DSE Model 5310 Automatic Mains Failure & Instrumentation System Operators Manual
Part No. 057-013 5310 OPERATING MANUAL ISSUE 7.1 18/06/2007 ADM 13
4.2 ANALOGUE PRE-ALARMS
The following alarms are termed ‘pre-alarms’ as they pre warn the operator of a potentially more serious alarm
condition. For instance, if the engine temperature rises past the pre alarm level, a warning condition will occur to
notify the operator. If the temperature falls below this level, then the alarm ceases, and the set will continue to run
as normal. However if the temperature continues to rise until the coolant temperature trip point is reached, the
warning is escalated and a high coolant temperature shutdown is initiated.
LOW OIL PRESSURE, if the module detects that the engine oil pressure has fallen below the low oil pressure pre-
alarm setting level after the Safety On timer has expired, a warning will occur. Alarm Warning Low Oil Pressure will
be displayed.
Alarm
Warning
Low oil pressure
HIGH ENGINE TEMPERATURE if the module detects that the engine coolant temperature has exceeded the high
engine temperature pre-alarm setting level after the Safety On timer has expired, a warning will occur. Alarm
Warning High Coolant Temperature will be displayed.
Alarm
Warning
High temperature
LOW ENGINE TEMPERATURE if the module detects that the engine coolant temperature has fallen below the low
engine temperature pre-alarm setting level after the Safety On timer has expired, a warning will occur. Alarm
Warning Low Coolant Temp will be displayed.
Alarm
Warning
Low Coolant Temp
OVERSPEED, if the engine speed exceeds the pre-alarm trip a warning is initiated. Alarm Warning Overspeed will
be displayed. It is an immediate warning.
Alarm
Warning
Overspeed
UNDERSPEED, if the engine speed falls below the pre-set pre-alarm after the Safety On timer has expired, a
warning is initiated. Alarm Warning Underspeed will be displayed.
Alarm
Warning
Underspeed
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