Wilo Rexa CUT GE Einbau- Und Betriebsanleitung Seite 137

4.4 Operation with frequency con-
verter
4.5 Operation in an explosive atmo-
sphere
4.6 Technical data
Installation and operating instructions Wilo-Rexa CUT GE
Product description
Operating mode S3: Intermittent periodic duty
This operating mode defines a switching cycle in a combination of periods of operation
and standstill. Specified value (e.g. S3 25 %) relates to the operating time. The switch-
ing cycle has a duration of 10 min.
If two values (e.g. S3 25 %/120 s) are specified, the first value relates to the operating
time. The second value specifies the max. period of the switching cycle.
Operation on the frequency converter is permitted. Refer to the appendix for the relev-
ant requirements!
ATEX approval
FM approval
CSA-Ex approval
Key: - = not available/possible, o = optional, • = as standard
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.
General
Date of manufacture [MFY]
Mains connection [U/f]
Power consumption [P ]
1
Rated power [P ]
2
Max. delivery head [H]
Max. volume flow [Q]
Activation type [AT]
Fluid temperature [t]
Pressure connection
Protection class
Insulation class [Cl.]
Speed [n]
Max. switching frequency
Max. immersion depth [8]
Cable length (standard version)
Explosion protection
Operating modes
Immersed [OTs]
P 13
•
•
-
See rating plate
See rating plate
See rating plate
See rating plate
See rating plate
See rating plate
See rating plate
3...40 °C
DN 32/DN 40/Rp 1¼
IP68
F (optionally: H)
See rating plate
50/h
20 m
10 m
ATEX, FM
S1
en
137