Bartec APEX (APC) 07-3704 Series, Operating Instructions Manual

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Operation
APEX / SILAS
Pressurized Cabinet
Page 30 of 40 01-3704_7D0001_Manual_APC-SPC_20200617_jrs_en.docx Rev.-
8 Operation
Operating phases of the APEX (SILAS) pressurized cabinet
The operation of the APEX (SILAS) pressurized cabinet can be divided into three
phases, which are preparatory, purging and operating phase.
Process diagram of the operating phases
The APEX (SILAS) pressurized cabinet is built in compliance with the currently
applicable guidelines and standards and fulfils the requirements specified
therein. The processes in the respective states are listed in the following.
Operating phase Requirements
Effects
Preparatory phase
-
Mains voltage connected
-
Build-up of internal pressure
-
Purging time set
-
Purging time has not yet
expired
Initiation of the purging
phase
Purging phase
(not applicable for dust)
-
Minimum pressure ok
-
Maximum pressure ok
-
Flow rate ok
Purging time is running
Operating phase
-
Purging time has expired
- Minimum pressure ok
-
Maximum pressure ok
Operation enabled
Preparatory phase
The preparatory phase begins when the supply voltage for the APEX (SILAS)
pressurized cabinet and the supply with purging gas is switched on. The
purging gas flows through the purging gas valve into the APEX (SILAS)
pressurized cabinet.
Preparatory phase sequence:
The influx of purging gas increases the internal pressure in the pressurized
enclosure.

The minimum pressure of the enclosure is exceeded.

The purging gas valve opens.

In the case of dust applications, the purging gas valve is replaced by the
adjustable needle valve.

The next phase, the “purging phase“ is initiated.