Intended Use; Predictable Misuse; Technical Data - Maico EZQ .. B series Montage- Und Betriebsanleitung

Thermal overload protection
The fan motor has thermal protection
(temperature sensor in the motor winding).
Exceptions: DZQ 25/4 D, DZS 25/4
D and all pole-changing units do not
have thermal overload protection.
This must be provided by means of
a motor protection device supplied
by the customer.
EZQ../EZS.. single-phase AC models
The overload protection automatically
switches the fan off in the event of overload
(overheating) and back on again once it has
cooled down.
DZQ../DZS.. three-phase AC models
The thermal contacts are terminal
connections and must be connected to an
external control device with automatic, self-
holding switch-off function. For example, a
Maico motor protection switch MV 25 or a
contactor control with self-holding function.
The overload protection automatically
switches off the fan via the external control
device in the event of overload (overheating).
The fan must remain switched off long
enough for the motor and temperature limiter
to cool down, before starting the fan back up.
Depending on size and temperature condi-
tions, it may take up to 30 minutes to cool
down. Only switch unit on after this.

2.4 Intended use

● EZQ/DZQ/EZS/DZS are wall-mounted
fans for domestic-type and light
commercial use.
● The fans are used for air extraction or
ventilation in production areas, commercial
premises, garages, warehouses,
showrooms, production sites, industrial
buildings, compressor/transformer rooms
or other commercial premises.
2. Product information │ EN
● Operation is only permitted:
● with permanently routed electrical supply
line.
● in walls, on ceilings or on brackets with
sufficient load-bearing capacity.
● if unit is completely installed.
● With free air intake or discharge, operation
is only permitted with protection against
accidental contact according to EN ISO
13857, for example with a Maico protect-
tive grille SG.

2.5 Predictable misuse

Maico is not liable for damages caused by
use contrary to the intended use. Under no
circumstances should the unit be used:
● for conveying steam-saturated air or
greasy air.
● for conveying solid particles which may
stick to the fan.
● close to flammable materials, liquids or
gases.
● for conveying chemicals, aggressive
gases or vapours.
● in explosive atmospheres.
● with a free air entry or exit, if there is no
protection against accidental contact with
the impeller in accordance with EN ISO
13857.

3. Technical data

For technical data, refer to the rating plate.
Degree of IP54* or IP 55*, depending on
protection unit variant
Air volume 475 to 15,000 m³/h, depending
on unit variant
Weight 3.7 to 40 kg, depending on unit
variant
r ≈ 1
Specific
pressure ratio
*
Protection only guaranteed in horizontal
installation position or, in the case of
vertical installation, with downward air flow.
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