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