Flameless Explosion Venting Device
–
FLEX
4
35
1
1. INTRODUCTION
1.1 IDENTIFICAT ION OF THE OPER AT ING AND M AINTEN ANCE INSTRUCTIONS
This user manual is drawn up for the flameless explosion venting device - FLEX (hereinafter
referred to as FLEX) of the dimensional series F1 to F3, R1 to R4 and C1 to C5. The original
user manual containing the operating and maintenance instructions is drawn up in the Czech
language; other language versions are the translations of the original manual. If in any
doubts, the original wording of the manual shall be considered decisive.
The following documents concerning FLEX are also supplied with this manual.
✓
Delivery note
✓
EU Declaration of Conformity under 2014/34/EU
✓
FLEX control sheet
✓
Operation Log Book
The following can be supplied on request:
✓
Drawing of the connecting flanges
✓
The data sheet of the intrinsically safe relay (if included in the delivery)
1.2 FLEX CL ASSIFICAT ION
FLEX is designed in accordance with the European Directive 2014/34EU:
Table No. 1 - FLEX Classification
The electrical components (intrinsically safe relays) installed in FLEX must be certified
to the appropriate zone or category.
Equipment group
II
Explosive atmosphere
D
Equipment category, interior/exterior
1 D 3G / 3G D
Zone
Interior:
20, 21, 22
Exterior:
2, 22
