Alfa Laval Copenhagen A/S
ALF – Installation, Operating and Safety Manual
ALF Instruction Manual UM_Filter_100B03
Page 25 of 67
6.5 ALF Filter Start, Operation and Shut down – 2Touch Type
The following procedure should be carried out after initial installation and / or after
each periodic service and maintenance.
Prior to carrying out the commissioning procedure, make sure that the filter is put off
stream and is depressurized and properly drained.
A. Turn the panel power supply main switch ON. (or local safety switch – option)
B. Operating time intervals are selected by default for selected filter type. This can be
verified by checking parameters P110 (Flush Interval), P111 (Primary Flush
Interval), P112 (Secondary Flush Interval).
C. Ensure that no alarms are active/un-acknowledged.
D. Press the filter START (filter system / system run) push button. Confirm with
START that installation is done correctly
E. Check the operation of both the actuators during the flushing sequence to see
whether cables and air hoses have been connected properly or not (see figure
below):
1 Activate “Manual Flush”
2 Flushing valve actuator opens counter clockwise (primary flushing).
3 Flow diverter valve actuator closes clockwise (secondary flushing / back
flushing).
4 Both actuators returns to “normal operation” position simultaneously.
F. Normal operation position for each valve (not the actuators) is:
Flushing Valve = Closed
Flow Diverter = Open
Pneumatic actuators only:
All actuators are equipped with throttle valves (air restrictors) for a smooth operation. Air-supply to
the actuators and the solenoid valves must be dry and clean.
Compressed air quality must be:
Oil content: max 10 mg/dm³.
Water content: none - use a water separator.
Solid particles: max. 0.01 mm.
Operation pressure: Min. 5.0 barg. / Max. 10.0 barg.
G. Check the function of the limit switches to make sure that the cables have been
properly connected. Position of the actuator can be seen on the display.
H. If a differential pressure control system is available (optional), then check the
signal on the display. Parameters can be verified in P114 to P125 (refer to the
document “ALF Filter Operator Interface.doc” in appendix C).
To Next Page
Loading...
Need help?
General
