Wilo -EMU TR 50-2 Serie Notice De Montage Et De Mise En Service page 333

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
Installation and operating instructions Wilo-EMU TR/TRE 50-2 ... 120-1
Appendix
▪ It must be possible to connect the motor's own temperature monitoring (bimetallic
strip or PTC sensor).
▪ If the temperature class is marked as T4/T3, temperature class T3 applies.
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.
▪ Mixers with an Ex rating must be labelled as such on the rating plate.
▪ Do not exceed the max. fluid temperature!
▪ According to DIN EN 50495, a safety device with SIL level 1 and hardware fault toler-
ance 0 must be provided for category 2.
▪ Carry out maintenance tasks according to the regulations.
▪ Only carry out maintenance tasks mentioned in these installation and operating in-
structions.
▪ The spark-proof gaps may 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.
▪ Only use screw plugs as stipulated by the manufacturer, that at least correspond to a
strength class of 600 N/mm² (38.85 long tons-force/inch²).
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!
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