Maico EZQ 20/4-E Ex e Instructions De Montage Et Mode D'emploi page 8

UK
5 Non-intended use
The fan unit must not be used in the following
situations under any circumstances. There is a
risk of death. Read all the safety instructions.
EXPLOSION HAZARD
EX
Explosion hazard due to ignition of explo-
!
sive substances if operating without motor
protection switch . For use in explosive gas
atmospheres, operate only with a motor-protec-
tive circuit-breaker marked at least II (2) G in
accordance with Directive 2014/34/EU. For use in
explosive dust atmospheres, operate only with a
motor-protective circuit-breaker marked at least
II (2) D in accordance with Directive 2014/34/EU.
Explosion hazardfrom operating several
!
fans in parallel with one single motor-protective
circuit-breaker. Reliable tripping is not always
guaranteed in the event of a fault.
Do not under any circumstances operate several
fans in parallel with one single motor-protective
circuit-breaker.
Explosion hazard due to spark formation
!
by the impeller scraping on the housing if the
air gap is too small. Ensure a large enough air
gap all the way round between the impeller and
housing.
Explosion hazard when moving explosive
!
liquid particles (e.g. dye), which may stick to
the fan. Do not under any circumstances use fan
to move explosive liquid particles.
Explosion hazard during operation with
!
abrasive media. Abrasive media must be avoided.
Explosion hazard when operating outside
!
the ambient and operating conditions, especial-
ly due to overheating when operatingoutside
the permitted usage temperature.
Only operate fan within the permitted ambient
and operating conditions and permitted usage
temperature.
Explosion hazard when operating without
!
protective device should foreign bodies fall or
be drawn into the air channel  Risk of death
due to spark formation. Be sure to fit a protective
device according to EN 60529, e.g. MAICO pro-
tective grille SG... on an uncovered air inlet/outlet.
(IP 20 degree of protection). Protection against
reaching in (protective grille in accordance with
EN 13857) is required on both sides.
Explosion hazard if the explosive atmos-
!
phere cannot be removed if the supply air in-
���������� . This can arise if e.g. rooms
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Ensure sufficient supply air intake. Operate fan in
permissible air power range.
Explosion hazard when operating with
!
frequency converter for speed control. Bearing
currents may be a direct source of ignition.
Operation with frequency converter not permitted.
Explosion hazard due to unauthorised
!
conversions on unit, incorrect mounting or
damaged components. Danger if installation/
������������������������
��� Operation not permitted if unit is modified,
mounting is incorrect or components are damaged.
Unit is not approved if mounting work is carried out
by unqualified staff.
Danger of explosion when operating with
!
dust layers on the motor. To avoid overheating
regular inspection and cleaning is imperative.
6
CAUTION
!
Danger of injury if there is no protection against
reaching in/contact (protective grille) on un-
covered air inlet/outlet, especially if people can
access the fan. Fan may only be operated with
protection against reaching in on both sides.
Areas with potential access to rotating parts (im-
peller) should be made safe with protection against
reaching in in accordance with EN ISO 13857, e.g.
MAICO protective grille SG.. (satisfies IP 20 degree
of protection in accordance with EN 60529).
6 Motor protection switch needed
Motor protection switches which meet the following
conditions are permitted, otherwise the conformity
ceases to apply:
● Identification in accordance with Directive at least
II (2) G for use in gas atmospheres or II (2) D for
use in dust atmospheres.
● Identification in accordance with Directive at least
II (2) G.
The motor protection switch must be wired in
accordance with wiring diagram Fig. D. The motor
protection switch should be set to the nominal motor
current (not I ).
max
Tripping must occur:
● in the time t stated on the rating plate
E
● after short-circuits
Once all causes of faults have been eliminated, the
connected motor must not start up again automat-
ically. It may only be switched on again manually
(switch-on inhibit).
For optimum protection, we recommend the MAICO
MVEx 0.4 motor protection switch type examined in
accordance with Directive 2014/34/EU – please note
the MVEx 0.4 operating instructions.
7 Duties of the installer and the operating
company
The fan may only be operated at permissible ambi-
ent and airstream temperatures of -20 to +40 °C and
only if fully mounted.
The fan must be regularly inspected and maintained
by a qualified person as described in chapter 3 of
this manual  Chapter 19.
Cleaning and maintenance intervals should be
determined by the operating company in accord-
ance with EN 60079-17 – frequency depends on
ambient conditions and anticipated limitations.
Shorten the maintenance intervals in the event
of dust or a corrosive atmosphere. Additional
safety requirements should be observed during
mounting and operation, e.g. in accordance with
● EC Directive 1999/92/EC, ATEX 137: implement-
ed in Germany with the Ordinance on Industrial
Safety and Health.
● EN 60079-14: Design, selection and erection of
electrical installations.
● the national accident prevention requirements.
8 Safety instructions for users
DANGER
!
Explosion hazard due to spark formation if
foreign bodies are inserted into the unit. Do not
insert any objects in the unit.
CAUTION
!
Danger of injury due to rotating impeller and
suction. Hair, clothing, jewellery etc. may be
pulled into the fan if you get too close to it.
During operation always keep far enough away to
prevent this from happening.
CAUTION
!
Risks for people (including children) with
reduced physical, sensory or mental capabili-
ties or a lack of knowledge. The fan may not be
used or cleaned by children or people with reduced
capabilities.
CAUTION
!
Hot motor surfaces may result in skin burns if
touched. Do not touch hot motor surfaces. Always
wait until the motor has cooled down.
9 �����������
The fan is switched on or off with an optional switch.
The fan is designed for continuous operation (S1).
Frequently switching on/off may result in improper
heating and should be avoided.
10 Reversing mode
Special version with modified air flow direction on
request.
11 Action to take in the event of a fault
Check whether the motor protection switch has re-
sponded. Unplug the fan from the mains in the event
of operational disturbances. Before switching on
again, have qualified staff ( Chapter 3) determine
the cause of the fault and remedy it. This applies
in particular after the motor protection switch has
tripped.
Mounting of unit
12 Safety instructions
Under no circumstances use the unit for purpos-
es other than those for which it was intended 
Chapter 5.
The installation may only be carried out by
i
a person as described in chapter 3.
DANGER
!
Danger from electric shock. Whenever work-
!
ing on the fan, release the supply current circuits,
secure to prevent them from switching on again
and ensure the unit is de-energised. Attach warning
sign in clearly visible place. Ensure that there is no
explosive atmosphere.
Explosion hazard. Degree of protection is
!
not ensured if the cables are incorrectly insert-
ed into the terminal box.
Ensure degree of protection by correctly inserting
the cables into the terminal box.
Explosion hazard when operating with unit
!
not fully mounted and if air inlet/outlet is not
correctly protected.
The fan may only be operated if the unit is fully
mounted and with the protective devices (EN 60529)
for the air channel fitted. Ensure that foreign bod-
ies cannot be sucked into the unit and ducts.
Explosion hazard/danger of injury from an
!
incorrectly mounted fan or a falling fan (unit
has a high inherent weight).
Only mount on walls/ceilings with sufficient load-be-
aring capacity and sufficiently dimensioned moun-
ting material. Mounting material is to be supplied
by the customer. During installation, do not allow
people to stand under the installation location.