GE OPTIMA MR360 Service Training page 140

Leak sensors are classified three levels. Leak sensor 1 is the highest level, which is only used
in HDe system and will trip the PDU main breaker. In SV system, only Leak sensor 2 and 3 are
used.
Leak sensor 2 consists of three parts: Front, Bottom and Water Tray. Front sensor locates in
front of RF amplifier and XFD; Bottom sensor locates on the bottom of the system cabinet;
Water Tray sensor locates on the left side of tray. The three parts of sensor 2 are serially
connected and terminated on the water tray sensor.
Leak sensor 3 locates on the bottom of the water tray.
A fault on Leak sensor 2 will trip the E-Off.
A fault on Leak sensor 3 will produce an error message.
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