KNF N 813.3 AN.29DC-B, Translation Of Original Operating And Installation Instructions

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Diaphragm Vacuum Pumps N 813 Installation and connection
Translation of original Operating and Installation Instructions, english, KNF 121240-121506 09/19 19
6.2. Electrical connections
GEFAHR
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.
➔
For pumps with AC motor:
The motors of the pump must be protected according to EN
60204-1 (protection against excess current, or overloading).
➔
For operating current see type plate.
➔ 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.
Pumps with AC motor
1. Make sure that the power supply data match the data on the
pump type plate.
The voltage must not vary by more than + 10% and - 10% from
that shown on the type-plate.
2. Connect earth (ground) wire to the motor.
3. Connect motor wires.
Pumps with brushless DC motor
1. Make sure that the power supply data match the data on the
pump type plate.
The voltage must not vary by more than + 10% and - 10% from
that shown on the type-plate.
2. Electrical connect of the pump according to Fig. 12, page 20.
Note the proper polarity (see marking on the motor). Incorrect
lead connection will damage electronics of brushless dc motors
(type designation ending with B). The supply wires have in-
verse-polarity protection on the motor board for this purpose,
while the control-voltage wires do not have this protection
function.