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Idiomas disponibles
Idiomas disponibles
VFT 250 (01)
O
F
E
F
F
W
1
Installation (pictures
to
)
For operating and installation follow any relevant national standards that are in operation.
1.Vacuum connection at (A).
The air handled can be exhausted into the atmosphere through the exhaust port (B) or on models VFT 140-500 (07) by directing the air through
the spiral housing (W
).
2
Long and/or small bore pipework should be avoided as this tends to reduce the capacity of the pump.
2. The electrical data can be found on the data plate (N) or the motor data plate. The motors correspond to DIN/VDE 0530 and have IP 54
protection and insulation class B or F. The connection diagram can be found in the terminal box on the motor (unless a special plug connection
is fitted). Check the electrical data of the motor for compatibility with your available supply (voltage, frequency, permissible current etc.).
3. Connect the motor via a motor starter. It is advisable to use thermal overload motor starters to protect the motor and wiring. All cabling used
on starters should be secured with good quality cable clamps.
We recommend that motor starters should be used that are fitted with a time delayed trip resulting from running beyond the amperage setting.
When the unit is started cold, overamperage may occur for a short time.
The electrical installation may only be made by a qualified electrician under the observance of EN 60204. The main switch must
be provided by the operator.
Initial Operation (pictures
1. Initially switch the pump on and off for a few seconds to check the direction of rotation against the direction arrow (O).
Note: On this initial start the suction pipework should not be connected. If the pump runs backwards with the pipework connected
a pressure could build up within the housing which could result in damaged rotor blades.
2. Connect the suction pipe at (A).
For pipe work longer than 3 m we recommend using non-return-valves (ZRK), to avoid reverse rotation when the units are switched
off.
3. Vacuum regulating valve (optional extra):
The vacuum can be adjusted by turning the regulating valve (C) according to the symbols on the top of the regulating valve.
Potential risks for operating personnel
Noise Emission: The worst noise levels considering direction and intensity (sound power), measured according to DIN 45635 part 3 (as per
3. GSGV), are shown in the table at the back. When working permanently in the vicinity of an operating pump we recommend wearing ear
protection to avoid any damage to hearing.
VFT 250 (01)
Q
c
a
Q
e
L
M
N
F
A
E
S
to
)
Q
P
Q
T
VFT 250 (07)
F
B
E
E
F
L
W
2
VFT 250 (07)
c
a
Q
B
F
O
L
M
F
A
S
Q
Q
e
Q
T
N
E
E
L
P
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