Rietschle Thomas SKG 160-2 Instrucciones De Uso página 6

Pump ranges
These operating instructions concern the following side channel vacuum pumps and compressors: SKG 160-2, SKG 180-2, SKG 200-2,
SKG 226-2, SKG 245-2, SKG 250-2, SKG 270-2, SKG 275-2, SKG 294-2, SKG 300-2, SKG 314-2, SKG 334-2 and SKG 410-2. The capacities at
atmosphere respectively are 36, 50, 80, 130, 170, 140, 250, 200, 340, 240, 420, 475, 1000 m
showing capacity against vacuum or pressure can be seen in data sheets D 510 and D 511 or D 610 and D 611.
Description
All SKG-2 models work according to the dynamic compressing principle utilising a non contact rotating impellor. They have a built-in motor. A high
efficiency double-flow impellor is fitted on to the motorshaft. Models up to SKG 314-2 (picture
2 and larger (picture ) have an additional cooling fan situated between the motor and blower housing.
Air inlet and outlets have built-in silencers with the addition of a mesh disc on the suction silencer to protect the unit from particles larger than 1.2 mm.
Both the Inlet and outlet have an inside connection thread corresponding to DIN ISO 228. All the parts are made from a special aluminium alloy
except for the motor rotor, stator and shaft.
Optional extras: As required, vacuum or pressure limiting valve, non-return valve, suction filter, motor starter, vacuum/pressure change over valve.
Special versions: anti corrosive internal coating, gas tight version (for installation in potentially explosive areas).
Suitability
The units SKG-2 are suitable for the use in the industrial field i.e. the protection equipments corresponds to EN DIN 294 table 4, for
people aged 14 and above.
SKG-2 models can be operated as vacuum pumps or compressors. They are suitable for use with air of a relative humidity up to 90 % but not
aggressive gases. Gas tight versions are available. The tightness of each unit depends on the shaft seal. The shaft seal lifetime relates directly to
the operating conditions.
Dangerous mixtures (i.e. inflammable or explosive gases or vapours), water vapour or aggressive gases must not be handled.
Handling of inflammable or aggressive gases and vapours is only possible with special versions, if the safety instructions XE 1 are
noted.
For installation in potentially explosive areas the safety instructions XE 10 must be followed.
The ambient and suction temperatures must be between 5 and 40° C. For temperatures outside this range please contact your supplier.
For less aggressive media an internal protection coating can be utilised.
The maximum permissible pressure difference for vacuum or pressure depends upon the motor rating. This is indicated on the data plate (N) and
is shown in the data sheet for standard voltages and frequency:
SKG 160-2, SKG 180-2, SKG 200-2, SKG 250-2, SKG 275-2, SKG 300-2 see data sheet D 510 or D 610
SKG 226-2, SKG 245-2, SKG 270-2, SKG 294-2, SKG 314-2, SKG 334-2 see data sheet D 511 or D 611
Operating above these pressure differences the motor would be overloaded. As well as considering the maximum allowable pressure difference,
the amperage should also be checked against the data plate (N).
The loading of each unit depends on the specific gravity of the gas handled. Therefore when handling gases other than air there are other pressure
different limits to be considered. Please contact the supplier for further advice.
If it is possible for the flow to be throttled more than the allowed limits, then the use of vacuum or pressure limitation valves (optional extras) should
be considered.
The standard versions may not be used in hazardous areas.
All applications where an unplanned shut down of the blower could possibly cause harm to persons or installations, then the
corresponding safety backup system must be installed.
Handling and Setting up (pictures
Pumps that have reached operating temperature may have a surface temperature at
position (Q) of more than 70° C. WARNING! Do Not Touch.
When installing the blower especially when the units are built-in, the cooling air entries (E) and the cooling
air exits (F) must have a minimum distance of 10 cm from any obstruction. The discharged cooling air must
not be recirculated.
The SKG-2 blowers can only be operated reliably if they are installed horizontally.
Vertical shaft position with the motor up is possible if this was specified in the original order and the unit
was subsequently tested in this configuration. The installation of SKG-2 models on a solid floor is possible
without bolting down. When fitting onto a framework we would recommend using anti-vibration mounts.
For installations that are higher than 1000 m above sea level there will be a loss in capacity.
For further advice please contact your supplier.
and )
3
/hr on 50 cycle operation. The performance curves
) use the motor fan for cooling. Models SKG 334-
The blower can be operated in 4 differ-
ent connection positions.
Standard version is position 02.