32
• The operating elements can be accessed
once the transparent housing cover has
been removed. The housing cover may be
removed for operational purposes, but it
only makes sense for service work.
• The protective rating given is reduced
when the cover is removed (water-tightn-
ess). Before removal, it must be checked
whether there is a hazard through high
humidity or splashwater. In this case, the
control unit must be switched voltage-free
first. In case of doubt, a qualified electrici-
an must be consulted.
• The current set at the motor protection
switch must correspond with the rated cur-
rent of the connected motor and must not
be adjusted by the operator.
• Following operation, the housing cover
must be sealed properly again to guaran-
tee the protective rating (water-tightness).
9.3 Switch unit for double system (up to model year 12/09)
9.3.1 Description of the display and control elements
Display elements (LEDs)
Normal mode
Operation
green
Voltage supply OK
(for information for the user
Level „Alarm“
yellow
"Alarm" level reached
Level „On2“
yellow
"On 2" level reached
Level „On1“
yellow
"On 1" level reached
Level „Off“
yellow
no function
Pump 1
green
Pump output 1 activated
Pump 2
green
Pump output 2 activated
Malfunction
Phase / rotary field
red
Permanently lit: Phase failure (has display priority)
(for information for the
Flashing:
Rotary field fault
fitter, motor protection switch Pump 2 MSS/Temp
red
Permanently lit: Motor protection switch
also for the operator)
hat ausgelöst
Flashing:
Excessive motor temperature Pump 2
Pump 1 MSS/Temp
red
Permanently lit: Motor protection switch pump 1
has triggered
Flashing: Excessive motor temperature pump 1
Running time/level
red
Permanently lit: Running time fault
Flashing:
Level fault
saving - priority treatment
Bedienelemente
Manual - 0 - Auto (Pump 1)
Sliding switch
Choice of operating mode for pump 1
Manual - 0 - Auto (Pump 2)
Sliding switch
Choice of operating mode for pump 2
Alarm Reset
Key
Reset / alarm signal sensor test
Reset of a level fault display
Reset of excess motor temperature
Motor protection 1
Switch
Triggered when pump 1 has excess current
Motor protection 2
Switch
Triggered when pump 2 has excess current
9. Control unit
View of the inside of the switch unit (schematic, not to scale)
4.1
4.1
1. -
2. Mains supply
3. Slot for rechargeable bat-
tery (rechargeable battery
available as accessory)
4.1 Connection of supply for
pump motor
4.2 Connection of temperature
monitoring for pump motor
5. Connection of level inputs
6. Connection for external
malfunction and alarm mes-
sage
