Operating Modes; Operation With Frequency Converter; Operation In An Explosive Atmosphere; Rating Plate - Wilo FKT 50.1 Series Installation And Operating Instructions Manual

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4.3

Operating modes

4.4 Operation with frequency con-
verter
4.5 Operation in an explosive atmo-
sphere
ATEX approval
FM approval
CSA-Ex approval
Key: − = not available/possible, o = optional, • = as standard
4.6

Rating plate

174
Product description
NOTICE! The limit values are set on-site during commissioning and recorded in the
commissioning log!
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 −
− −
For use in explosive atmospheres, the pump must be marked as follows on the rating
plate:
▪ "Ex" symbol of the corresponding approval
▪ 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 pumps are suitable for operation in potentially explosive atmospheres:
▪ Device group: II
▪ Category: 2, zone 1 and zone 2
These pumps must not be used in zone 0!
FM approval
The pumps are suitable for operation in potentially explosive atmospheres:
▪ Protection class: Explosionproof
▪ Category: Class I, Division 1
Notice: If the cabling is carried out according to Division 1, installation in Class I, Divi-
sion 2 is also permitted.
The following is an overview of the abbreviations and associated data on the rating
plate:
Rating plate Value
designation
Pump type
P-Typ
Motor type
M-Typ
o o
− −
− −
o
−
−
WILO SE 2019-01