3-phase TEFV induction motors ATEX GAS - Zones 1 & 2

H2.2 - VIBRATION
SENSOR ADAPTATION
On request, our motors can be fitted with
tapped holes (for SPM type sensor) on
faceplates, to take the vibration sensors (not
supplied).
The adaptors form a connection with the
snap-on transmitter.
H2.3 - DRAINING
CONDENSATION WATER
To drain off any moisture that may have
accumulated inside during cooling of the
machine, drain holes are provided at the
lowest points of the enclosure, depending on
the operating position (IM etc). The holes
may be sealed in various ways:
- standard: with plugs
- on request: with screws or siphon
Opening the holes periodically should be
part of the regular maintenance procedure.
Being specially designed for harsh
environments, they are fitted with a PVC seal
after undergoing the following surface
treatments:
1 - zinc: 15 μm Zn
2 - silver for very corrosive environments:
2 μm Cu + 30 μm Ag
H2.4 - TAPPED HOLES FOR
POSITIONING
Tapped holes for positioning can be made on
the motor feet in order to make it easier to
adjust and align the motor.
They have a metric thread which can also be
created to suit another standard diameter on
request.
H2.5 - RADIAL SEAL
When a motor needs to be mounted in the
vertical position, shaft end facing up (position
IM 1031, 2031 and 3031 for example) and its
shaft end is not correctly protected by the driven
machine against rain or water splashes,
it is advisable to use an optional radial seal
on the drive end to avoid water getting into
the motor around the shaft.
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3-phase TEFV induction motors
ATEX GAS - Zones 1 & 2
Optional features
H2 - Mechanical options
Frame size
Non-sparking
LSN/FLSN
Increased safety
LSE/FLSE
Flameproof
FLSD
80 to 132 mm l l -
160 to 200 mm l l m
250 mm and above l l m
l available m please consult Leroy-Somer
Radial seal
Tapped holes for
positioning
Casing interior
Bearing housing
Bearing
Shaft