15
GB
1. General
Each Lutz eccentric screw drum pump of series B70V-HD
comprises an universal-, a 3-phase- or a compressed air
motor and a pump tube.
The flow rate and delivery head depend on the selected pump
size. This means that the most appropriate pump can be chosen
for each individual application.
1.1 Scope of supply
The motor and pump tube of series B70V-HD are packed in two
separate cartons unless specified otherwise by the customer.
The packaging may also contain any accessories ordered.
It is therefore important to check that the consignment is
complete as ordered.
1.2 Year of construction
The year of construction of the appliance can be seen on the
field for the serial number. Here are attached to the serial
number the both last digits of the year of construction, e.g.
(-10 for the year 2010).
2. Motor types
The Lutz eccentric screw drum pump of series B70V-HD is
available in three different versions.
2.1 Drive units for type B70V-HD-D,
series 12.1 - 75.1
Three-phase drives
The pumps of series B70V-HD-D are driven by three-phase
motors. The following three-phase motors are available:
0.37, 0.55, 0.75, 1.1 and 1.5 kW, 700 or 900 1/min.,
230/400 V, 50 Hz, type of protection IP 54. Other types of
protection, voltages, motor ratings and speeds are available
on request.
Further information can be found in the operating instructions
for three-phase motors.
Compressed air drives
Compressed air motors of type 4 DA, 6 DA or 8 DA rated at
0.45, 1.0 or 1.7 kW for 6 bar and 900 1/min.
Operating pressure max. 7 bar, recommended speed 200-900
1/min., air consumption 55, 80 or 130 Nm³/h, air connection
thread 1/4" NPT or 1/2" NPT.
Further information can be found in the operating instructions
for compressed air motors.
Three-phase drives with frequency converter
To optimally adjust the volume flow and desired pumping head
of an eccentric screw drum pump, you can choose between
the following three-phase motors with attached frequency
converter: 0.55, 0.75, 1.1 and 1.5 kW.
More information can be found in the operating instructions
for three-phase motors.
High leakage current
A radio interference filter in the frequency converter
causes additional leakage current through the earth
conductor.
The earth leakage current can be between 3.5 and
11 mA depending on the clocking frequency.
2.2 Drive units for type B70V-HD-SR,
series 12.1 - 50.1
The following universal motors and compressed air motors are
available for this type:
- Universal motor MA II and MI 4
- Universal motor ME II - explosion proof
- Compressed air motors MD-1, 2 and 3
Further information can be found in the respective operating
instructions.
