Xylem FLYFT P7900, Инструкция по установке, эксплуатации и обслуживанию

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Voltage range Drive units Maximum number of starts per
hour
705 15
735 15
765 15
Up to 1 kV 706 10
736 10
766 10
3.4 The MAS 801 monitoring equipment
3.4.1 FLS: float switch sensor
The float switches are leakage sensors.
The float switches are located in the lower part of the stator housing and in the junction box.
3.4.2 Vibration in three directions
A vibration sensor that is located in the PEM measures vibration speed in three directions.
Two adjustable alarm limits can be applied for each measurement direction:
• Early warning: “B”-alarm
• Pump stop: “A”-alarm
X
X
Y
Y
Z
WS011503A
Figure 2: Vibration directions with reference to the PEM
The definitions of X, Y and Z are the same, whether or not the pump is in a vertical or
horizontal position.
3.4.3 Bearing temperature measurement
Pt100 sensors monitor the bearing temperatures to protect the pump from the consequences
of a bearing failure.
Main bearing
Main bearing temperature monitoring is standard in the MAS 711 and MAS 801. The Pt100
sensor is pressed by a spring against the outer ring of the ball bearing.
Support bearing
Support bearing temperature monitoring is an option in the MAS 711 and MAS 801. The
Pt100 sensor is pressed by a spring against the outer ring of the roller bearing.
Alarms
Two adjustable alarm limits can be used:
3 Product Description
P7900 Installation, Operation, and Maintenance Manual 11