Diaphragm pump N680 EX
Installation and connection
Translation of Original Operation and Installation Instruction, english, KNF 325438 02/22
23
7.3 Pneumatic connection
CAUTION
Personal injury or property damage through
ejected plugs
If not removed, the plugs on the pressure side of
the pump can be ejected during operation by the
resulting overpressure.
à
Remove the plugs during installation.
à
Wear appropriate personal protective equip-
ment.
Connected components
à
Only connect components to the pump that are designed for the pneu-
matic data and thermal requirements of the pump. (see Chapter
Pressure relief device
à
Protect the compressors by means of a pressure relief device between
the pressure-side connections of the compressor and the first shut-off
valve.
WARNING
Risk of explosion during pressure limitation result-
ing from the medium mixing with the environment
à
Make certain that there is no risk of explosion
posed by the medium mixing with the envi-
ronment.
Pump discharge
à
If the pump is used as a vacuum pump, safely (with respect to medium
and noise) drain the hot pump discharge that may, under certain cir-
cumstances, occur at the pneumatic outlet of the pump.
Decoupling
à
KNF recommends mechanically decoupling the pump from the pipe
system, e.g., through the use of flexible hoses or pipes. In this way it is
possible to prevent the transfer of possible pump vibrations and noises
to the system.
Connecting the pump
A marking on the pump head indicates the flow direction.
CAUTION
Risk of injury from mixing up suction side and
pressure side
Mixing up the suction side and pressure side can
result in breakage of connected components on
the suction side and pressure side.
à
Observe the marking of inlet and outlet on
the pump head.
1. Remove the protective plugs from the gas connection threads.
2. Connect the suction line and the pressure line (for mounting dimen-
).
3. Lay the suction line and the pressure line at a downward angle to pre-
vent condensate from running into the pump.
