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High Performance Fan for installation in
wall or ceiling
Note:
Read through these instructions carefully and
completely before attempting to install the fan.
Prescribed use: MAICO accepts no liability for
damage caused as a result of application not in
accordance with the intended use of the equip-
ment.
Important notes
Electrical connection and repairs may only be
carried out by suitably qualified experts.
The fan may only be operated at the rated volt-
age specified on the rating plate.
Electrical and appliance installation must be
carried out in accordance with the valid regula-
tions, in particular DIN VDE 0100 with the sec-
tions.
The installation must be equipped with a mains
disconnecting device with a contact opening of
at least 3,5 mm at each pole.
Threephase motors DZ.. must be fitted with a
protection device against overloading.
– Three phase motors (except pole-changing
motors) with thermal overload protection are
used as standard with heat detectors in the
coil. The connections are leaded floating to
the terminal.
1. PTC-resistor, circuit breaker must be pro-
vided by the customer.
2. Thermal contact in connection with motor
protection switch MV 25.
– Motor protection for the pole changing three
phase motors must be provided by the cus-
tomer.
AC motors with thermal overload protection are
used as standard. The motor is automatically
switched off in case of thermal overload and
back on again after cooling.
Maximum permissible ambient temperature
see specification in the valid Maico catalogue.
The ball bearings must be checked for quiet
running at least once a year, and if necessary
exchanged for new ball bearings lubricated with
original bearing grease.
The fan may only be put into service when the
accidental impeller contact protection is pro-
vided in accordance with DIN EN 294. For ex-
ample using The Maico louvre shutter AS... or
RS...
Devices with a VDE-GS label have been safety-
checked by the VDE.
Air flow direction
Fig. 1:
Air flow direction "A" (air drawn across the motor)
Air flow direction "B" (air blow across the motor)
Preliminary Work
Break through the wall.
– When working in masonary, finish the opening
with plaster.
Installation
The mounting surface must be perfectly even.
The mounting hardware must be provided by
the customer.
– A secure, lasting fixture must be guaranteed.
– Only use screws of at least strength category
4.8 in accordance with DIN 267.
When using the extension ducting sleeve VH....
install the fan with the extension ducting sleeve
always attached.
Electrical connection
In accordance with the wiring diagram on the
motor or in accordance with the wiring diagram
in Fig. 1.
When using EZQ/EZS-fans, you have to
connect the condensator in accordance with
the wiring diagram.
Mounting the terminal box:
Insert the mains conductor optionally from be-
low or from the side. Break out the cable open-
ing and insert the plastic grommet. See also the
information provided on the lid of the terminal
box.
Speed control
Frequency converters with the following limiting
values can also be used to control speed:
1) U peak < 1000V
2) du/dt
If these values cannot be adhered to, the frequency
converters must be equipped with sine filters.
Technical Data
See the rating plate or valid Maico catalogue.
Spare parts
Fig.2: Overview
Remark relating to spare parts orders: Always
specify the publication number of these instruc-
tions 0185.0923.0005, the rating plate number "X"
of the unit and the relevant position number.
1/2
3/5
4/6
7/8
9
– Subject to change ! –
< 500V/µs
Protection grille/Motor
Impeller
Mounting plate/Struts
Angle/Lid of the motor
Capacitor (AC Motors)
GB
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