Operating instrutions
WITA U 25 | U 35 | U 55 | U 75
10 Filling and Venting the System
The system must be thoroughly flushed before
the pump is started up to prevent contami-
nants or foreign bodies from remaining in the
system.
Fill and vent the system correctly. To vent the
pump, loosen the indicated screw by turning it
anti-clockwise.
Caution!
Hot water may escape
here, depending on the system's operating state.
Afterwards, re-tighten the screw you can start
the pump in the desired mode.
Incomplete venting can lead to noises in the
pump and system.
Warning! Risk of burns!
The entire pump can be very hot,
depending on the operating state of the system.
11 Service and Maintenance
Switch off the power to the system before performing maintenance, cleaning
or repair work, and secure it against unauthorised reactivation.
Allow the pump to cool down in the event of high temperatures
and system pressures. There is a
risk of scalds!
28
Note
bleed screw
Summary of Contents for U 25
Page 30: ...Notizen Notes 30...
Page 31: ...Notizen Notes 31...
