Operating Instructions
DETROIT DIESEL
ALTERNATING CURRENT POWER GENERATOR SET OPERATING INSTRUCTIONS
These instructions cover the fundamental procedures for operating an alternating current power generator set (Fig. 1).
The operator should read these instructions before attempting to operate the generator set. Never operate a generator
set for a short (15 minute) interval - the engine will not reach normal operating temperature in so short a period. Avoid
operating the set for extended periods at no-load. Ideally, operate the set for one hour with at least 40%load (generator
rating). When a test must be made with a line load of less than 40% of the generator rating, add a supplementary load.
Connect the supplementary load to the load terminals of the control cabinet circuit breaker so that the generator can be
"loaded" whenever the breaker is closed. Make certain that the supplementary load is such that it can be controlled to
permit a reduction in the load should a normal load increase occur while the set is operating. Locate the supplementary
load outside the engine room, if desirable, to provide adequate cooling.
Loading the generator set to 40% of the generator rating and operating it for one-hour intervals will bring the engine and
generator to normal operating temperatures and circulate the lubricants properly. Abnormal amounts of moisture, carbon
and sludge are due primarily to low internal operating temperatures which are much less likely to occur when the set is
tested properly.
PREPARATION FOR STARTING
Before attempting to start a new or an overhauled engine or an engine which has been in storage, perform all of the
operations listed under Preparation for Starting Engine First Time. Before a routine start, see Daily Operations in the
.Lubrication and Preventive Maintenance Chart.
In addition to the Engine Operating Instructions, the
Fig. 1 . Location of Controls on Power Generator Set
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