Labconco Type C1 Biosafety Cabinet Models 30468 - Manual (Page 97)

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Sash
Operation
The Axiom sash uses a deadweight-counterbalanced system. The system
consists of two separate weights on either side of the liner. Both weights are
synchronized by a locked axle-pulley system, so that both weights must move
together, preventing the sash from racking.
Adjustment
There are no adjustments for the width of the sash track. There should be
approximately 1/8-inch lateral play of the sash in its track. If there is no lateral
play, examine one or both of the corner posts to ensure that they are not bent
inward. If the sash becomes racked, or is closing unevenly, it can be aligned as
follows:
1. Close the sash completely, until the lower edge of the sash is contacting
the sash stop. If the other end of the sash is not resting on its sash stop,
CAREFULLY lift the counterweight on the “high” side of the sash. This will
allow the high side of the sash to lower to the sash stop, leveling the
sash. See Figure 6-5.
Figure 6-5
Using pliers to lift a sash
weight to level the sash.
CAUTION: Exercise
caution when lifting a
counterweight. There is
a pinch potential
between the sash cable
and pulley.