Solar working station operation manual SR881
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Close the drain ball valve(3) of flushing and filling unit, and continues run the pump and
increase the system pressure to approx.5 bar, system pressure can be read from the
manometer.
Close the filling ball valve (1) of the flushing and filling unit, and then close the filling
pump.
Check the manometer to see whether the system pressure reduces and eliminate leaks
where necessary.
Reconnect the expansion vessel to the solar thermal system.
3.2 Flow check
The flow counter is used for measurement and display of flow rate, in order to guarantee the
flawless function of the measuring device the system must be flushed and free from foreign
substances.
Digital flow meter
（
1-20L/min
）
Mechanical flow meter
（
2-8L/min
）
3.3 Electrical connection
Warning: disconnect the controller from power supply before opening the housing!
The controller is already integrated in the station
and ready to plug in, display and digital counter
are already preinstalled at factory. For
maintenance or service work, it needs to take
out the controller from station, doing follows
below steps:
Switch off the system, disconnect plug from
the mains.
1
2
Flow control valve
流
Flow rate scale
