Semi-centrifugal duct fans
ERM.. and DRM..
Intended use
ERM.. and DRM.. fans are used
for air extraction
or ventilation
of commercial premises, canteens,
production sites, fitness rooms, workshops, labo-
ratories, conservatories etc.
They are also used in air extraction systems for
machine and workplace extraction or manufacturing
areas.
•
ERM.. : standard model single-phase AC motor
•
DRM..: special version three-phase AC motor
It is permitted to transport air or air-based
mixtures
. It is not permitted to transport gasses,
mist or vapours or mixtures thereof, as well as
liquids and solids. Operation is also not permitted
in areas subject to explosion hazards or in the area
of inflammable materials.
The fan may only be used when correctly installed
in ducts, if safety is guaranteed through safety
equipment in accordance with DIN EN 294 or other
structural protective 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 0185.0845.0008 of these
instructions, the rating plate number (on the housing)
and the relevant item number..
1
Inlet flange
2
Impeller
3
Motor
4
Housing
5
Terminal box
6
Capacitor (only with ERM..)
Fig. 2 ERM../DRM.. with duct connection on
both sides
Fig. 3 ERM../DRM.. with duct connection on
one side / free inlet
Fig. 4 ERM../DRM.. in vertical installation
position, with downwards air flow direction
System components
A
Fan ERM.. /DRM..
B
REM.. reducer
C
ELM.. flexible cuffs
D
Duct / flexible duct
E
FUM.. mounting foot
F
SGM.. protective grille
G
Ceiling / wall / girder
Safety instructions
Read the instructions through carefully and
completely before you install the fan or
commission it. Keep the instructions some-
where safe.
•
Installation should only be carried out by
specialists with knowledge of and experience in
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 0100 and the pertinent sections.
•
The fan motor is thermally protected. It must
be connected to an external control unit with
automatic switch-off, such as the Maico
MVE 10 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.
Before starting it up again, leave the fan switched
off long enough for the motor and temperature
limiter to cool down. Depending on the size and
the temperatures involved, the cool-down time
could be up to 30 minutes. Only then should you
switch it back on.
•
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
supply air intake.
•
The fan is designed in accordance with VDE
safety requirements within the framework of the
equipment and product safety act as well as the
pertinent regulations laid down in the EC
directives.
– Subject to change ! –
6
Summary of Contents for ERM 15
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