CAUTION: Hot glue will leak out as the fitting is
removed.
Pump Block Filter Cleaning
NOTE: This procedure need not be done if flow rates are adequate
and no char is present in system.
1. Switch Off the pump motor switch.
2. Depressurize the system by activating the head until glue stops
flowing.
3. Using 9/16 hex wrench, remove plug [1] from the end of the
pump block [5] at the back of the unit.
4. Using needle nose pliers, remove the spring [2], thimble [3]
and filter element [4].
5. Temporarily replace plug to prevent hot melt drainage.
6. Clean filter element or replace as required.
7. Reinstall spring, thimble and filter element as removed.
8. Reinstall plug.
!
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2
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4
5
2000173a
© Copyright Astro Packaging 2009 KB30, KB50 and KB100 Series Hot Melt Units 19600-159 Rev. A 04/09/09 27
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