Maico EZQ 20/4-E Ex e Instructions De Montage Et Mode D'emploi page 9

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 64
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 for gas atmospheres. Temperature class
T...  Rating plate.
Temperature class T1 T2
Maximum surface
450 300 200 135 100
temperature [°C]
For use in dust atmospheres, the surface tempera-
ture specified on the nameplate is relevant.
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/t and
EZS 20/4-E Ex e/t
● 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.
Checks before mounting
1. Perform the following checks: D = detailed
check, N = close inspection, S = visual inspection
Test schedule
Unit corresponds to EPL/zone
I
requirements of the installation
location.
II Correct device group.
III Correct temperature class for units. ●
IV Degree of protection (IP degree)
of units corresponds to level of
protection / group / conductivity.
V Unit power circuit name present
and correct.
Housing and connections
VI
satisfactory.
Before installing, check that the
VII
motor bearing is working properly.
Unit mounting
1. Check unit for transport damage.
2. Make a breakthrough at the installation location.
Make sure there is a level support surface.
3. Lay a permitted power cable to the installation
location. Use a connection cable suited to the
unit type.
CAUTION
!
Risk of cuts from metal housing plates
with sharp edges.
Wear personal protective equipment (cut-re-
sistant gloves) for installation.
4. EZQ / EZS 20/4-E Ex e/t: Transport fan to instal-
lation location. Note safety instructions and data
in chapters 12 to 15.
DANGER
!
fan may vibrate during operation.
The
Should the
risk of death if the fan falls as a result of its
inherent weight.
Only mount on walls/ceilings with sufficient
load-bearing capacity and sufficiently dimensioned
mounting material.
NOTICE
T3 T4 T5 T6
Risks of leakages if unit is not sealed tightly
85
enough. Firmly screw fan down at all flange holes.
5. Install fan and firmly screw fan down to wall at
all flange holes [X] (4 items). Mounting material
of the sufficient size should be provided by the
customer. Note direction of rotation and air flow
 air direction arrows on unit sticker.
6. Check air gap between impeller and housing after
mounting with the gauge provided  Fig. B.
DANGER
!
Explosion hazard when operating without pro-
tective device should foreign bodies fall or be
drawn into the air channel  Risk of death due
to spark formation. Use an approved protective
grille to protect the impeller from contact, anything
falling in and foreign bodies being sucked into the
air channel .
D N
● ●
● ●
●
● ●
● ●
● ●
● ●
attachment come loose, there is a
7. If the air inlet or outlet is not covered, mount a
permitted protective grille, e.g. MAICO protec-
tive grille SG... in front of the unit.
8. Ensure a sufficient fresh air supply intake.
9. Fit suitable insulation, sound-deadening and
installation material.
17 Electrical connection  Fig. D
DANGER
!
Danger of electric shock.
S
● Prior to accessing the connection terminals
●
disconnect all supply circuits.
● Secure against being switched back on, check
that no voltage is present.
● Earth and connect the EARTH with active parts
which are to be short-circuited.
●
● Cover or block off neighbouring live parts.
● Attach a clearly visible warning sign.
Ensure that there is no explosive atmosphere
●
and/or dust layers..
●
NOTICE: Damage to the unit
No speed control allowed.
●
Operation only permitted:
● with permanent electrical installation.
● with connection cable permitted for explosion risk
areas and load.
● with mains disconnector with a contact opening
of at least 3 mm per pole.
● with permitted voltage and frequency
 rating plate.
● with explosion protection terminal box provided.
● with protective-conductor terminal, at mains end
in terminal box. There is a terminal on the outside
of the fan for earthing a duct system.
● if operating in intended air power range.
● at permitted operating point. The current and
power stated on the rating plate are measured
with free suction and free blow-out. They may be
higher or lower depending on the operating point.
A motor protection switch is essential for
i
thermal fusing.
Connect the fan electrically
1. Switch off power supply circuits, position a visible
sign warning against being accidentally switched
back on.
2. Open terminal box, route cables into terminal
box and screw down with cable feedthrough.
Note tightening torques (in Nm at 20 °C). Check
tightness and tighten if necessary.
Terminal box cover:
M4 stainless steel cylinder head bolts
Mantle terminals
M16 x 1.5 cable feedthrough:
Connection thread
Cap nut
Clamping range
Clamping range + set of reduction
seals
M20 x 1.5 cable feedthrough:
Connection thread
Cap nut
Clamping range
Clamping range + set of reduction
seals
M20 x 1.5 sealing plug:
3. Wire fan  wiring diagram Fig. D.
Insulate any unnecessary cable cores.
Earthing of fan and duct system
1. Connect PE conductor at mains end in terminal
box with explosion protection.
2. Connect PE conductor duct system to terminal on
outside of fan.
UK
1.4 Nm
2.5 Nm
1.8 Nm
1.3 Nm
4.5 ... 9 mm
2 ... 6 mm
2.3 Nm
1.5 Nm
7 ... 13 mm
4 ... 8 mm
1.0 Nm
7