THE BTM SYSTEM CONTINUOUSLY MONITORS THE TEMPERATURE OF THE BEARING. THE MONITORING IS PERFORMED EITHER BY MEASURING THE TEMPERATURE IN THE REAR SIDE OF THE BEARING SHELL DIRECTLY OR BY DETECTING THE RETURN OIL FROM EACH BEARING IN THE CRANKCASE. IN ANY CASE WHEN A SPECIFIED TEMPERATURE IS RECORDED AN ALARM IS RAISED. NORMALLY 2 HIGH LEVEL ALARM LEVELS APPLY IN BEARINGS. FIRST ALARM IS INDICATED IN THE PANEL WHILE THE OTHER SLOW DOWN THE ENGINE.
WHILE IN CASE OF OIL RETURN TEMPERATURE 2 HIGH TEMPERATURE ALARM LEVELS INCLUDING DEVIATION ALARM APPLY. THE FIRST IS INDICATED IN ALARM PANEL WHILE THE OTHER SLOW DOWN THE ENGINE.