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Pressure switch operation
In pressure switch operation, status of the line pressure switches can be displayed with
-button. Pressing the button will display status of the line 1 pressure switch first. Code P1
and line 1 pressure switch status are displayed in turns. Pressing the button again will display
the status of line 2 pressure switch. Code P2 and the status of line 2 pressure switch are
displayed in turns. The display returns to display the phase code automatically after 4 minutes
if the buttons have not been used.
The status closed contact of pressure switch is shown with code on and status open contact
with code oF.
3.2 Power failure
The set values and program status are preserved in the memory also during power failures.
After power is back on, the operation will resume from the status it was before power failure
occurred. Possible stopped pressurization restarts for the same line. Interval time is not
counted during power failures.
3.3 Alarms
System with one channel:
•
The system is in alarm mode when the red LED-signal for line L1, line L2 or pressurization
P is blinking.
System with two channels:
•
The system is in alarm mode when the red LED-signal for channel CH1 or CH2 is lit.
•
When the channel which is selected on the display is in alarm mode, the red LED-signal for
line L1, line L2 or pressurization P is blinking.
3.3.1 Low level alarm
The channel triggers a low level alarm, stops pressurization and goes into alarm mode, if the
lubricant barrel is empty. This means that the barrel low level switch is closed. Code AGr is
blinking on the display and the red LED-signal P for pressurization is blinking. The same line
will be pressurized again, when low level switch is open and the alarm has been reset by
pressing the SET –button.
3.3.2 Pressure alarm
The channel triggers a pressure alarm and goes into alarm mode, if the line pressure is not low
enough when pressurization phase starts or if the line pressure does not rise high enough
during pressurization time.
Alarm, high pressure
If the line pressure is not low enough when pressurization phase starts, code AHP is blinking
on the display and the red LED-signal L1 or L2 of the line which has caused the alarm is
blinking.
In pressure transmitter operation, an alarm is triggered, if the line pressure is above the set
low limit when pressurization starts. The same line will be pressurized again, when pressure
level is below the low limit value and the alarm has been reset by pressing the SET -button.
In pressure switch operation, an alarm is triggered, if the pressure switch is closed when
pressurization starts. The same line will be pressurized again, when pressure switch opens and
the alarm has been reset by pressing the SET –button.
MUIF3AEN.doc
MAXILUBE
IF-105
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21.4.2005 Rev. 3A
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