Appendix
en
Installation and operating instructions Wilo-EMU TR 14-40
45
ƒ
Certification number (depending on the approval)
The certification number, if required by the approval, is printed on the rating plate.
13.3.2
Protection class
The motor’s design version corresponds to the following protection classes:
ƒ
Flameproof enclosure (ATEX)
ƒ
Explosionproof (FM)
ƒ
Flameproof enclosures (CSA-EX)
In order to limit the surface temperature, the motor must be equipped with at least one
temperature limiter (1‑circuit temperature monitoring). It may also be equipped with a
temperature controller (2‑circuit temperature monitoring).
13.3.3
Intended use
ATEX approval
The mixers are suitable for operation in potentially explosive atmospheres:
ƒ
Device group: II
ƒ
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:
ƒ
Protection class: Explosionproof
ƒ
Category: Class I, Division 1
Notice: If the cabling is carried out according to Division 1, installation in Class I, Di-
vision 2 is also permitted.
CSA Ex rating
The mixers are suitable for operation in potentially explosive atmospheres:
ƒ
Protection class: Explosion-proof
ƒ
Category: Class 1Division 1
13.3.4
Electrical connection
DANGER
Risk of death due to electrocution!
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 in accordance
with the locally applicable regulations.
ƒ
Always connect the mixer to an electrical outlet outside the explosive area. If the
connection 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.
ƒ
All monitoring devices outside the “spark-proof areas” must be connected via an in-
trinsically safe circuit (e.g. Ex-i relay XR-4...).
ƒ
The voltage tolerance may not be higher than max. ±10 %.
Overview of possible monitoring devices:
Type
TR 14
TR 16
TR 21
TR 22
TR 28
TR 36
TR 40
Motor compartment
o
o
o
−
o
−
−
Motor winding: Temperature limiter
•
•
•
o
•
o
o
Motor winding: Temperature controller and lim-
iter
o
o
o
•
o
•
•
Sealing chamber (external pencil electrode)
o
o
o
o
o
o
o
