Fault Rectification - Maico DAQ/Ex Serie Montage- Und Betriebsanleitung

EN
ent conditions and anticipated restrictions. The
maintenance intervals are to be shortened in
case of dust or a corrosive atmosphere.
DANGER Danger of electric shock.
Prior to accessing the connection terminals, dis-
connect all supply circuits.
Secure against being switched back on, check
that no voltage is present.
Earth and connect the EARTH with active parts
which are to be short-circuited.
Cover or block off neighbouring live compon-
ents.
Attach a clearly visible warning sign.
Ensure that there is no explosive atmosphere
and/or dust layers.
CAUTION Hot motor surfaces may result
in skin burns if touched.
Do not touch hot motor surfaces. Always wait
until the motor has cooled down.
CAUTION Risk of injury if there is no
protection against accidental contact (pro-
tective grille) on the free air inlet/outlet.
In particular, there is danger if the unit is in-
stalled in a manner accessible to people.
Fan may only be operated with an access
guard.
Areas with possible access to rotating parts (im-
peller) should be made safe with an access
guard according to EN ISO 13857, e.g. with
MAICO protective grille SG.. (meets IP 20 de-
gree of protection according to EN 60529).
NOTICE Damage to the unit if the line feed-
through to the terminal box is pre-installed.
Line feedthroughs may be damaged if the con-
nection line is pulled or the unit is lifted by the
line.
Do not pull connection lines or lift the unit using
the lines.
19.1 Cleaning by a qualified person
Regularly clean unit at appropriate intervals with
a damp cloth, especially after long periods out of
service.
Clean unit at shorter intervals if you expect lay-
ers of dust to accumulate on the impeller and
other parts of the unit.
19.2 Maintenance by a qualified per-
son
The unit must be regularly checked and main-
tained. In particular, ensure:
• unimpaired flow in the air duct.
• the effectiveness of the protective grilles.
• compliance with the permitted temperatures.
• quiet bearings. Bearing life of 40 000 hours,
depending on application.
• cables are secure in the terminal box. Cable
screw connections in accordance with stand-
ard EN 60079-1 (Ex "d") must be used.
• potential damage to the terminal box, cable
screw-connections, sealing plugs and cables.
• secure routing of cables.
• Closures made of plastic or light metal alloys
are not permitted.
• Ex equipment sealing plugs or Ex component
sealing plugs must be in accordance with EN
60079-1, Annex C.
• Sealing plugs must not be used together with a
thread adapter.
During regular safety checks (maintenance inter-
val), undertake a complete check in accordance
with the previous test schedules.
This involves checking the function of safety
components, air gap, power consumption, bear-
ing noise, damage and disproportional vibration
(e.g. impeller imbalance). Remove dirt and for-
eign particles.
19.3 Exchange / replacement
Defective units are to be replaced with new
units.

20 Fault rectification

See Action to take in the event of a fault [} 10]
21 Disassembly and environ-
mentally-sound disposal
DANGER Danger of electric shock.
Prior to accessing the connection terminals, dis-
connect all supply circuits.
Secure against being switched back on, check
that no voltage is present.
Earth and connect the EARTH with active parts
which are to be short-circuited.
Cover or block off neighbouring live compon-
ents.
Attach a clearly visible warning sign.
Ensure that there is no explosive atmosphere
and/or dust layers.
• Only a qualified electrician trained in and au-
thorised for explosion protection work may un-
dertake disassembly.
Old devices and electronic components
may only be dismantled by specialists with
electrical training. Proper disposal avoids detri-
mental impact on people and the environment
and allows valuable raw materials to be reused
with the least amount of environmental impact.
Do not dispose of the following
components in household waste!
Old devices, wearing parts (e.g. air
filters), defective components, elec-
trical and electronic scrap, environ-
mentally hazardous liquids/oils, etc.
Dispose of them in an environment-
ally friendly manner and recycle
them at the appropriate collection
points (→ Waste Disposal Act).
1. Separate the components according to ma-
terial groups.
2. Dispose of packaging materials (cardboard,
filling materials, plastics) via appropriate re-
cycling systems or recycling centres.
3. Observe the respective country-specific and
local regulations.
Acknowledgements
© Maico Elektroapparate-Fabrik GmbH.
Translation of the original operating instructions.
Misprints, errors and technical changes are re-
served. The brands, brand names and protected
trade marks that are referred to in this document
refer to their owners or their products.
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