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