EN
12.3. Fault current protection switch
The use of a fault current protection switch is not mandatory. If a fault current protection switch is used, only AC/DC sensitive RCD
protective devices (type B or B+) are permitted.
Even when the device is switched off, voltage is applied to terminals and connections. Do not touch the
device for 5 minutes after all-pole disconnection from the mains.
13. COMMISSIONING
Commissioning by trained technical personnel may only be performed after any risk has been ruled out.
The following checks should be performed in accordance with the installation and operating manual and
the regulations in force:
■
Correctly sealed installation of the unit and duct system.
■
Check the duct system, unit and medium lines, if present, remove any foreign bodies if necessary.
■
The intake opening and inflow into the unit must be clear.
■
Check all mechanical and electrical protection measures (e.g. earthing).
■
Voltage, frequency and type of current must correspond with the rating plate.
14. MAINTENANCE AND CLEANING
Servicing, troubleshooting and cleaning may only be performed by specialised personnel in accordance
with this installation and operating manual and the regulations in force.
■
Make sure that no connections or components are loosened unless the device is disconnected from the mains. Make
sure that the equipment cannot be switched back on again.
■
Individual components must not be interchanged. For example, the components intended for one product may not
be used for other products.
■
The regular maintenance and care of our devices is designed to ensure proper function, value retention and avoid-
ance of damage. Keep a maintenance log.
■
Perform the specified maintenance on the unit at the specified intervals.
Our devices require little maintenance when operated properly.
The following work should be performed at regular intervals, in accordance with health and safety regulations:
■
Check the operation of the control system and safety devices.
■
Check electrical connections and wiring for damage.
■
Remove any dirt from the fan impeller or impellers and from inside the fan housing in order to prevent any unbal-
ance or reduction in output.
– Do not use aggressive or easily flammable products for cleaning (impellers/housing).
– Preferably only water (not flowing water) or mild soapsuds should be used.
– The impeller should be cleaned with a cloth or brush.
– Never use a high-pressure cleaner.
– Balancing clips must not be moved or removed.
– The impeller and fittings must not be damaged in any way.
Before putting the unit back into operation after maintenance and servicing work, carry out a visual inspection as described in sec-
tion 12 and 13.
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Summary of Contents for MPS 225 E2 21
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