Hopper Filter Inspection And Cleaning - ITW Dynatec DYNAMINI Operation And Service Manual

Page 6-2
Revised 1/05
Hopper FIlter Inspection & Cleaning
The hopper filter is a coarse screen located in the bottom of the hopper. It fits over the hopper's
drain hole and prevents any large debris from leaving the hopper.
1. Pump all adhesive out of the ASU.
2. Open the hopper lid and inspect the hopper filter.
3. If cleaning the filter is necessary, lower the temperature of the hopper 20-30°C (35-50°F)
from operating temperature.
The ASU will still be hot during this procedure. Use insulated gloves and
protective clothing when handling the hopper filter.
4. Use a hook to pull the hopper filter out.
5. Emerse the clogged filter in flushing fluid (PN L15653),
then use a hot air gun and rags to clean it.
6. Re-insert the filter into the hopper.
7. Refill the hopper and resume production.
Purging the Filter Manifold of Adhesive and Pressure
As a safety precaution, purge the filter manifold before changing the output filter or before remov-
ing any of the hoses or applicators from their manifold port.
Refer to the illustration on page 6-1 while following these instructions.
HIGH PRESSURE
During the purging procedure, hot adhesive can come out of the manifold under
high pressure. Wear safety glasses, gloves and protective clothing. Stand clear
of the ASU until all pressure is relieved.
HOT ADHESIVE
Avoid splashing hot adhesive. Position a heat-resistant container under the
manifold's purge drain before proceeding.
1. The system should be at operating temperature. Turn the pump/ motor OFF.
2. With a hex key screwdriver (allen wrench), slowly loosen the purge screw (do not remove
it). Allow the adhesive and pressure to escape. All the adhesive will flow into the heat-
resistant container.
3. Re-tighten the purge screw.
WARNING HOT SURFACE
WARNING
ITW Dynatec c. 2004
DYNAMINI ASU Manual #20-25
Hopper
Filter