Idiomas disponibles
Idiomas disponibles
Operating Instructions
Compressors
O
DFT 80 (02)
F
F
E
F
F
W
1
Pump Ranges
These operating instructions concern the following dry running rotary vane compressors: Models DFT 25 to DFT 500.
Version (02)
cooling air exits through slots on the fan housing
Version (09)
cooling air exits out of the spiral housing
Version (19)
cooling air exits through the compressed air aftercooler see pictures
They have nominal capacities of 25, 40, 60, 80, 100, 140, 180, 250, 340 and 500 m
pressure limits (bar) are indicated on the data plate (N). The pumping curves showing capacity against pressure can
be found in data sheets:
D 340
DFT 25 - DFT 100 (02)
D 341
DFT 25 - DFT 100 (09)
Description
All models are complete with an inlet silencer and a threaded connection on the exhaust. All the air handled is filtered
by a built-in micro-fine filter.
A high efficiency cooling fan, that pulls air in, is situated between the pump housing and the motor. On version (02) the
fan is located in a fan housing (see pictures
(W
). On version (09) the fan is located in a spiral housing (see pictures
1
(F) can be directed either upwards or to the side depending on the position of the spiral housing (W
to connect ducting to the spiral housing so that the cooling air (F) can be transported away from the unit. In addition
version (19) has a compressed air aftercooler (T
All the compressors are driven by a direct flanged three phase, standard TEFV motor via a pin and bush coupling.
Optional extras: As required, non return valve (ZRK), suction filter (ZAF), motor starter (ZMS), star delta starter (ZSG),
unloading valve (ZAE) and various pressure gauges.
Suitability
The units DFT 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 DFT compressors produce compressed air up to the maximum limits as shown on the data plate (N). They can be
operated continuously.
The ambient and suction temperatures must be between 5 and 40° C. For temperatures outside this range
please contact your supplier.
These dry running compressors are suitable for use with air of a relative humidity of 30 to 90 %.
Dangerous mixtures (i.e. inflammable or explosive gases or vapours), extremely humid air, water vapour,
aggressive gases or traces of oil and grease must not be handled.
The standard versions may not be used in hazardous areas. Special versions with Ex-proof motors can be supplied.
All applications where an unplanned shut down of the compressor could possibly cause harm to persons
or installations, then the corresponding safety backup system must be installed.
Handling and Setting up
Compressors that have reached operating temperature may have a surface temperature at position (Q) of
more than 70° C. WARNING! Do Not Touch. (see pictures
The filter housing (S), exhaust box (T), housing cover (b) and greasing points (L) must all be easily accessible. For
maintenance purposes we recommend a space of 0.4 m in front of the filter housing and housing cover. The cooling air
entries (E) and the cooling air exits (F) must have a minimum distance of 20 cm from any obstruction. The discharged
cooling air must not be recirculated. If the cooling air exits from the spiral housing (W
taken so that the passage of air is not obscured (see pictures
The DFT compressors can only be operated reliably if they are installed horizontally.
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.
Installed on a solid base these compressors may be installed without fixing down. If the compressors are installed on
a base plate we would recommend fitting anti-vibration mounts. This range of compressors are almost vibration free in
operation.
D
L
M
N
DFT 80 (09)
B
E
A
E
S
L
D 342
DFT 140 - DFT 500 (02)
D 343
DFT 140 - DFT 500 (09)
and
). The heated cooling air (F) is totally directed out of the fan housing
) through which the air is directed after the spiral housing.
1
O
L
F
F
F
W
S
2
see pictures
and
see pictures
and
3
/hr operating on 50 cycles. The
and
). In this case the heated cooling air
and
)
) via ducting, then care should be
2
to
).
DFT
DFT 25
DFT 40
M
N
D
DFT 60
B
DFT 80
DFT 100
DFT 140
A
DFT 180
DFT 250
DFT 340
E
DFT 500
L
). It is also possible
2
BE 340
1.3.98
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: [email protected]
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: [email protected]
http://www.rietschle.co.uk
