Maintenance
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4.3 Moisture trap replacing (furnace)
Fig. 10: Replacement of moisture trap
1. Turn both screws (1) counter clockwise, until the ring (3) touches the
part (2).
2. Lift the glass tube (5) upwards, tilt it to the side and pull downwards.
3. Replace the magnesium perchlorate (Anhydrone). See chapter
reagent tube replacing
4. Install the glass tube (5) in reverse order after greasing the lower O-
ring.
5. Turn both screws (1) clockwise until the O-ring (4) is properly pressed
on the inner surface of the glass tube (5).
Remark
The O-ring imprint on the whole circle length of the glass tube should be of about 2
mm width.
4.4 O-rings replacing
The O-rings are only replaced when they no longer adequately seal, due to severe
damage or aging. When removing the old O-rings, be sure that the sealing area of
the fittings is not damaged. Grooves where the old O-rings are installed must be
cleaned to be completely free of grease.
New O-rings should under no circumstances be greased before installing but only
after installation. Otherwise, the O-rings would turn with the glass tubes when
trying to remove them at a later stage.
It is recommended not to grease the upper O-ring of the moisture trap.
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