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Operating Instructions
Side channel compressors
N
F
E
E
Pump ranges
These operating instructions concern the following multi-stage side channel vacuum pumps: SMD 160, SMD 300 and
SMD 500.
All models have capacities of 180, 300 and 470 m
on the data plate (N). The pumping curves showing capacity against pressure, can be found in data sheet D 661.
Description
All SMD models work according to the dynamic compression principle utilising non-contact rotating impellors. All
vacuum air is filtered by a built in micro fine filter. The compressor is enclosed in a sound box. The cooling of the
compressor takes place over the coupling fan. The fresh cool air (E) is sucked in from underneath the COVAC and the
warm air is exhausted through the vents (F).
All the compressors are driven by a direct flanged three phase, standard TEFV motor via a pin and bush coupling.
Pressure can be adjusted to the required levels, however, they are limited to a maximum point (see regulating valve (D)).
A manometer (Y) shows continuously the current pressure range.
Optional extras: As required, non-return valve (ZRK), dust inlet filter (ZFP), suction filter (ZAF) and motor starter (ZMS).
Suitability
The units SMD 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.
The SMD units produce pressure up to the maximum limits, which are shown at the data plate (N). They may be operated
continuously.
The COVAC is suitable for use with air of a relative humidity up to 90 % but not aggressive gases.
Dangerous mixtures (i.e. flammable 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.
The ambient and suction temperatures must be between 5 and 40° C. For temperatures outside this range
please contact your supplier.
The standard versions may not be used in hazardous areas. Special versions with Ex-proof motors can be supplied.
For all applications where an unplanned shut down of the compressor could cause possible harm to
persons or installations, the corresponding safety backup system must be installed.
Y
E
D
3
/hr operating on 50 cycles. The pressure limits (bar) are indicated
F
B
F
E
Q
T
SMD
SMD 160
O
SMD 300
SMD 500
E
BE 661
1.11.2000
Werner Rietschle
GmbH + Co. KG
Postfach 1260
79642 SCHOPFHEIM
GERMANY
0 76 22 / 3 92-0
Fax 0 76 22 / 39 23 00
E-Mail: info@rietschle.com
http://www.rietschle.com
Rietschle (UK) Ltd.
Bellingham Way
NEW HYTHE
KENT ME20 6XS
UNITED KINGDOM
0 16 22 / 71 68 16
Fax 0 16 22 / 71 51 15
E-Mail: info@rietschle.co.uk
http://www.rietschle.co.uk
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