BRP ROTAX 914 Series, Operator'S Manual

Page: 79 / 96

Effectivity: 914 Series
Rev. 0 BRP-Rotax Page 7-13
August 01 2019
7.6.1) TCU caution lamps
Caution lamp
The TCU (Turbo Control Unit) is furnished additionally with out-
put connections for an external “red“ boost lamp and an “or-
ange“ caution lamp for indication of function of the TCU.
Function test
m WARNING
Non-compliance can result in serious injuries or death!
The engine must not be taken into operation before having corrected
the cause of deficiency.
When switching on the voltage supply, the two lamps are auto-
matically subject to a function test. Both lamps illuminate for 1-2
seconds, then they extinguish. If they do not, a check as per
Maintenance Manual is necessary.
Orange caution
lamp If the caution lamp illuminates during the function test and then
goes off this indicates the TCU is ready for operation.
If the lamp is blinking, this indicates a malfunction of the TCU or
its periphery.
See Chapter 4) Abnormal operation.
Red boost lamp
ATTENTION
Engine could be thermally and mechanically overstressed.
The red boost lamp helps the pilot to avoid full power operation for lon-
ger than 5 minutes.
• Exceeding of the admissible boost pressure will activate the
red boost lamp, being continuously illuminated.
See Chapter 4) Abnormal operation.
• The TCU registers the time of full throttle operation (boost
pressure). Full throttle operation for longer than 5 minutes will
make the red boost lamp blink.
See Chapter 4) Abnormal operation.