en
Appendix
48
WILO SE 2019-01
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It must be possible to connect the motor’s own temperature monitoring (bimetallic
strip or PTC sensor).
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If the temperature class is marked as T4/T3, temperature class T3 applies.
13.3.5
Commissioning
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.
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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.
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Mixers with an Ex rating must be labelled as such on the rating plate.
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Do not exceed the
max. fluid temperature
!
ƒ
According to DIN EN 50495, a safety device with SIL level 1 and hardware fault toler-
ance 0 must be provided for category 2.
13.3.6
Maintenance and repair
ƒ
Carry out maintenance tasks according to the regulations.
ƒ
Only carry out maintenance tasks mentioned in these installation and operating in-
structions.
ƒ
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.
ƒ
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).
13.3.6.1 Repair of housing coating
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)!
13.3.6.2 Replacing the connection cable
Changing the connection cable is strictly prohibited!
13.3.6.3 Changing the mechanical seal
Changing the seal on the motor side is strictly prohibited!
