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

Page: 31 / 44

Commissioning
APEX / SILAS
Pressurized Cabinet
Page 28 of 40 01-3704_7D0001_Manual_APC-SPC_20200617_jrs_en.docx Rev.-
7 Commissioning
Initial commissioning
Before the APEX (SILAS) pressurized cabinet is put into operation, a first test
must be performed.
See IEC/EN 60079-14 for the first test.
Putting into operation
The APEX (SILAS) pressurized cabinet has an automatically functioning Ex p
control unit. This means that after applying the supply voltage and activating
the purging gas supply, the system automatically starts the operation of the Ex
p phases.
Type 0(A)7-3704-1***/**** (gas/dust)
To put the APEX (SILAS) pressurized cabinet into operation, proceed as follows:
-
Dust the enclosure
-
Make sure that the operating pressure of the purging gas for the
pressurized encapsulation is set at the pressure reducer station to the
pressure specified on the type plate.
-
Make sure that the discharged purging air at the pressure monitor outlet is
discharged into a safe zone.
-
Close and lock the main door of the APEX (SILAS) pressurized cabinet.
An overpressure is then built up in the pressurized enclosure due to the
inflowing purging gas.
As soon as the inner pressure exceeds the set minimum limit, the purging time
starts to count down. After expiry of the purging time, the internally protected
assemblies and components are switched on as follows:

APEX pressurized cabinet, type “pxb“: the internal fitted components are
automatically switched on.

APEX (SILAS) pressurized cabinet, type “pyb“ and “pzc“: the internal
components are either switched on automatically or manually by the
operator.
The APEX (SILAS) pressurized cabinet is ready for operation from this point in
time.