Despatch 926E Equipment Manual (C-155)Rev 2/11 - Manual (Page 22)

17
The ice filter eliminates ice crystals and prevents them from freezing up valves or
intruding into the test chamber. The ice filter should be cleaned periodically by a
reverse purge using dry nitrogen. Install the LN
2
cylinder as follows.
1.
Turn off POWER switch and disconnect AC power.
2.
Position the cylinder in a safe and convenient location.
3.
Connect the cylinder to the test chamber as indicated. The large foam insulation
sleeves (item 3) are pushed over the fitting after the connections have been
made.
4.
Use a second wrench to prevent the bulkhead fitting from turning when the
connection is being tightened.
WARNING: WARNING: Store and use liquid nitrogen
only in a well-ventilated area.