Idiomas disponibles
Idiomas disponibles
Operating Instructions
Vacuum pumps
VFT 80 (01)
O
F
F
E
F
F
W
1
Pump ranges
These operating instructions concern the following dry running rotary vane vacuum pumps: Models VFT 25 to VFT 500.
Version (01)
cooling air exits through slots on the fan housing
Version (07)
cooling air exits out of the spiral housing
The vacuum capacities at atmosphere are 25, 40, 60, 80, 100, 140, 180, 250, 340 and 500 m
The pumping curves showing capacity against pressure can be found in data sheets:
D 157
VFT 25 - VFT 100 (01)
D 158
VFT 25 - VFT 100 (07)
D 167
VFT 140 - VFT 500 (01)
D 168
VFT 140 - VFT 500 (07)
Description
All models are complete with an inlet threaded connection and a silencer on the exhaust (except when the exhaust is
piped in to the spiral housing). 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 (01) the
fan is located in the fan housing (see pictures
housing (W
). On version (07) the fan is located in a spiral housing (see pictures
1
cooling air (F) can be directed either upwards or to the side depending on the position of the spiral housing (W
also possible to connect ducting to the spiral housing so that the cooling air (F) can be transported away from the unit.
All the pumps are driven by a direct flanged three phase, standard TEFV motor via a pin and bush coupling.
Optional extras: As required, vacuum regulating valve (ZRV), non return valve (ZRK), inlet dust filter (ZFP), vacuum
tight suction filter (ZVF), motor starter (ZMS), star delta starter (ZSG), unloading valve (ZAE) and various vacuum
gauges.
Suitability
The units VFT 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 VFT can be used for the evacuation of a closed system or for a permanent vacuum from 150 to 1000 mbar (abs.).
A maximum vacuum of 100 mbar (abs.) is possible on intermittent operation.
The ambient and suction temperatures must be between 5 and 40° C. For temperatures outside this range
please contact your supplier.
These dry running vacuum pumps 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 vacuum pump could possibly cause harm to
persons or installations, then the corresponding safety backup system must be installed.
Handling and Setting up
Pumps 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 VFT pumps 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 pumps may be installed without fixing down. If the pumps are installed on a base plate
we would recommend fitting anti-vibration mounts. This range of vacuum pumps are almost vibration free in operation.
L M N
VFT 80 (07)
B
E
A
E
E
S
L
and
). The heated cooling air (F) is totally directed out of the fan
and
O
L M N
F
F
F
W
S
2
see pictures
and
see pictures
and
3
/hr operating on 50 cycles.
and
). In this case the heated
)
) via ducting then care should be
2
to
)
VFT
VFT
25
VFT
40
VFT
60
VFT
80
B
VFT 100
A
E
VFT 140
VFT 180
VFT 250
VFT 340
E
VFT 500
L
). It is
2
BE 157
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
