Swing Piston Pumps NPK 25
Installation and connection
Translation of original Operating and Installation Instructions, english, KNF 121581-121584 08/16
9
For pumps with AC motors:
WARNING
Hazard of injuries during operation
Take protective measures against touching parts
connected to electrical power (electrical connec-
tion).
Install the pump so that the motor fan can intake sufficient
cooling air.
Make sure that the installation location is dry and the pump is
protected against rain, splash, hose and drip water.
Install the pump at the highest point in the system to prevent
condensate from collecting in the pump head.
Protect the pump from dust.
Protect the pump from vibrations and jolts.
6.2. Electrical connection
For pumps with AC motor:
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.
For pumps with DC motor:
2.
Only have the pump connected by an authorized specialist.
3.
Only have the pump connected when the power supply is
disconnected.
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 motors KNF recommends that a fuse is
installed in the motor supply circuit (overcurrent release).
For operating current see type plate or data sheet.
Connecting pump
1.
Compare the supply data with the data on the motor-plate.
The voltage must not vary by more than + 10% and - 10%
from that shown on the type-plate.
2.
NPK 25 AC
Connect the mains cables to the connections L1 and N of the
pump motor.
Protection against touching
Cooling air supply
Installation location
