Installation and connection Diaphragm pump N85, N86
20 Translation of original Operating and Installation Instructions, english, KNF 121258-121528 01/20
7.2. Electrical connection
DANGER
Extreme danger from electrical shock
Only have the pump connected by an authorized
specialist.
Only have the pump connected when the power
supply is disconnected.
When connecting the device to a power source, the relevant
standards, directives, regulations, and technical standards
must be observed.
In the electrical installation, arrangements (complying with
EN 60335-1) must be made for disconnecting the pump motor
from the electrical supply.
It is recommended that an additional “Emergency Stop” switch
is installed.
The pump must be installed so that contact with live parts
(electrical connection) is impossible.
For pumps with AC motor:
The motors of the pump must be protected according to DIN
EN 60204-1 (protection against excess current, or overload-
ing).
For max. operating current of the pump see type plate.
For pumps with DC motor:
The pumps may only be operated in a SELV power circuit.
Fasten the connection cables so that:
the cables do not contact moving or hot parts.
the cables will not chafe or be damaged on sharp edges or
corners.
no pulling or pushing forces are exerted on the cable’s
connection points (strain relief).
Pumps with AC motor:
The pumps are
fitted as standard with a thermal switch to pro-
.
Pumps with AC motor
1. Compare the supply data with the data on the motor plate. For
maximum operating current of the pump see pump’s type
plate.
The voltage must not vary by more than + 10% and – 10%
from that shown on the type plate.
2. Connect the earth (ground) wire to the motor.
3. Connect motor wires.
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