5
04.06.2019
chem-proof Ex roof fan
SPARK-CHEM/Ex
Fig. No.2
– Dimensional drawing of the fans type SPARK-CHEM/Ex
Table No.2
– Dimensions of the fans type SPARK-CHEM/Ex
Type of the fan
D
D
0
A
H
n
Ø
[mm]
[mm]
[mm]
[mm]
[mm]
[mm]
SPARK-CHEM-160/1500/Ex
160
184
420
429
8
7
SPARK-CHEM-200/1500/Ex
200
224
476
471
8
7
SPARK-CHEM-250/1500/Ex
250
274
550
523
8
7
SPARK-CHEM-315/1500/Ex
315
339
660
622
8
7
5. Structure and Function
Structure of the fan
is illustrated on Fig. No.3. The subsequent constructional elements of the
fan
(except the impeller)
are of antistatic plastic
(PE EL)
.
The
impeller is made of stainless steel,
therefore it is possible to forward
the
chemically aggressive
and
flammable gases and vapours
as a
mixture
with the air.
In the course
of constructing
there were selected materials
that pre-
vents from ignition caused by hot surfaces or sparks caused by friction between the rotary ele-
ments of the fan
(constructional safety “
c
”).
