Alfa Laval Copenhagen A/S
ALF – Installation, Operating and Safety Manual
ALF Instruction Manual UM_Filter_100B03
Page 30 of 67
6.6.2 Extra Flushing Procedure
If the differential pressure across the filter increases, the filter might be clogged. If the
filter is equipped with the differential pressure control system (optional) a flushing
sequence will be initiated automatically.
If the filter does not have the differential pressure control system and the timer based
flushing is not activated, please do as below:
• Press the extra flushing/flushing push button in order to initiate the flushing.
• The timer based flushing sequence can be adapted using the time selector
switch inside the panel in order to optimize cleaning.
• If it does not help, then prepare for filter shut-down and perform service
procedure.
6.6.3 Shut-Down Procedure
1 STOP the filter on the control panel push button.
The actuators will return to normal position now. The STOP (filter system/system
run) push button will flash until the actuators have returned completely at the end
position
2 Shut off or isolate water supply.
3 Electric Actuators:
Turn the safety switch OFF at the junction box (optional) or at the control panel.
The safety switch shall be padlocked to avoid activation from other people.
4 Pneumatic Actuators:
Disconnect air-supply from the Control panel. Service can now be conducted on a
filter without turning OFF the control panel main power supply.
WARNING
If service is performed on the filter without disconnecting or isolating the
power/air – unexpected movement can occur with personal injury as
consequence.
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