KNF N 811, Перевод оригинальных инструкций по эксплуатации и установке

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Operation Diaphragm vacuum pump N 89/N 811/N 814/N 815
22 Translation of original Operating and Installation Instructions, english, KNF 121242-121509 04/20
Excessive pressure (with all of the related hazards) can be
prevented by placing a bypass line with a pressure-relief valve
between the pressure and suctions sides of the pump. For
further information, contact our technical adviser (contact data:
see www.knf.com).
For pumps with a thermal switch:
WARNING
Automatic starting can cause personal injury and
pump damage
When the operation of the pump is interrupted by the
thermal switch, the pump will restart automatically
after cooling down.

Take all necessary care to prevent this leading
to a dangerous situation.
Project-specific pumps that are not fitted with a thermal switch
must be protected by the user against the risk of overheating.

With the pump at a standstill, open pressure and suction lines
to normal atmospheric pressure.
The pump may not start up against pressure or vacuum during
switch-on. This also applies in operating following a brief power
failure. If a pump starts against pressure or vacuum, it may
block. This activates the thermal switch (1~ motor), and the
pump switches off.

Make sure that normal atmospheric pressure is present in the
lines during switch-on.
The life of the diaphragm is prolonged the formation of condensate
is avoided. Therefore the following precautions should be taken:

Run the pump for a few minutes to warm it up before handling
saturated or nearly saturated vapors.

KNF recommends: When transferring aggressive media, flush
the pump prior to switch off (see Chapter 8.2.1) to increase the
service life of the diaphragm.

Restore the system to normal atmospheric pressure (release
pneumatic pressure in pump).
Pump standstill
Vapors as media
Switching off the pump /
removing from operation