MARLEY ULTRASONIC OIL LEVEL SWITCH (OLS) CONTROLS for Geareducer Gear Drives
- Factory installed oil piping with height adjustment bracket.
- Factory-installed ultrasonic oil level DC switch with 25′ cable (50′ available for large cooling towers).
- NEMA 4X fiberglass AC to DC interface relay box field mounted outside the cooling tower.
- Integrated ON-OFF dry relay contact used by the BMS to activate an alarm for the cooling tower operator.
AC utility power applied to the AC to DC interface box provides DC power to the oil level sensing switch. 2 Form C relay contacts are provided in the interface box that change state if the oil in the gearbox drops to a low condition.
Marley OLS+u+bms ULTRASONIC OIL LEVEL SWITCH CONTROL for BMS
The OLS ultrasonic switch is a 4-wire device, two wires for DC power from the BMS (Building Management System) and two wires for its internal switch. The switch includes an integrated ON-OFF dry relay contact used by the BMS to activate an alarm for the cooling tower operator.