3–7
6. Open the process damper a bit. Wait ten minutes before checking the reactivation
outlet temperature again. If it is still above 120°F, open the process damper and
wait again. Continue doing this until you find the setting which causes the reactiva-
tion temperature to drop to 120°F. This is the correct setting for the process
damper.
7. When the process damper is set correctly, the temperature at the reactivation outlet
will be 120°F. Next, adjust the position of the
reactivation
damper. This will help
the unit to operate as efficiently as possible. Close the reactivation damper a bit,
and mark the damper setting. Wait ten minutes for the temperatures in the machine
to stabilize, then check the temperature at the reactivation outlet.
8. If the temperature remains at 120°F (±5°), close the reactivation damper a bit more,
and mark the new damper setting. At the point where the reactivation outlet tem-
perature drops below 115°F, the reactivation damper is closed too far. Reopen the
reactivation damper to the last setting.
Note – In some installations, the conditions of the process air entering the unit will
change frequently. In a case like this, it may be necessary to leave the reactivation
damper completely open. This will prevent nuisance overheating faults.
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