BRP-Rotax
INSTALLATION MANUAL
VALIDATION OF INSTALLATION
General The validation procedures described in this chapter do not claim to be complete. The cor-
rect execution and compliance with all given system limitations and interface descriptions
as well as with standards and norms given by authorities must be proven by the aircraft
manufacturer.
Coolant
temperature
The maximum coolant temperature must be determined in order to check the efficiency of
the cooling system.
Figure 8.13: Coolant Temperature Sensor (CTS), TYPICAL
1
Coolant temperature sensor
The coolant temperature is measured using a temperature sensor (1), which is installed
on cylinder 4.
NOTICE
It is possible to record a false measurement when measuring fluid temperatures.
If fluid volume is lost and sensor is not fully submerged in the liquid, the indicat-
ing instrument could incorrectly display a lower temperature, by measuring the
air temperature instead of the coolant temperature.
Pressure test To ensure the System has no leakage, remove the pressure cap from the expansion tank.
Then attach the pressure tester and pump the system until the pressure manometer
shows 1.2 bar (18 psi). After min. 1 minute, there should be still 1.2 bar (18 psi) pressure
in the system.
• Check the efficiency of the coolant radiator and its proper sealing between cowling and
radiator.
• Check the proper flow between expansion tank and overflow bottle.
• Ensure that no ram-air is induced onto the overflow bottle vent line.
• Check efficiency of air duct and proper air flow through the duct and around cylinders.
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Page 14
December 01 2023
Effectivity: 916 i A / C24
Edition 0/Rev. 1
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