Possible Causes; Possible Solutions - Modine VCC Série Manuel Technique

Problem
The fan motors do not rotate
The model vibrates
The noise level of model
is too high
Closing Instructions
22
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Possible causes

Interruption of the electric power line (conductors,
disconnecting switches, regulators, pressure switches, etc)
Intervention of
thermal protection
of fan motors
Burning of motor windings
Fan motor fastening screws
Loosened fan motor fastening screws
Unbalanced fan motors
Obstructed finned pack
Unbalanced fan motors
Worn out fan motor bearings
Defective, broken or inappropriate anti-vibration joint
Defective, out of order or inappropriate silencer
Suction air temperature
of fan motors beyond
allowed limits
Obstruction of
the finned pack
Fan motor blades
blocked by
foreign objects

Possible solutions

Check electric power line up to
fan motor junction and reset
Check project figures and data
especially the ambient and
condensing temperatures
Clean finned pack and carry out
maintenance more frequently
Remove obstacles
Replace burnt motors
Adequately fasten model
Restore correct fastening
Replace unbalanced fan motors
Clean finned pack or carry out
maintenance more frequently
Replace unbalanced fan motors
Replace noisy fan motors
Replace the joint
Replace silencer