Ex Rating - Wilo Vardo WEEDLESS-F Instrucciones De Instalación Y Funcionamiento

13.2

Ex rating

13.2.1 Identification of Ex-rated mixers
13.2.2 Intended use
13.2.3 Installation
13.2.4 Commissioning
13.2.5 Maintenance and repair
13.2.6 Drive unit
Installation and operating instructions Wilo-Vardo WEEDLESS-F
Appendix
This section contains further information on the operation of the mixer in an explosive
atmosphere. All personnel must read this section. This section applies only to Ex-rated
mixers!
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.
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!
DANGER
Risk of explosion due to incorrect installation!
Ensure the connection made between the motor plate and support structure is gas-
tight. If gases can escape, there is a risk of explosion! This work must only be carried
out by customer service or approved qualified specialists!
DANGER
Risk of explosion when using non-Ex-rated mixers!
Risk of fatal injury due to explosion! Only use mixers which have Ex labelling on the
rating plate within potentially explosive areas.
▪ The operator is responsible for defining the potentially explosive area.
▪ Only Ex-rated mixers may be used within potentially explosive areas.
▪ Ex-rated mixers must be labelled as such on the rating plate.
▪ Carry out maintenance tasks according to the regulations.
▪ Only carry out the maintenance tasks described in these installation and operating in-
structions.
▪ Any work relating to the motor plate (installation, dismantling and replacement) must
only be carried out by customer service!
▪ The drive unit is approved for use in explosive atmospheres!
▪ The drive unit is labelled for the present Ex zone!
▪ Consult the manufacturer's instructions and comply with information on use of the
drive unit in explosive atmospheres!
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