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e-MovAir-IOM-20.04-EN
24
e-MovAir-IOM-20.04-EN
11.0. SAFETY STANDARDS
MALFUNCTION POSSIBLE CAUSES
CHECK
POSSIBLE SOLUTION
Incorrect motor
power input
Excessive flow-rate
Fan flow rate, static
pressure and speed.
Decrease the speed of the
fan, increase the pressure
drop by closing the dampers
Excessive air
flow-rate
Pressure drop in the
distribution system
overestimated
Fan flow rate, static
pressure and speed.
Decrease the speed of the
fan
Inspection doors open or
panels missing
Check doors and panels.
Close the doors and panels
Filters not inserted
Check filtering sections.
Insert the filters.
Insufficient air
flow-rate
Pressure drop in the
distribution system
overestimated.
Fan flow rate, static
pressure and speed.
Increase of the speed of the
fan according to the power
of the motor and the max
speed of the fan
Filters dirty and/or coils
fouled and/ or humidification
media fouled and/or
obstructions in the air circuit
(ducts, grills, etc..)
Cleanliness of the
components.
Clean.
Dampers not calibrated
correctly
Damper
Calibrate the damper
The impeller turns in the
wrong direction
Visually using the arrow
on the scroll.
Change the electrical
connections to the motor.
Noise
Excessive flow-rate
Flow-rate
Reduce the flow-rate
Fan unbalanced
Vibrations on the base
Replace the fan
Howling of the magnetic
motor
Mains voltage
Restore correct mains
voltage
Foreign material in the scroll
Fan
Remove foreign bodies and
check for damage.
Entrainment of
water
Excessive flow-rate
Flow-rate
Reduce the flow-rate
Drain trap clogged
Clogging of the drain
trap
Clean the drain trap
Drain trap absent
Presence of the drain
trap
Install a drain trap
Excessive wear
on the belts
Loose belts
Belt tension
Tighten the belts
Pulleys misaligned
Pulley alignment
Align the pulleys
Desired outlet
temperature not
reached
Excessive air flow-rate
Air flow-rate
Reduce the flow-rate
Air inlet temperature not
envisaged
Air inlet temperature
Increase air recirculation
Presence of air in the coil
Air vent
Vent the air
Insufficient water flow-rate
Water flow-rate
Increase the flow-rate
Insufficient water
temperature
Water inlet temperature
Increase the temperature
Thermodynamic circuit Off
Check thermodynamic
failure
Thermodynamic circuit On
The damper
doesn’t open
Locked
Damper gears.
Repair the gears and
remove foreign objects
Damper frame not
square
Adjust the damper frame to
make it square
Uncoupled damper shaft
Adjust the damper frame to
make it square
