6
chem-proof Ex roof fan
SPARK-CHEM/Ex
04.06.2019
Fig. No.3
– Structure of the fans type SPARK-CHEM/Ex
To the impeller
is fastened a cast iron hub. The hub along with the impeller is mounted at the
motor journal. The motor
(in Ex execution)
is installed
on a supporting plate. The supporting
plate is formed of
antistatic plastic (PE EL)
and is of
round shape
with the bent outwards flange.
The supporting plate is connected with the fan base by means of spacing bushes.
Both, the base and the spacing bushes are
of
antistatic
plastic
(PE EL). To the supporting plate
is fixed the spherical hood of antistatic plastic (PE EL)
to protect the motor from weather con-
ditions.
The fan is surrounded with a circumferential
protective steel wire grid
that
prevents
from
contact
with rotary elements of the fan. To the
fan base is welded
up an inlet confusor of antistatic plastic
(PE EL).
The
fan inlet is protected with
perforated plate
that no external objects / debris would
not get into the impeller space.
On demand we deliver
isolating switches
(safety switches)
to cut off the power supply during the
installing- and servicing activities (see cata
logue card “Electrical Accessories”).
6. Assembly and Start-up
Prior to installing examine the delivered
fan
for
damages
and
impurities occurred
during
the
tran
-
sport.
The device is designed for work outside the industrial rooms. Manufacturer suggest its
installing on a roof base (delivery on separate order).
The roof base must be constructed
exclusively of metal or
of a material that
do not conduct elec-
trostatic charges. It is important to provide grounding for the fan.
Before the connection to the
power
supply
, make sure whether the
parameters
of
the
exis
-
ting electrical installation are in uniformity with the data on the nominal
plate. In case of
inconsistency the connection cannot be executed
.
User
who
executed the installing is responsible for the complete observing of the reso-
lution of the EN ISO 13857 standard
.