Wilo Stratos MAXO Notice De Montage Et De Mise En Service page 143

• Allow the pump to cool down before commencing any work!
WARNING
Hot fluids!
There is a risk of scalding caused by escaping, hot fluid at high fluid temperatures and sys-
tem pressure values.
Residual pressure in the pump between the shut-off devices may suddenly push the loose
sensor out of the pump housing.
• Close shut-off device or drain unit!
• Follow the manufacturer's instructions and safety data sheets for possible additives in the system!
Dismantling the sensor
1. Dismantle the two-part thermal insulation from the pump housing of single pumps.
2. Pull sensor socket from sensor.
3. Loosen screws of the fixing plate.
4. Pull out sensor. If required, lift the sensor into the groove with a flat screwdriver.
Installation of the sensor on pump housing
The installation of the sensor on pump housing is done in reverse order of dismantling.
NOTICE
Ensure correct positioning during sensor installation!
1. Push the bar, which is located on sensor, into the groove at the sensor opening.
15.3 Pump venting
Trapped air in the pump housing causes noise. Open the "Pump venting" function in the
and measured values" menu to vent the pump hydraulics.
In the "Diagnostics and measured values" menu
1. "Maintenance"
2. Select "Pump venting".
15.4 Pump kick
In order to avoid impeller/rotor blockages when the pump is at standstill for longer periods (e.g. an inactive
heating system during summer), the pump regularly performs pump kicks by briefly starting it. In this
process, it starts briefly.
If the pump does not start operating within an interval of 24 hours (factory setting), the system completes a
pump kick. In this process, the pump must always be supplied with power. You can change the pump kick in-
terval at the pump.
In the "Diagnostics and measured values" menu
1. "Maintenance"
Installation and operating instructions • Wilo-Stratos MAXO/-D/-Z • Ed.02/2023-10
, select
, select
en-US
"Diagnostics
143