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

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Connections
APEX / SILAS
Pressurized Cabinet
Page 26 of 40 01-3704_7D0001_Manual_APC-SPC_20200617_jrs_en.docx Rev.-
Purging gas connection
IF THE PURGING GAS SUPPLY IS DIMENSIONED INADEQUATELY,
FAULTS IN THE PURGING PHASE ARE TO BE EXPECTED.

Adjust the internal diameter of the purging gas supply to
the purging flow required.
Depending on protected volume, a pressure reducer of the size G ¼“ or G ½“ is
connected to the APEX (SILAS) pressurized cabinet. The supplied purging gas is
to be connected to it. The remaining connections are preinstalled.
The supply line must have a sufficiently large diameter to provide the requisite
volume of purging gas for purging.
Ex p volume Connection size Pressure Supply line
< 50 litres G ¼“ 2 bar 8 mm
50 to 300 litres G ¼“ 2 bar 8 mm
300 to 700 litres G ½“ 2 bar 12 mm
700 to 1,000 litres G ½“ 3 bar 16 mm
> 1,000 litres to 1,500 litres
*
G ½“ 3 bar 25 mm
*) for Ex p volumes > 1,500 litres, inlet and outlet purging gas are to be dimensioned according to the
application.
Purging gas discharge with the gas / dust version
DANGER
FAILURE TO DISCHARGE PURGING GAS INTO A SAFE ZONE IN THE CASE OF
GAS / DUST APPLICATIONS
Danger of explosion from whirled up dust!

Discharge of the purging gas into a safe zone.
At the pressure switch outlet there is an M 36 female thread which serves to
connect a pipe system for the discharge of the purge gas into a safe zone.
This is connected to APEX pressurized cabinet, type 07-3704-1***/*** or SILAS
pressurized cabinet of type, A7-3704-1***/****.