Installation, mounting and connection
N 810/820/840.18 EX
22
Translation of original Operating Instructions, English, KNF 309515-309518 06/17
7.2. Mounting Gas ballast (optional)
Only for two-headed pumps.
Pumps with a „G“ in the type designation are already equipped
with a gas ballast as standard.
Pump disconnected from mains and de-energized.
Mounting
1. Disconnect the tubes in the inlet (Fig. 3/
6
) and the outlet (
4
) of
the pump.
2. Open the connection (
2
) of the pump heads.
3. Screw out the connecting piece (
1
) of the vacuum side head.
4. Screw the gas ballast into the pump head.
5. Remount the connection (
2
) between the both pump heads.
If necessary:
Connect inert gas supply to ventilation connection. Observe the
safety instructions in Chapter 4. Please contact KNF Service if you
require an inert connection for the gas ballast.
Condition
