean or replace.

See

Check Module, page 18 .

Replace module.

See

Replace Module, page 25 .

Clean or replace manifold.

Clean or replace module. See

Replace Module, page 25 .

Check and reduce fluid pressure.

334627E 15

Troubleshooting

Applicator will not heat

Applicator overheats

Applicator under-heats

Adhesive leaking from applicator

Heater failure

Loose cord set connection

RTD failure

Incorrect RTD for adhesive delivery system

Thermal cutoff failure

Wrong RTD type selected

Heater failure

RTD failure

Incorrect RTD for adhesive delivery system

Incorrect power to heater

Wrong RTD type selected

Heater failure

RTD failure

Incorrect RTD for adhesive delivery system

Incorrect power to heater

Wrong RTD type selected

Module o-ring failure

Inlet fitting loose

Manifold filter o-ring failure

Nozzle loose

Check and replace heater cartridge.

See

Replace Heater Cartridge, page 21 .

Check connection.

Check and replace RTD. See

Check RTD, page 20

.

Check delivery system RTD requirement

Check and replace thermal cutoff.

See

Replace Thermal Cutoff, page 22

.

Check RTD type settings on the system. Change if necessary. See

Select RTD, page 12 .

Check and replace heater cartridge.

See

Replace Heater Cartridge, page 21 .

Check and replace RTD. See

Check RTD, page 20

.

Check delivery system RTD requirement.

Check and correct power.

Check RTD type settings on the system. Change if necessary. See

Select RTD, page 12 .

Check and replace heater cartridge.

See

Replace Heater Cartridge, page 21

Check and replace RTD.

Check delivery system RTD requirement.

Check and correct power.

Check RTD type settings on the system. Change if necessary. See

Select RTD, page 12 .

Check and replace o-ring. See

Replace Module, page 25 .

Tighten fitting.

Check and replace o-ring.

Tighten nozzle.

16 334627E

Troubleshooting

Speed has reduced on one module

Adhesive out of all modules when not triggered

Low air pressure to solenoid valve Check air supply

Low fluid pressure

Low applicator temperature

Check adhesive delivery system

Check heat operation. See

“Applicator will not heat” section in

Troubleshooting, page 15 .

Plugged manifold filter

Module piston seal air leak

Solenoid valve failure

Adhesive pressure too high

Solenoid valve connected incorrectly

Module failure

Replace manifold filter (see

Replace Inlet Filter, page 14

).

Check solenoid air close exhaust port

(O). See

Replace Module, page 25 .

Check and replace solenoid valve.

Check and reduce fluid pressure.

Check solenoid valve air connections.

No air to solenoid valve

Check and replace all modules. See

Check Module, page 18 .

Check air supply.

334627E 17

Troubleshooting

Check the module operation to verify if the module has failed and needs to be replaced.

1.

Visually check for the presence of glue in the weep hole (W).

replaced. See

Replace Module, page 25

.

2.

Verify that the air pressure to the solenoid valve is 65–80 psi (4.4 – 5.5 bar, 0.44 – 0.55 MPa).

6.

Remove the nozzle.

7.

Press the manual over-ride switch to trigger the module. If glue flows from the seat, the module is functioning properly.

Trigger the applicator without the nozzle to determine if the nozzle or module is clogged.

1.

Disable applicator assembly. See

Before Beginning Repair, page 21 .

2.

Use a 1/2 in. wrench to loosen the nozzle and remove by hand.

3.

Verify that there is air pressure to the motor, which will verify that there is fluid pressure.

4.

Make sure the system is at the correct temperature.

5.

While looking in the weep hole press the solenoid valve manual override switch (M) to manually trigger the applicator.

3.

Connect the power and solenoid cable.

4.

Return the applicator back into operation.

5.

Trigger the applicator.

a.

If adhesive flows, clean the nozzle and reinstall on the module.

b.

If adhesive does not flow, the module is clogged and needs to be replaced. See

Replace Module, page 25 .

moves then the module is functioning properly. If the rod does not move, the module needs to be replaced. See

Replace Module, page 25

.

18 334627E

Check the continuity of the heater to verify proper resistance. If there is no continuity, the heater has failed and needs to be replaced.

1.

Disable applicator.

See

Before Beginning Repair, page 21 .

2.

Check resistance of the heater using a multi-meter between the pins of the cordset connector. See connectors illustrations in cordset pin tables.

3.

Replace the heater cartridge if the resistance reading is outside the range or if there is no continuity. See

Replace Heater Cartridge, page 21

.

C

D

A

B

Pin Description

Thermal Cutoff

Ground

Heat

E

RTD (White)

RTD (Red)

3

5

G

Pin Description

1

2

Thermal Cutoff

Heat -

RTD (White)

RTD (Red)

Ground

24W087,

24X039, or 24X760

Pt 100

(385) RTD

Cordset

24W088,

24X040, or

24X761 Ni

120 RTD

Cordset

A and C

1 and 2

Slim Models 365–405

Ohms

Dual and

Dual Low

Profile

Models

180–200

Ohms

Quad and

Quad low

Profile

Models

145–165

Ohms

Slim Models 365–405

Ohms

Dual and

Dual Low

Profile

Models

180–200

Ohms

Quad and

Quad low

Profile

Models

145–165

Ohms

Troubleshooting

334627E 19

Troubleshooting

Check the continuity of the RTD to verify proper resistance. If there is no continuity, the RTD has failed and needs to be replaced.

1.

Disable the applicator.

See

Before Beginning Repair, page 21 .

2.

Check resistance of the RTD using a multi-meter between the pins of the cordset connector. See connectors illustrations in cordset pin tables.

If working properly, the cutoff will trip at 500° F (260°

C) and rest at 420° F (216° C). If failure is suspected, allow the applicator to cool and then check the continuity of the thermal cutoff to verify it has not failed. If there is no continuity, the cutoff has failed and needs to be replaced.

1.

Disable the applicator.

See

Before Beginning Repair, page 21 .

2.

Remove cover plate.

3.

Check for continuity using a multi-meter between pin of cord set connector and the wire from the thermal cutoff that connects to the heater lead.

24W087,

24X039, or

24X760 Pt

100 (385)

RTD Cordset

24W088,

24X040, or

24X761 Ni

120 RTD

Cordset

D and E

3 and 5

107-115 ohms

130-140 ohms

3.

Replace the RTD if the resistance reading is outside the range, or if there is no continuity. See

Replace RTD, page 22 .

24W087, 24X039, or 24X760 Pt

100 (385) RTD Cordset

24W088, 24X040, or 24X761 Ni

120 RTD Cordset

A

1

20 334627E

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