ITW Dynatec
D15/D25/D45 V6 DC L ASU Manual #20-63
Maintenance Page 6-3
Revised 10/14
Primary Filter Cleaning
See the illustration below for location of the primary filter.
1. Pump all the adhesive out of the hopper.
2. Lower the temperature of the application system to the adhesive’s softening point.
3. Remove the access cover via two slide latches. Do not pull out the ground wire attached.
4. Wearing gloves, unscrew the filter retaining nut with a 32 wrench and pull the primary filter out.
5. Immerse the clogged filter in flushing fluid (PN L15653) to loosen contaminants. Remove
filter from fluid and use a hot air gun ( if necessary) and rags to clean all contaminants from the fil-
ter. (If filter cannot be cleaned, replace the filter).
6. Apply a coat of anti-seize compound onto the threads of the filter retaining nut before re-insert-
ingintotheASU.
7. When re-installing the filter assembly, turn the filter’s cut out hole toward the pump. Align the
filter shutoff knob in its “open”, vertical position (as shown in the diagram).
Note: the filter shutoff knob is closed when it is positioned horizontally.
8. Replace the access cover and restore the ASU to normal operation.
WARNING HOT SURFACE
The ASU will still be hot when this procedure is being done. Use insulated
gloves and protective clothing when removing t he primary filter.
Primary Filter
Access Cover
Filter Shutoff Knob
O-ring
PN 610704
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