TM 55-4920-328-13
Table 2-5. Function of Controls and Indicators --Continued
INDEX AND
REFERENCE
FIGURE NO.
NOMENCLATURE
DESIGNATION
FUNCTION OR INDICATION
SERVICES SUB-MODULE (figure 1-25)-Continued
13, figure
SERVICES IN
DS1
Intermittently flashes on and off and the
1-25
OPERATIVE
audible alarm sounds when either the
Indicator
water brake pump, water tower pump,
fuel pump or oil pump is not operating.
14, figure
NI OVERSPEED
DS16
Intermittently flashes on and off and the
1-25
Indicator
audible alarm sounds when the engine
gas producer rotor exceeds the speci-
fied operating speed.
15, figure
HIGH EGT
DS2
Intermittently flashes on and off and the
1-25
Indicator
audible alarm sounds when the engine
exhaust gas temperature rises above
safe operating limits.
16, figure
Nil OVERSPEED
DS17
Intermittently flashes on and off and the
1-25
Indicator
audible alarm sounds when the power
turbine rotor exceeds the specified
operating speed.
17, figure
ENGINE LOW OIL
DS10
Intermittently flashes on and off and the
1-25
LEVEL Indicator
audible alarm sounds when the supply
oil level in the reservoir of the oil sys-
tem drops to a predetermined level or
when oil level is below required level on
engines with integral oil system.
18, figure
WATER BRAKE
DS3
Provides an alarm when the water brake
1-25
SYSTEM Indicator
No. 1, No. 2, or No. 3 bearing, or the
water out temperature exceeds a pre-
set level.
2-30
