Martin Christ Beta 2-8 LSCplus - Manual (Page 67)

Beta 1-8 LSC&
Beta 2-8 LSC&
6 Operation
Version 04/2013, Rev. 1.1 of 16/12/2013 • sb
67
Translation of the original operating manual
• Periodic pressure increase test:
The test will be performed periodically during the entire main or final
drying phase. The parameters "Duration test" and "Time between tests"
apply. The maximum pressure increase is limited to 100%, referring to
the actual value at the beginning of the measurement. If the value is
exceeded, the pressure increase test will be aborted in order to prevent
the product from thawing.
• Progress condition:
In the last main drying or final drying section, two pressure increase
tests will be performed and evaluated. The start point will be calculated
automatically by the control system. The parameters "Duration test" and
"Time between tests" apply. If the values of both pressure increase tests
are not greater than the specified "Pressure increase" parameter, the
condition for switching to the next section is fulfilled and the next section
will be initiated. If the condition for switching to the next section is not
fulfilled, a process message will be issued, the current section will be
extended, and further pressure increase tests will be executed
periodically until the condition is fulfilled. If the actual value exceeds the
set value before the preselected time has elapsed, the test will be
aborted in order to prevent the product from thawing. If the value is
exceeded, the pressure increase test will be aborted in order to prevent
the product from thawing.
• Periodic & progress condition:
This variant is a combination of the possibilities that are described
above. The test will be performed periodically during the entire main or
final drying phase. The maximum pressure increase is limited to 100%,
referring to the actual value at the beginning of the measurement. If the
values of the last two pressure increase tests are not greater than the
specified "Pressure increase" parameter, the condition for switching to
the next section is fulfilled and the next section will be initiated. If the
condition for switching to the next section is not fulfilled, a process
message will be issued, the current section will be extended, and further
pressure increase tests will be executed periodically until the condition
is fulfilled.
• Disabled:
No pressure increase test will be executed during the main or final
drying phase. There will be no evaluation.
Fig. 63: Dialog box "Pressure increase test" in the program mode