The Advanced
®
Osmometer Model 3320 Service Manual
6. Inspect the impactor for excessive wear
(see photo examples).
7. Clean the smaller diameter tip of the sole-
noid plunger with a 70% isopropanol
solution. Do not use any abrasive for this
cleaning procedure.
8. Dampen the wooden end of a cotton-
tipped applicator with a 70% isopropanol
solution, and insert it through the solenoid
body into the smaller diameter plunger
hole until it reaches the chamber cleaner.
Move the applicator in and out to scrub
the sides of the hole.
9. Return the cleaned solenoid plunger,
including spring, retainer and any wash-
ers, to the solenoid body. Secure the
retainer and remove the chamber cleaner.
10. Replace the solenoid cover, restore power
and recalibrate, if necessary.
If you have difficulty or if the instrument
does not function properly, please obtain Hot-
Line service by calling 800-225-4034 (toll-
free within the USA and Canada) or (+US)
781-320-9000 (elsewhere), 24-hour service
extension 2191.
32
No black deposits
on shaft
No filings present
Black deposits on
shaft
Filings present
Plating even, bright
and shiny
Plating uneven with
a dull, hammered
appearance
Impactor with Substantial Wear
Impactor with No Visible Wear
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