180R9346 | AQ240486503020en-001702 | 51© Danfoss | 2023.03
Operation guide Installation, Operation and Maintenance APP 53-92 pumps
1. Flush inlet line before connecting the
pump, to remove possible impurities from
pipes, hoses etc.
2. Connect pump inlet to inlet line and ush
the pump for 5 min. by means of the
internal ushing valve, to remove possible
impurities from pipes, hoses etc.
3. Loosen top bleeding plug (see item 3.5)
using an allen key (only plugs with internal
hexagon sockets). Retighten the plug,
when water appears from the bleeding
plug.
4. Make sure that the direction of rotation of
the electric motor corresponds to the direc-
tion of rotation of the pump, show on the
pump ange.
5. Now the pump is ready for start-up.
WARNING
Make sure that the direction of rotation of the
electric motor corresponds to the direction of
rotation of the pump.
Otherwise the pump will be damaged if a
check valve is placed between pump and feed
pump.
5. Initial start-up
O
I
Internal
ushing
valve
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