Martin Christ Alpha 1-2 LDplus - Manual (Page 39)

Freeze-dryer Alpha 1-2 LDplus
6 Operation
Version 11/2006, Rev. 2.0 of 02/12/2014 • sb
39
Translation of the original operating manual
Status line (8)
The status line at the bottom of the screen indicates the current operating
state, active phase, and any pending information. The status line is visible
at all times.
13 Symbol of the
operating state
14 Active phase
15 Symbol of pending
information
Fig. 21: Status line
Operating state (13)
The freeze-dryer is in the standby mode. All of the various
units are switched off.
The freeze-dryer is in the run mode. The unit performs a
continuous run.
The freeze-dryer is in the run mode. The timer is activated.
Active phases (14)
Freezing The ice condenser is cooled.
Warm-up
VP The ice condenser is cooled and the vacuum pump is
activated while the pressure control valve is closed. If no
pressure control valve is integrated, the drying chamber
must be separated from the vacuum pump by way of a
manual valve or similar.
Main drying The drying chamber is evacuated while the ice condenser is
cooled. If a vacuum control system is included, the vacuum
is controlled based on the corresponding set value for the
main drying phase.
Final drying The final drying phase is only available if a vacuum control
system is included. It is possible to define different control
parameters (set vacuum, timer) for the main drying and final
drying phases.
Pending information (15)
The symbol flashes every second if there is pending
information concerning the process or the freeze-dryer (error
messages, process messages, or general information).
The information can be viewed under "Process & equipment
info" (see chapter 6.5.3.3 - "Process and equipment
information")
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