Mode Of Operation; Explosive Enviroments; Type Code; Nameplate - Biral FEX Serie Montage- Und Betriebsanleitung

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3.1.4 Mode of operation

The motors are designed for continuous immersed
operation S1 with a maximum of 15 switching operations
per hour. It is recommended to set up the system for S3
intermittent operation.
The motors in the waste water and sewage pumps
are designed for S3 intermittent operation,
consisting of intervals of 10 minutes. In other words,
the percentage stated (see «Technical data») divided
by 10 gives the permissible running time per interval.
Example: S3 = 25% = 2.5 minutes operation
and 7.5 minutes standstill according to IEC 34-1/
CEI 2.3.
The product description for the FSX is to be found
in appendix FSX 50.
The maximum starting frequency per hour
with a flooded motor is given in the «Technical data».
Warning
Modes of operation, which exceed
the performance limits stated
on the nameplate or given in the
«Technical data», are not permitted.

3.1.5 Explosive enviroments

For operation of the pumps
in explosive enviroments only models
with explosion-proof motors
(Ex model) must be used.
For each individual installation
the explosion classification (Ex-class)
of the pump must be approved
by the local authorities.

3.2 Type code

Series
Pressure branch dimensions in [DN]
Impeller rated diameter [mm]
Number of motor poles
(2 = 2900 1 /min, 4 = 1450 1 /min, 6 = 960
Motor power P2 (026 = 2,6 kW)

3.3 Nameplate

Fig. 3

3.4 Purpose of use

FEX, FWX, FMX and FSX pumps are suitable for
feeding clear and dirty water, waste water and sewage
with short fibre (FWX also long-fibre) solid foreign
matter and sludge with organic materials.
3.5

Application limits

3.5.1 General

Warning
Pumps of standard design are
not suitable for feeding liquids
intended for foodstuffs, or for pumping
flammable or explosive liquids,
or for installation in places subject
to explosion.
ATEX pumps of protected and tested
design are available for applications
of this kind.
Detailed information is available
from Biral AG.
Not applicable to ATEX pumps!
FWX 80 - 230 / 4 026
1 /min)
Fig. 2
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