Reference: Use this instruction with replace-
ment part 3C2241R.
Tools Needed: Phillips screwdriver, flat-
bladed screwdriver, 5/64”
Allen wrench, probe align-
ment tool and instructions.
CAUTION: Improper connections may
cause damage to the instrument.
Instruction:
1. Turn off the power and unplug the instru-
ment.
2. Remove the two screws from the head
cover (A) and lift off the head cover.
3. Remove the two stir/freeze wire setscrews
(B) from the clapper.
4. Gently pull the stir/freeze wire (C) down
and out of the clapper.
5. Remove the two screws (D) that attach
the clapper to the yoke.
6. Replace the old clapper with the new one
and reassemble by reversing steps 2-5.
7. Use the probe alignment tool and instruc-
tions to properly position the probe and
stir/freeze wire.
Clapper Replacement
3C2241R
For additional information or technical assistance,
please contact Advanced Instruments Hot-Line
®
Service Center (U.S. 1-800-225-4034, outside
North America +US 1-781-320-9000).
3C2P241R Rev5
(4D35/3255 Service Manual)
Page 1 of 1
A
B
C
B
C
D
D
4250 / 4D3 Cryoscope
3250 / 3D3 Osmometer
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