7
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For reducers for connecting to other duct diame-
ters
Internet.
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To avoid the transmission of vibrations to the duct
system, we recommend mounting flexible cuffs,
mounting foot and vibration dampers.
Checks before mounting
1. Perform the following checks: D = detailed
check, N = close inspection, S = visual inspection
Test schedule
D N S
I
Unit corresponds to EPL/zone
requirements of the installation
location.
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II
Correct device group.
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III
Correct temperature class for units.
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IV
Degree of protection (IP degree)
of units corresponds to level of
protection / group / conductivity.
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V
Unit power circuit name present
and correct.
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VI
Housing and connections
satisfactory.
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VII
Before installing, check that the
motor bearing is working properly.
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Unit mounting
1. Check unit for transport damage.
2. Prepare installation location for duct, wall or foot
mounting: Lay ventilation duct or flexible duct.
If mounting on wall, 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-resistant gloves) for installation.
4. RRK .. Ex: Transport fan to installation location.
Note safety instructions and data in chapters 12
to 15.
!
DANGER
The
fan may vibrate during operation.
Should the
attachment come loose, there is a
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.
5. If mounting with mounting foot: Mount suitable
mounting foot on fan housing with the self-cutting
tapping screws provided (do not use screws near
the impeller). Any installation position. Make sure
that there is free access to terminal box at the
installation location.
6.
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.
!
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
.
7. If the air inlet or outlet is not covered, mount a
permitted protective grille in front of the unit
Figure C.
8.
Ensure a sufficient fresh air supply intake.
9. Fit suitable insulation, sound-deadening and
installation material.
17 Electrical connection
Fig. D
!
DANGER
Danger from electric shock.
Before accessing
the connection terminals, release all power supply
circuits, protect against switching on again, ensure
unit is de-energised, earth and connect the EARTH
with active parts which are to be short-circuited,
and cover or make inaccessible adjacent energised
parts. Attach warning sign in clearly visible place.
Ensure that there is no explosive atmosphere.
!
EXPLOSION HAZARD
Danger of short-circuits through confusion
and incorrect wiring of mains connection and
connection to operating capacitor.
It is essential that the unit is wired correctly as
shown in the wiring diagram.
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.
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with mains disconnector with a contact opening
of at least 3 mm per pole.
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with permitted voltage and frequency
rating plate.
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with explosion protection terminal box provided.
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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.
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if operating in intended air power range.
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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
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
1.4 Nm
Mantle terminals
2.5 Nm
M20 x 1.5 cable feedthrough:
3x connection thread
Cap nut
Clamping range
2.3 Nm
1.5 Nm
7 ... 13 mm
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.
Direction of rotation and air flow
1.
Check direction of rotation and air flow
Arrows
on fan housing.
Motor protection switch, on/off switch
1. Install motor protection switch and wire in accord-
ance with wiring diagram (
wiring diagram, Fig.
D, terminals 4, 5 and 6).
i
UK
2. Set motor protection switch to nominal motor
current (not I
max
).
3.
Fit an On/Off switch provided by the customer.
Checking electrical connection
1. Perform the following checks: D = detailed
check, N = close inspection, S = visual inspection
Test schedule
D N S
I
Screws, cable and line feeds
(direct and indirect), blind closures
are of the correct type, complete
and sealed
.
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II
Cable and line type fit for
purpose.
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III
No visible damage on cables and
lines.
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IV
Electrical connections secure.
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V
Unused connection
terminals tightened.
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VI
Insulation resistance (IR) of motor
windings satisfactory.
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VII
Earth connections, including any
additional potential compensation
connections, are correct
(e.g. connections are tight, conduc-
tor cross-sections are sufficient).
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VIII
Error loop impedance (TN
system) or earth resistance (IT
system) satisfactory.
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IX
Automatic electrical protective
equipment set correctly (automatic
resets not possible).
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X
Special operating conditions are
satisfied (motor protection switch).
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XI
All cables and lines which are not
being
used are connected correctly.
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XII
Installation with changeable
voltage in agreement with the
documentation.
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XIII
Electrical insulation clean/dry.
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2. Fit terminal box cover for explosion protection.
Ensure that there are no dirt particles in the
terminal box and that the seal of the terminal box
cover has close contact all the way around the
terminal box. Note tightening torques of 1.4 Nm.
Check seal integrity of terminal box.
18 Commissioning
Checks before commissioning
1. Perform the following checks: D = detailed
check, N = close inspection, S = visual inspec-
tion
Test schedule
D N S
I
No damage or unauthorised
changes on unit.
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II
Condition of terminal box seal
satisfactory. Ensure connections
are sealed.
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III
No evidence of water or dust
entering the housing in compliance
with the IP rating.
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IV
Encapsulated components undam-
aged
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V
Check capacitor for leak
tightness..
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VI
Air flow not hampered. No foreign
bodies in the air section.
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VII
Sealing of shafts, cables, ducts
and/or conduits satisfactory.
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VIII
Conduit system and transition to
mixed system undamaged.
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