Operation With Frequency Converter; Operation In An Explosive Atmosphere; Rating Plate - Wilo -Flumen EXCEL-TRE 20 Installation And Operating Instructions Manual

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5.3 Operation with frequency con-
verter
5.4 Operation in an explosive atmo-
sphere
Approval according to
ATEX
FM
CSA-Ex
5.5

Rating plate

54
Product description
reactivation can be initiated after the motor has cooled down. The unit is forced to de-
activate with reactivation lock once the high activation temperature has been reached.
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.
Operation on the frequency converter is permitted. Refer to the appendix for the relev-
ant requirements!
o o o
o o o
o − o
Legend
− = not available/possible, o = optional, • = standard
For use in explosive atmospheres, the mixer must be marked as follows on the rating
plate:
ƒ
"Ex" symbol of the corresponding approval
ƒ
Ex classification
For the relevant requirements, refer to the explosion protection chapter in the ap-
pendix of these installation and operating instructions!
ATEX approval
The mixers are suitable for operation in potentially explosive atmospheres:
ƒ
Device group: II
ƒ
Category: 2, zone 1 and zone 2
Mixers must not be used in zone 0!
FM approval
The mixers are suitable for operation in potentially explosive atmospheres:
ƒ
Protection class: Explosionproof
ƒ
Category: Class I, Division 1
Notice: If the cabling is carried out according to Division 1, installation in Class I, Di-
vision 2 is also permitted.
The following is an overview of the abbreviations and associated data on the rating
plate:
Rating plate Value
designation
P-Typ Mixer type
M-Typ Motor type
S/N Serial number
MFY Date of manufacture*
n Speed
T Max. fluid temperature
IP Protection class
I Rated current
N
o o o
o o o
o o −
o o
o o
o −
WILO SE 2021-10