Rotax 912 i Series Installation Manual page 107

Hose from expansion tank to overflow bottle:
Hose connect-
ing expansion
See
tank
- The hose from the expansion tank to the overflow bottle must be rated
for vacuum/suction for min. 125 °C (257 °F), e.g. it must be strong
enough to withstand high temperatures and vacuum/suction during the
cooling down period.
The aircraft manufacturer must give the afford to the pilots to check the
coolant level in the expansion tank. Also it is necessary to inform the pilots
about the daily inspection of the coolant level in the aircraft manufacturers
operators (pilots) manual or an adequate link to the ROTAX 912 i Series
Operators Manual.
It is recommended that adequate measures are taken for carrying out
these inspections, e.g. a flap or panel on the cowling or a warning instru-
ment in the cockpit for low coolant level.
Graphic
Fig. 5
Effectivity: 912 i Series
Edition 1/Rev. 0
BRP-Powertrain
INSTALLATION MANUAL
Fig. 5.
Non-compliance can result in serious injuries or death!
WARNING WARNUNG
A soft walled hose is not suitable as it can collapse and
cause cooling system failure.
Part
1 Overflow bottle
2 Expansion tank assy.
Function
75-00-00
January 01/2012
Page 9