The Advanced
®
Osmometer Model 3320 Service Manual
31
This cleaning procedure should be used if you
suspect that your samples are not freezing
properly because the solenoid impactor can-
not move freely due to the accumulation of
sample residue within the freezing chamber.
1. Remove the power cord from the rear of
instrument.
2. Loosen the screw (A) holding the sole-
noid cover on the instrument and remove
the cover.
3. Place a dry chamber cleaner in the cool-
ing chamber.
4. Locate the solenoid retainer (B) and
loosen both screws (C). Remove the
retainer.
5. Withdraw the solenoid plunger (D) while
leaving the solenoid body (E) in place.
Care must be taken when removing the
solenoid plunger to not lose the spring,
spring retainer, or plastic washer (if pres-
ent).
Solenoid Cleaning Procedure
D
C
E
B
A
washer
spring retainer
spring
Impactor
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