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13.3.5
Commissioning
13.3.6
Maintenance and repair
13.3.6.1 Repair of housing coating
13.3.6.2 Replacing the connection cable
13.3.6.3 Changing the mechanical seal
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Appendix
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.
ƒ
The operator is responsible for defining the potentially explosive area.
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Only Ex-rated mixers may be used within potentially explosive areas.
ƒ
Mixers with Ex approval must be labelled as such on the rating plate.
ƒ
Do not exceed the max. fluid temperature!
ƒ
According to DIN EN 50495, a safety device with SIL level 1 and hardware fault tolerance
0 must be provided for category 2.
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Carry out maintenance tasks according to the regulations.
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Only carry out maintenance tasks described in these installation and operating instruc-
tions.
ƒ
The spark-proof gaps must only be repaired according to the manufacturer's design
specifications. It is not permitted to carry out repairs according to the values in tables 1
and 2 of DIN EN 60079-1.
ƒ
Only use screws as stipulated by the manufacturer and which correspond to a strength
class of 600 N/mm² (38.85 long tons-force/inch²) at minimum.
The paint layer can become electrostatically charged in case of thicker coats.DANGER! Risk
of explosion! In explosive atmospheres, a discharge can cause an explosion!
If the housing coating has to be repaired, the maximum coat thickness is 2 mm (0.08 in)!
Changing the connection cable is strictly prohibited!
Changing the seal on the motor side is strictly prohibited!
WILO SE 2021-05
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