Diaphragm pump N87.9
Technical data
Translation of Original Operating and Installation Instruction, english, KNF 121538-121541 11/22
11
Other parameters
Parameter
Value
Permissible ambient temperature
[°C]
+5 to +40
Permissible media temperature [°C] +5 to +40
Dimensions
See Fig. 3 Chapter
Highest permissible relative air hu-
midity of the environment
80% for temperatures up to 31 °C,
decreasing linearly to 50% at 40 °C.
Maximum installation altitude [m
above sea level]
2000
Gas tightness* of the pump head
(leak rate)
≤ 6 x 10
-3
mbar l/s
Tab.10 Other parameters
* The gas tightness of the pump head is no longer ensured after the pump head is
opened or after replacing diaphragms and valve plates. A leak test can be used to
determine whether the original gas tightness is achieved again.