DETROIT DIESEL
Operating Instructions
ALTERNATING CURRENT POWER GENERATOR SET OPERATING INSTRUCTIONS
it can be controlled to permit a reduction in the load
These instructions cover the fundamental procedures for
should a normal load increase occur while the set is
operating an alternating current power generator set
operating. Locate the supplementary load outside the
(Fig. 1). The operator should read these instructions
engine room, if desirable, to provide adequate cooling.
before attempting to operate the generator set.
Loading the generator set to 40% of the generator rating
Never operate a generator set for a short (15 minute)
and operating it for one-hour intervals will bring the
interval the engine will not reach normal operating
engine and generator to normal operating temperatures
temperature in so short a period.
and circulate the lubricants properly. Abnormal amounts
of moisture, carbon and sludge are due primarily to low
Avoid operating the set for extended periods at noload.
internal operating temperatures which are much less
likely to occur when the set is tested properly.
Ideally, operate the set for one hour with at least 40%
load (generator rating).
PREPARATION FOR STARTING
When a test must be made with a line load of less than
40% of the generator rating, add a supplementary' load.
Before attempting to start a new or an overhauled
engine or an engine which has been in storage, perform
Connect the supplementary load to the load terminals of
all of the operations listed under Preparation for Starting
the control cabinet circuit breaker so that the generator
Engine First Time. Before a routine start, see Daily
can be "loaded" whenever the breaker is closed.
Operations in the Lubrication and Preventive
Maintenance Chart.
Make certain that the supplementary load is such that
In addition to the Engine Operating Instructions, the
Fig. 1. Location of Controls on Power Generator Set
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