Alpha Technologies AlphaGen 5.0kW Auxiliary Power Unit - Manual (Page 36)

3. Maintenance
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031-132-B0-001 Rev. A TM ©2000
3.2 Scheduled Maintenance, continued
3.2.2 ECM Service Required Notification
The ECM monitors time between periodic maintenance of the engine-
generator. The Service Interval internal ECM variable represents the number of
hours of engine-run-time between periodic services. When the engine runs for
a number of hours equal to Service Interval, the ECM sets the Service Required
Alarm and turns on the amber notification LED. The default value of Service
Interval is 100 hours but it can be programmed from 0 to 250.
Service Due represents the number of engine run time hours before the next
periodic maintenance will be required. Pressing and holding the service-reset
switch for 5 seconds resets the service counter and Service Due is updated with
the current value of the service interval.
An exception to the standard Service Interval occurs when the engine is
new. At 25 hours of Engine Run Time, the ECM will set the Service Required
flag. 25 hours represents the break-in period of the engine, which should be
serviced at this time.
NOTE: If a service-reset is performed before the Engine Run Time
counter reaches 20 hours, the Service Required flag will still
be set at 25 hours. If, on the other hand, a service-reset is
issued when the engine more than 20 hours, the Service
Countdown will be set to Service Interval.
NOTE: APUs are shipped with synthetic oil which does not require
changing after the initial 25 operational hours. The oil should
be changed after each 72- to 100-hour period of continuous
operation in accordance with the generator manufacturer's
owners manual. Exact times will vary as a function of
temperature and operating conditions.