Operating Modes; Operation With Frequency Converter; Operation In An Explosive Atmosphere - Wilo FK 17.1 Instrucciones De Instalación Y Funcionamiento

en
4.3

Operating modes

4.4 Operation with frequency con-
verter
4.5 Operation in an explosive atmo-
sphere
ATEX approval
FM approval
160
Product description
Key: − = not available/possible, o = optional, • = as standard
All the monitoring devices fitted must always be connected!
Monitoring of motor compartment
The motor compartment monitoring protects the motor winding from short-circuits.
The moisture is measured by an electrode.
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.
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.
Operating mode S1: Continuous duty
The pump can operate continuously at the rated load without exceeding the permiss-
ible temperature.
Operating mode: Non-immersed operation
The "non-immersed operation" operating mode describes the possibility of the motor
emerging during the drainage pumping sequence. This allows a further lowering of the
water level as far as the upper edge of the hydraulics. Observe the following points dur-
ing non-immersed operation:
▪ Operating mode: Continuous duty (S1).
▪ Max. fluid and ambient temperature: The max. ambient temperature corresponds to the
max. fluid temperature shown on the rating plate.
Operation on the frequency converter is permitted. Refer to the appendix for the relev-
ant requirements!
o o −
o o −
FK 17.1 FK 202 FK 34
− − −
− − −
FK 42
−
−
WILO SE 2019-01