Diaphragm pump N87.9 EX
Servicing
Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21
25
9 Servicing
NOTICE
Servicing the pump
Damage to the pumps can result from failure to
observe the applicable legal regulations and pro-
cedures for the location or intervention by un-
trained or uninstructed personnel.
à
Servicing may only be performed according to
the legal regulations (e.g. work safety, envi-
ronmental protection) and provisions.
à
Servicing may only be performed by special-
ized personnel or trained and instructed per-
sonnel.
9.1 Servicing schedule
WARNING
Risk of explosion from wear
à
Have the connecting rod bearing replaced by
KNF according to servicing schedule.
à
Have the motor bearing replaced by KNF ac-
cording to servicing schedule.
WARNING
Risk of explosion if genuine spare parts are not
used.
If original parts are not used, the pump loses its
explosion protection properties. Furthermore, the
function of the pump and it safety are lost.
The validity of the CE conformity is rendered void
if genuine spare parts are not used.
à
Use only genuine spare parts from KNF
when performing servicing work.
Component
Servicing interval
Pump
à
Inspect the pump periodically for
external damage or leakage
Diaphragm and valve plates/seals
à
At the latest, replace when the
pump flow rate decreases
Connection rod bearing
à
Replace after 34,000 operating
hours or after no more than 48
months
Motor bearing
à
Replace after 34,000 operating
hours or after no more than 48
months
Gas connections
à
Inspect the pump periodically for
external damage or leakage
Tab.14
