Installation, Use and Maintenance Manual - CFR micro / CFR micro E Series
page 34
Installation, Use and Maintenance Manual - CFR micro E Series
page 34
SECTION 7 - BREAKDOWN DIAGNOSTIC
SECTION 8 - DISMANTLING
At the end of their use the units will be disposed of, in observance of the norms in force.
In particular, the European Directive 2002/96/CE about the electric and electronic equipments wastes, prescribes the waste disposal outside
the normal waste flow. The materials of the dismantled units have to be separately picked up to optimise the recycling of the materials that
constitute them and prevent possible damages for health and environment.
The materials that compose the units are:
• Galvanized plate
• EPS (expanded polystyrene)
• Polyethylene
• ABS plastic (acrylonitrile butadiene styrene)
• NBR (nitrile butadiene rubber NBR)
When the failure cannot be easily solved, you have to disconnect the equipment from electrical power and contact the manufactu-
rer or an authorized technical assistance centre, having care of quoting the identification data of the unit that you can find on the
correspondent label.
SYMPTOMS
POSSIBLE CAUSE
Fans doesn’t work:
No power supply.
The switches of the thermostat are not in the right position of working.
There are foreign bodies that block the rotors.
Electrical connections are released.
Motor out of the absorption:
Pression is low than what is required and then the air flow is excessive.
It mustincrease pressure drops with dampers and regulators.
Excessive density of the fluid. Rotation speed too high.
Excessive air flow
Pressure drop of the system are overvalued.
Insufficient air flow:
Pressure drop of the system are underestimated.
Cloggings in the air ducts.
Rotation speed too low:
verify on the terminal board of the motor that the connection is correct and that the volta-
ge correspond to that of the nameplate.
The rotor turn backwards.
Noise:
Excessive air flow.
Wear or crack in the pads.
Unbalanced fan.
Foreign bodies in the case.
Strong vibrations:
Unbalanced impeller because of wear or of dust deposit.
Sliding of the impeller on the case due to deformations.
Cloggings in the air ducts
6.3 Yearly controls
• Verification of the whole electrical installation and in particular the tightening of the cable connections.
• Verification of the tightening of all bolts, nuts, flanges and water connections that could be loose because of vibrations.
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