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Installation and operating instructions • Wilo-Flumen OPTI-TR 50-3 ... 120-1, Wilo-Flumen EXCEL-TRE 50-3 ... 90-2 • Ed.01/2022-07
13.3.3
Intended use
IECEx certification
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 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!
FM approval
The mixers are suitable for operation in potentially explosive atmospheres:
•
Protection class: Explosionproof
•
Category: Class I, Division 1
Notice: If the cabling is carried out according to Division 1, installation in Class I, Division
2 is also permitted.
CSA Ex rating
The mixers are suitable for operation in potentially explosive atmospheres:
•
Protection class: Explosion-proof
•
Category: Class 1Division 1
13.3.4
Electrical connection
DANGER
Risk of fatal injury due to electrical current!
Improper conduct when carrying out electrical work can lead to death
due to electric shock!
• Electrical work must be carried out by a qualified electrician!
• Observe local regulations!
•
Always connect the mixer to an electrical outlet outside the explosive area. If the con-
nection has to be made within the explosive area, then the connection must be carried
out in an Ex-rated housing (ignition protection class according to DIN EN 60079‑0)!
Non-compliance will lead to a risk of fatal injury from explosion! The connection must
always be carried out by a qualified electrician.
•
All monitoring devices outside the “spark-proof areas” must be connected via an in-
trinsically safe circuit (e.g. Ex-i relay XR-4...).
•
The voltage tolerance may not be higher than max. ±10 %.
Overview of possible monitoring devices for submersible mixers
with Ex rating
:
OPTI-TR 50-3 ...
EXCEL-TRE 50-3 ...
OPTI-TR 60-3 ...
EXCEL-TRE 60-3 ...
OPTI-TR 80-3 ...
OPTI-TR 90-2 ...
EXCEL-TRE 90-2 ...
OPTI-TR 120-1 ...
Motor compartment/sealing chamber
−
−
−
−
−
−
−
−
With IECEx certification
Motor winding: Temperature limiter
o
o
o
o
−
o
o
−
Motor winding: Temperature controller and
limiter
•
•
•
•
−
•
•
−
Pre-chamber (external pencil electrode)
o
o
o
o
o
o
o
o
With ATEX approval
Motor winding: Temperature limiter
o
o
o
o
o
o
o
o
Motor winding: Temperature controller and
limiter
•
•
•
•
•
•
•
•
