Unger HCD25 - Manual (Page 8)

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Quick Start Guide
5. Use a small screw driver to take out the suc-
tion seal (22).
Beware:
not to damage the piston body with
the screw driver.
6. Toss out the seals you removed, they cannot
be re-used.
7. In order to assemble the piston seals, dip them
for 60 seconds in hot temperature (60 ºc/
140ºf) water. While still warm, insert them to
their carriers in the piston (2) using no other
means of energy than pressure created by
your own hands. Make sure that the seals are
stable in their career.
8. In order to assemble the ejector seal in it’s
carrier in the piston, apply force while sliding
in the seal, during the process the seal will
extend and shrink back to his carrier.
Make sure that the seal moves freely in it’s
carrier.