KNF N 811, Перевод оригинальных инструкций по эксплуатации и установке, Страница: 23 / 36

Diaphragm vacuum pump N 89/N 811/N 814/N 815 Servicing
Translation of original Operating and Installation Instructions, english, KNF 121242-121509 04/20 23
8. Servicing
8.1. Servicing schedule
Component Servicing interval
Pump
-
Inspect regularly for external dam-
age or leaks
Hose connection
-
Inspect regularly for external dam-
age or leaks
Diaphragm and valve
plates/sealings
-
Change as soon as pumping capaci-
ty decreases, preferably sooner
-
Replace at latest, when pump output
decreases
Tab. 12
8.2. Cleaning
When cleaning, make sure that no liquids enter the inside of
the housing.
8.2.1. Flushing pump

Before switching off the pump, flush it with air (or with inert gas
if required for safety reasons) under atmospheric conditions
(ambient pressure) for about five minutes.
8.2.2. Cleaning pump

Motor disconnected from mains and de-energized
CAUTION
Danger of burns from hot pump parts
The pump head or motor may be hot even after the
pump has been shut off.

Allow the pump to cool after operation.
WARNING
Health hazard due to dangerous substances
in the pump
Depending on the substances transferred, caustic
burns or poisoning are possible.

Wear protective clothing if necessary, e.g. pro-
tective gloves.

Clean pump with suitable measures.

As far as possible, clean the parts with a dry cloth. Solvent
should be used for cleaning only if the head materials are not
corroded (ensure compatibility of the material).

If compressed air is available, blow out the parts.
Conditions