Diaphragm pump N680 EX
Servicing
Translation of Original Operation and Installation Instruction, english, KNF 325438 02/22
29
Component
Servicing interval
Pump
à
Perform periodic inspections for
external damage or leakage.
à
Periodically check for noticeable
changes to noises and vibra-
tions.
Pump bearing
(on pump shaft and connecting rod)
à
Replace after 34,000 operating
hours or after no more than 48
months
Motor bearing
à
See the operating and installa-
tion instructions for the motor;
inquire with the manufacturer of
the motor if necessary
Gas connections
à
Inspect the pump periodically for
external damage or leakage
Coupling
à
Inspect coupling play periodi-
cally
à
See operating instructions for
coupling
Tab.19
The ball bearings installed in the pump and in the drive motor are lubri-
cated for life. This means that the bearings are coated with a high-quality
grease with a high degree of purity and an ideal fill level by the bearing
manufacturer at the plant. These bearings cannot be relubricated. The pre-
scribed bearing replacement periods can be found in Chapter
The duration of use of the bearing grease depends on many highly individ-
ual factors. The prescribed bearing replacement periods were specified
under the assumption of normal ambient conditions. Factors that can make
early bearing replacement necessary include dust or dirt that may get into
the bearing, aggressive gases or vapors that may change the lubricating
properties of the bearing grease, etc. It is the operator's responsibility to
assess these factors.
