Recommended Monitoring Devices; Commissioning; Personnel Qualifications; Operator Responsibilities - Wilo Vardo WEEDLESS-F Instrucciones De Instalación Y Funcionamiento

6.5 Recommended monitoring
devices
6.5.1 Level monitoring
7

Commissioning

7.1

Personnel qualifications

7.2

Operator responsibilities

7.3 Operation in an explosive atmo-
sphere
Installation and operating instructions Wilo-Vardo WEEDLESS-F
Commissioning
Consult customer service in the case of intermittent operation!
The propeller must always be immersed during operation. If the fluid level drops below
the required immersion level, switch off the mixer! We therefore recommend installing
a level monitoring device for applications where the fluid level fluctuates significantly.
WARNING
Hand and foot injuries due to lack of protective equipment!
Danger of (serious) injuries during work. Wear the following protective equipment:
• Safety gloves for protection against cuts
• Safety shoes
• Safety helmet must be worn if lifting equipment are used!
▪ Electrical work: A qualified electrician must carry out the electrical work.
▪ Operation/control: Operating personnel must be instructed in the functioning of the
complete system.
▪ Provide installation and operating instructions by the mixer or at a place specially re-
served for it.
▪ Make the installation and operating instructions available in a language the personnel
can understand.
▪ Make sure that the installation and operating instructions are read and understood by
all personnel.
▪ All safety devices and emergency cut-outs on the system-side must be active and
checked to ensure that they work properly.
▪ The mixer is suitable for use under the specified operating conditions.
Approval according to
Vardo WEEDLESS-F
Vardo WEEDLESS-S
Vardo WEEDLESS-M
Key: − = not available/possible, o = optional, • = as standard
For use in explosive atmospheres, the mixer and the drive unit must be marked as fol-
lows on the rating plate:
▪ Mixer
– "Ex" symbol of the corresponding approval
– Ex classification
▪ Drive unit
– "Ex" symbol of the corresponding approval
– Ex classification
– Certification number (depending on the approval)
If required by the approval, the certification number is printed on the rating plate.
Consult the explosion protection chapter in the appendix of these installation and
operating instructions for corresponding requirements!
ATEX approval
The mixers are suitable for operation in potentially explosive atmospheres:
▪ Device group: II
▪ Category: 2, zone 1 and zone 2
Mixers must not be used in zone 0!
ATEX FM
o −
− −
o −
en
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