In some cases, it is desirable to manually operate the interchange. To do
so, depress the function switches to Manual for the desired duration and
sequence.
If, for any reason, the unit circuit board should malfunction, the unit can
still be operated manually by following these procedures.
Caution
From the Auto sequence cycle, do not turn more than one
function switch to Manual at a time, or leave the system unattended while
a function switch is in the Manual position. When operating any of the
function switches on Manual, make sure both the inner and outer doors
are securely closed. The inner door must be securely latched shut, not
simply closed.
s
1. Turn the Gas switch OFF, then ON. This will automatically transfer
cycle, during any function, back to the beginning of the program.
2. Put the Vacuum switch in the Manual position until the vacuum
gauge reads 20 inches. Then switch it back to the Auto position.
3. Put the Nitrogen switch in the Manual position until the vacuum
gauge drops to 2 inches. Then switch it back to the Auto position.
4. Repeat Steps 2 and 1.
5. Repeat Step 2 again, then switch the Equalize switch to Manual until
the vacuum drops to 0.
The interchange is now anaerobic. However, the Sequence Complete and
Sequence Not Complete indicating lights will not function correctly
because of Manual operation.
Operating the interchange manually has no effect on the glove chamber.
The glove chamber will always have a positive pressure of mixed gas to
maintain an anaerobic atmosphere.
Anaerobic System 1-11
Thermo Scientific
Section 1
Installation and Start-Up
Manual Operation of
the Interchange
