Chapter 6
Troubleshooting
ITW Dynatec
Dyna BFS Applicator, Rev.9.16
Page 41
Chapter 6
Troubleshooting
ADVICES:
Please re-read all security advices given in Chapter 1 before troubleshooting.
All troubleshooting or repair procedures must be performed by qualified, trained
technicians.
The temperatures measured on the outer surface may deviate significantly from the
temperatures set and displayed. This can lead to a false conclusion (e.g. defective heating).
Such a difference is normal and depends also largely on the materials used.
In general:
If failure occurs, check first:
•
Check all the electrical and pneumatic connections.
•
Verify that the Applicator has sufficient compressed air and it is heating properly.
•
Verify that the main power switch of the Adhesive Supply Unit is ON.
•
Verify that the pump is functioning and the required adhesive pressure is present.
•
Verify that the temperature controller is in operation and that the setpoints are correct for
the Melter, Heated Hoses, Applicator and all other components connected to the unit.
Problem
Possible Cause
Solution
Module does not open.
1. Temperature adjustment
of hopper, hose or
applicator is too low.
2. Solenoid defective.
3. Compressed air for
Applicator is too low.
4. Standby activated.
1. Check temperature
adjustment.
2. Check solenoid.
3. Check compressed air; this
should be 6 bar.
4. Deactivate standby.
No adhesive flowing out of
module.
1. Nozzle is clogged.
2. Filter element is dirty.
3. Module defective.
4. ASU’s hopper is empty.
5. Adhesive is too cold.
6. Solenoid valve is not
opening.
1. Clean or replace nozzle.
2. Clean or replace filter.
3. Replace module.
4. Re-fill hopper.
5. Check temperature settings.
6. Check solenoid valve.
Adhesive is coming out of the
module’s “weep” holes.
1. Module seals are
damaged.
1. Check seals and replace
module if necessary.
Applicator does not reach
operating temperature.
1. Temperature settings
wrong.
2. Heater cartridge defective.
3. Temperature sensor
defective.
1. Reset temperature settings.
2. Check heater cartridge and
replace if necessary.
3. Check temperature settings
and replace if necessary.
Applicator is too hot
1. Temperature setpoint is
too high.
2. Temperature sensor
defective.
3. Controller defective.
1. Check temperature settings
and reset if necessary.
2. Check temperature settings
and replace if necessary.
3. Replace controller.