ULPOWER UL350 Operating Manual

Also see for UL260: Operating manual

ULPOWER UL350 Operating Manual Manual pdf 19 page image

Operating Manual ULPOWER UL260,UL350,UL390,UL520M0310: OM 260 - 520A01 Revision No: 00 Date: 2019-04-01 Page: 17 of 22Prior to take-offWarming up period:Start warming up period with engine running between 1200 and 1500 rpm, duration depending onambient temperature, until: oil temperature reaches at least 50°C (122°F) cylinder head temperatures are at least 50°C (125°F) Attention: Always check temperatures and pressures are within limits.Idle speed:When warm, engine can be set at idle speed.Note: Although engine idle speeds of 700 rpm can be obtained, we recommend the ground idle tobe at least 850 rpm for smooth running.Throttle response:When ready for take-off do a short full throttle ground test. No irregularities may occur.Note: Check with aircraft/propeller operating handbook, since engine speed depends on thepropeller used.Ignition test:The engine is equipped with double redundant ignition. Switch off one ignition coil at the time andverify that engine still operates normally on either of ignition coils separately. Attention: RPM difference between running with coil 1, with coil 2 or both may not exceed 5%of nominal RPMTake-offClimbing with the engine at maximum take-off power (3300 rpm @ full throttle) is permitted duringa time period of max. 5 minutes.Depending on propeller setting take-off power at 2800 rpm @ full throttle is permitted with no timelimitation. Attention: Observe that all temperatures and pressures remain within limits at all times. IfCHT’s exceed maximum, reduce power.CruiseSet power as required. Attention: Respect operating limits at all times.Avoid flying your aircraft if the oil temperature has not reached normal operating values yet (50°C /122°F). Low operating temperatures may not eliminate any accumulated water in the engine. Thepresence of condensation water in the lubrication system has a bad influence on the oil quality.