Operation
Vacuum Pumps N 920 APE-W and N 920 APDC-B
20
Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19
8. Operation
8.1. General
WARNING
Danger of burns from hot pump parts or hot medium
During or after operation of the pump, some pump
parts may be hot.
➔
Allow the pump to cool after operation.
➔
Take safety precautions against the contact of
hot parts/media.
WARNING
Injury of the eyes
During excessive approach to the inlet or outlet of
the pump, the eyes could be injured by the upcoming
vacuum or overpressure.
➔
Don’t look into the pump’s inlet or outlet during
the operation.
➔
Only operate the pumps under the operating parameters and
conditions described in Chapter 4. Technical Data.
➔
Make sure the pumps are used properly (see Chapter 2.1).
➔
Make sure the pumps are not used improperly (see Chapter
➔
Observe the safety precautions (see Chapter 3).
➔
The pumps are intended for installation. Before putting them
into service it must be established that machinery or equipment
in which they are installed meets the relevant regulations.
WARNING
Hazard of the pump head bursting due to excessive
pressure increase
➔
Do not exceed max. permissible operating pres-
sure (see Chapter 4. Technical Data.
➔
Monitor pressure during operation.
➔
If the pressure exceeds the maximum permissi-
ble operating pressure, immediately switch off
pump and eliminate fault (see Chapter 10. Trou-
bleshooting).
➔
Only throttle or regulate the air or gas quantity in
the suction line to prevent the maximum permis-
sible operating pressure from being exceeded.
➔
If the air or gas quantity in the pressure line is
throttled or regulated, make sure that the maxi-
mum permissible operating pressure is not ex-
ceeded.
➔
Ensure that the pump outlet is not closed or con-
stricted.
