Maico MDR EC Series, Mounting And Operating Instructions

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VENTILATOREN
FR
MDR .. EC
FIG UK
DE
Fan does not switch on/does not run.
Cause 1:
No mains voltage, earth fault.
Measure:
Check whether the power supply is
guaranteed (mains fuse, service switch, motor
connection).
Cause 2:
Wiring not carried out correctly.
Measure:
Check wiring

connection wiring
diagram.
Cause 3: Thermal motor protection has trig -
gered (motor is overheated).
Measure: Ensure that the air ways are free, re -
move foreign objects if necessary. Check room
temperature. Check voltage. If necessary, install
air filter in duct system.
Cause 4: The impeller is blocked or dirty.
Measure: Remove foreign objects or dirt.
Fan runs too slowly / volumetric flow too low
Cause 1:
Impeller is rubbing
Measure: Remove foreign objects or dirt.
Cause 2: Deposits on the impeller and in the
housing caused by dust in the air.
Measure: Install air filter in duct system. Ensure