Diaphragm liquid pump NF 2.35
Operation
KNF Flodos AG BA_NF2-35_EN_02_164912
Translation of original Operating and Installation Instructions
14
Duty cycle / short cycle operation
KNF pumps are designed for continuous operation.
If the pump is operated with short cycles in your application,
please contact a KNF technical adviser for further information
(for contact details, see last page).
Switching on the pump
➔
In order to guarantee that the pump can start every time it is
advisable to reduce the counterpressure to an acceptable lev-
el. If you experience a brief power interruption, check for the
presence of pressure or vacuum before restarting.
For more specific information contact your KNF technical
adviser.
Switching off the pump
➔
KNF recommends: If transferring aggressive liquids, the pump
should be flushed thoroughly prior to switch off (see Chapter
8.2.1), as this will help to lengthen the service life of the dia-
phragm.
➔
Restore the system to normal atmospheric pressure (release
hydraulic pressure in pump).
Flow rate NF 2.35
Fig. 6: Flow rate of the pump NF 2.35 DCB-B / DCB-4B
Impulse operation
CAUTION
Overpressure on the suction side causes medi-
um to flow through the switched-off pump
➔
Take steps to ensure that this cannot produce a
hazardous situation.
