Diaphragm liquid pump NF 300
Installation and connection
KNF Flodos BA_NF300_EN_08_068697.docx
Translated from the Original Operating and Installation Instructions
15
Connecting the pump
Make sure that the power supply data match the data on the
motor type plate. The current consumption can be found on the
type plate.
Connect the motor cables. Electrical data Chapter 4.
Always check polarity of cables.
For DC motors:
red motor cable: +
black motor cable: -
In the case of brushless DC motors:
incorrect polarity may damage the electronics!
If using AC motors, the power supply must not deviate more
than a maximum of +/- 10 % from the specifications on the
type plate.
In order to ensure that emissions comply with the EN 55014 - 1
emission standard, this pump type with a brushless DC motor DCB
must be fitted with an additional circuit. The additional circuit must
be installed as closely as possible to the motor.
The additional circuit must be installed according to the following
wiring diagram and its defined components in order to achieve the
required level of attenuation.
Fig. 10: Additional circuit
6.3. Hydraulic connection
➔
Only connect components to the pump that are designed to
handle the hydraulic data of the pump (see Chapter 4, Tech-
nical data).
➔
Only use hoses that are suitable for the maximum operating
pressure of the pump (see Chapter 4).
➔
Only use hoses that are chemically resistant to the liquids
being pumped.
Additional circuit for
brushless DCB motors
C1: Condenser
≥ 2200 µF / UN = 12 V
≥ 1000 µF / UN = 24 V
Connected
components
Hoses
