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11.2 Suction and Back flush pump
It is recommended that a function test of the pumps is carried out every six months. Each pump is
started in the test menu 4.
In the case where one pump should fail the complete twin pump unit has to be replaced.
It is suggested that the suction and back flush pump set be replaced after 20,000 h running hours.
Please re-run the tightness test after the replacement of the twin pump unit (look
chapter 9.1).
11.3 Floating switch
The float switch is tested by manually positioning it into the two switch positions (Empty=lower position
/Full=upper position) while the display is checked.
Fig.: lower position ->Display =
Br
min
-
Fig.: upper position ->
Br
min
+
11.4 Pressure sensor
Pressure sensors (when used) could be checked in the menu overview (menu 5, Status 2)
Pressure sensor Pumps P(ADr):
Pressure sensor blower P(ADg):
When the pressure sensor is not connected the pressure displays -1.200 bar.
Status2:
SLP : 5 / 20
P(ADr) : -0,23 bar
P(ADg) : -0,05 bar
