Intended Use; Safety Instructions; Thermal Overload Protection - Maico EZR B Series Mounting & Operating Instructions

Axial-Rohrventilatoren EZR .. B,
DZR .. B und EZR 25/4 D

Intended use

EZR.. and DZR.. fans are used for extracting air
from or the ventilation of changing rooms,
prefabricated offices, restaurants, garages, business
and commercial premises, fitness rooms, etc
•
EZR .. B and EZR 25/4 D : AC model
•
DZR .. B and DZR 25/4 D: Three-phase AC
and pole-changing models
It is permitted to transport air or air-based
mixtures. It is not permitted to transport steam
saturated air, mixtures of gases, mist or vapours
or liquids and solids.
Operation is also not permitted in areas subject
to explosion hazards or in the area of inflam-
mable materials.
The fan may only be used when correctly installed
in ducts, if safety is guaranteed through safety
equipment in accordance with EN 294 or other
structural safety measures.
Modifications and changes to the device are not
permitted. MAICO is not liable for damage caused
by non-authorised use.
Fig. 1: Components/spare parts
Advice about ordering spare parts: Always
quote the print number 0185.0928.0002 of these
instructions, the rating plate number (on the housing)
and the relevant item number.
1 End cover
2 Motor
3 Strut (3 pieces)
4 Impeller
5 End cover
6 Duct sleeve
7 Terminal box
8 Capacitor (only with AC- motors)
Acknowledgements
© Maico Elektroapparate-Fabrik GmbH. This instruction is
a translation of the German original operating instructions.
We are not responsible for mistakes or printing errors and
retain the right to make technical modifications without
giving prior notice.
6

Safety Instructions

Read the instructions through carefully and
completely before you install the fan or
commission it. Keep the instructions somewhere
safe.
•
Installation should only be carried out by specialists
with knowledge and experience of ventilation
technology.
•
Only qualified electricians are permitted to make
the electrical connections and/or repairs.
•
During assembly and electrical installation, please
take note of the valid regulations, in particular
DIN VDE 01011 and the corresponding parts.
•
Before removing the safety devices, the fan must
be completely removed from the power supply.
•
If the fans are being used with air-ventilated
fireplaces, you must ensure that there is sufficient
flow of supply air.
•
The fan is designed in accordance with VDE
safety requirements within the framework of
the equipment and product safety legislation as
well as the pertinent regulations laid down in the
EC directives.

Thermal overload protection

•
EZR .. /DZR .. B fans: The fan motor is thermally
protected. It must be connected to an external
control unit with automatic switch-off, such as a
Maico MVE 10 or MVE 25 motor protection switch
for example or to a self-latching contactor circuit.
The control unit should not be able to switch itself
back on after being triggered.
•
EZR .. /DZR .. D fans: The fan motor is thermally
protected. It must be connected to an external
control unit with automatic switch-off, such as a
self-latching contactor circuit or a self-latching
motor protection switch for example. The control
unit should not be able to switch itself back on after
being triggered.
•
Before starting it up again, leave the fan
switched off long enough for the motor and the
temperature limiter to have cooled down.
Depending on the size and the temperatures
involved, the cool-down time could be up to
30 minutes. Only switch it back on again then.