ITW Dynatec
Chapter 5
Maintenance and Repair Notes
Page 30
Dyna
BFS Applicator, Rev.9.16
5.2 Cleaning the Applicator
ADVICE
Heed all security advices given in chapter 5.1.
MAINTENANCE
Check the Applicator regularly for dirt. Dirt can be caused e.g. by burned adhesive and
pile up at the supply part, application module or nozzle.
When cleaning, adhere to the actual safety data sheet of the manufacturer of the cleaner!
CAUTION
PUR-adhesives react with air humidity. To avoid blocked nozzles or Applicators, these
parts have to be protected airproof with PUR cleaner immediately after production stop or
the whole unit must be purged with PUR cleaner.
Nozzles could be protected e.g. with protection caps filled with PUR-cleaner, mounted
immediately after production stop.
Cleaning the Applicator from the adhesive residues:
1. Stop adhesive supply/ all motors.
2. Switch the unit voltage-free and pressureless! Refer to the Adhesive Supply Unit
manual.
3. Guard the unit against unauthorized restarting.
4. Place a heat-resistant catchment container/underlay under the Applicator. Hot
adhesive may come out!
5. Clean the Applicator from adhesive residues by using a wooden scraper or lint-free
cloth with thinner or cleaner.
CAUTION:
Do not damage the Applicator with sharp-edged or metallic objects or
tools.
After finishing the maintenance or repair works:
Remove all materials and tools used during the repair or maintenance from the
workspace of the unit.
Connect the voltage supply and the compressed air supply. Heat the unit up. Wait until
all temperatures are within the tolerances and the adhesive in the tank is molten
completely.
CAUTION
Before each start of production, purge the Applicator,
i.e. let the adhesive flow
out until the adhesive is clean and bubble free.
Thereafter switch off the adhesive and clean the nozzle from adhesive.
Continue production.
