6
6 Motor protection switch needed
Motor protection switches which meet the following
conditions are permitted, otherwise the conformity
ceases to apply:
●
Type-examination in accordance with Directive
2014/34/EU
.
● 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
E
stated on the rating plate
●
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 should be regularly checked and maintained
by an electrician trained in explosion protection
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
Switching unit on / off
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
responded. Unplug the fan from the mains in the
event of operational disturbances. Before switching
on again, have trained specialists perform trou-
bleshooting and remedy faults found. This applies
in particular after the motor protection switch has
tripped. If faults reoccur, send the unit to our factory
for repairs.
Mounting of unit by electrician trained
in explosion protection
12
Safety instructions
Under no circumstances use the unit for
purposes other than those for which it was
intended
Chapter 5.
!
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-bearing capacity and sufficiently dimensioned
mounting material. Mounting material is to be
supplied by the customer. During installation, do
not allow people to stand under the installation
location.
!
Explosion hazard due to incorrect adjust-
ment.
The rotating fan parts were adjusted in the man-
ufacturer's factory. The unit must not therefore be
taken apart. The temporary removal of the terminal
box cover during unit installation is the only excep-
tion to this restriction.
13
Transport, storage
!
DANGER
Danger from unit falling if transporting with un-
authorised transport equipment. Use lifting and
transport equipment suitable and approved for the
fan and transport weight.
Do not stand under a suspended load.
Note weight and centre of gravity (centre).
Ob-
serve the maximum permitted loading capacity for
lifting gear and means of transport. For total
weight
rating plate on title page.
During transport
do not place load on sensitive
components
, such as impeller or terminal box. Fit
transport equipment correctly.
!
CAUTION
Risk of cuts from metal housing plates
with sharp edges.
Wear personal protective equipment (cut-re-
sistant gloves) for installation.
●
Only ship unit in original packaging.
●
Store unit in dry location (-25 to +55 °C).
14 Technical data
Rating plate on title page or on unit.
Degree of protection of motor IP 54
Air volume, depending on type 310 to 870 m³/h
Rated voltage
230 V 1~ N
Power frequency
50 Hz
Sound power level
57 dB(A)
Vibration values (ISO 14694)
BV-3
Weight, depending on type
Rating plate
15 Ambient/operating conditions
●
Permitted ambient and airstream temperature:
-20 °C < Ta < +40 °C. For special versions
rating plate.
●
Division of maximum surface temperature into
classes. Temperature class T...
Rating plate.
Temperature class
T1 T2 T3 T4 T5 T6
Maximum surface
temperature [°C]
450 300 200 135 100 85
16 Mounting
During mounting, note the applicable installation
requirements
especially EU Directive 1999/92/
EC, EN 60079-14 and VDE 0100 (in Germany).
Mounting instructions
NOTICE
: Damage to the unit
Units with pre-installed line feedthrough to the
terminal box may be damaged if the connec
-
tion line is pulled or the unit is lifted using the
line.
Do not pull connection lines or lift the unit
using the lines.
Wall-mounted fans EZQ 20/4-E Ex e and
EZS 20/4-E Ex e
●
For permanent installation in wall or ceiling with
sufficient load-bearing capacity.
●
Any installation position.
●
Only mount unit on a level wall / ceiling surface to
avoid warping of the wall plate or wall ring.
UK