Wilo EMU TR 14 Notice De Montage Et De Mise En Service page 286

en
Seal
Fluid side: SiC/SiC
On the motor side: NBR (nitrile)
On the motor side: SiC/SiC
Housing material
EN-GJL-250
(ASTM A48 Class 35/40B)
4.2 Monitoring devices
Internal monitoring devices
Motor compartment
Motor compartment/sealing chamber*
Motor winding**
External monitoring devices
Sealing chamber
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Product description
• •
− −
• •
• •
Overview of possible monitoring devices:
o o
− −
• •
o o
Legend
− = not available/possible, o = optional, • = standard
* In the Ex version, this monitoring is omitted and not substituted!
** A temperature limiter is fitted as standard. The Ex version as per ATEX also features
an installed temperature controller and limiter.
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 the motor compartment and sealing chamber
The motor compartment monitoring protects the motor winding from short-circuits.
Sealing chamber control detects fluid ingress through the mechanical seal on the fluid
side. In each case, the humidity is recorded by an electrode in the motor compartment
and sealing chamber.
NOTICE! The Ex version does not feature this monitoring unit!
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.
• • •
− • −
• − •
• • •
o − o
− o −
• • •
o o o
• •
• •
− −
• •
− −
o o
• •
o o
WILO SE 2019-01