Wilo FKT 50.1 Series, Installation And Operating Instructions Manual

Page: 173 / 1480

Product description en
Installation and operating instructions Wilo Motor FKT 50.1, 57, 63.1, 63.2 + EMU FA 173
– On motor side: SiC/SiC
– Fluid side: SiC/SiC
– Static: NBR (nitrile)
The precise details of the materials are shown in the respective configuration.
4.2 Monitoring devices
Overview of possible monitoring devices:
FKT 50.1 FKT 57 FKT 63.1 FKT 63.2
Internal monitoring devices
Terminal room/motor compart-
ment • • • •
Motor winding • • • •
Motor bearings
o o o o
Sealing chamber
− − − •
Leakage chamber
• • • •
Vibration sensor
o o o o
External monitoring devices
Sealing chamber
− − − o
Key: − = not available/possible, o = optional, • = as standard
All the monitoring devices fitted must always be connected!
Monitoring the terminal room and motor compartment
The terminal room and motor compartment monitoring protects the motor terminals
and winding from short-circuits. An electrode in both the terminal room and the motor
compartment measures the moisture content.
Monitoring of motor winding
The thermal motor monitoring protects the motor winding from overheating. Temper-
ature limiting with bimetallic strip is fitted as standard.
As an option, the temperature can also be measured with a PTC sensor. The thermal
motor monitoring can also be designed as temperature control. This allows the meas-
urement of two temperatures. When the low temperature is reached, an automatic re-
activation can be initiated after cooling the motor. When the high temperature is
reached, the unit must deactivate with reactivation lock.
Internal monitoring of sealing chamber
This sealing chamber is equipped with an internal pencil electrode. The electrode re-
gisters fluid ingress through the mechanical seal on the fluid side. An alarm or deactiva-
tion of the pump can therefore take place by pump control.
External monitoring of the sealing chamber
The sealing chamber can be equipped with an external pencil electrode. The electrode
registers fluid ingress through the mechanical seal on the fluid side. An alarm or deac-
tivation of the pump can therefore take place by pump control.
Leakage chamber monitoring
The leakage chamber is equipped with a float switch. The float switch registers fluid in-
gress through the mechanical seal on the motor side. An alarm or deactivation of the
pump can therefore take place by pump control.
Monitoring of motor bearing
The thermal monitoring of the motor bearing protects the roller bearings against over-
heating. Pt100 sensors are used for temperature measurement.
Monitoring of vibration occurring due to operation
The pump can be equipped with a vibration sensor. The vibration sensor registers the
vibration that occurs during operation. An alarm or deactivation of the pump must be
effected via the pump control depending on the differing limit values.