ENGLISH
Adjustable air grids
In case of connecting adjustable air grids
(manual or electronic controlling), a check is
required every 180 days:
- surfaces cleaning and checking;
- functioning verify (a correct opening and/or
control).
Precautions in case of keeping machine off
If the appliance is to be out of operation for a
lengthy
period, need to manage the following ispections:
• periodically, every 30 days or so, rotate the motor
and fan for a few seconds to prevent any damage
to the bearings. After that, a complete running test
is required (1 hour is advised);
• check all components: they need to maintain the
initial status, without signs of strains or noises;
• Disconnect the power supply from the electric
system, creating/putting an alert of "machine
off"
status.
Important: all QBK models have a thermal
protector that can temporarily make the motor stop.
Therefore do not access to the fan without
previously disconnecting it from the network.
In three-phase models such protection activates the
contactor circuit of the electrical installation.
26
Type of check
Safety systems
- checks and tests
Motors, fans, drive system:
- cleaning motorfan assembly;
- bearings, eventual replace
adjustable air grids
- check
Type of problem
•
Faulty power supply
•
Faulty electrical
1.
Safety
component
system
not working
•
Fan blades rotating in
wrong direction
•
Exccessive appliance
load loss
2.
Low air flow
•
Vents closed
•
Appliance load loss
less than nominal
3.
High air flow
•
Inspection panel open
•
Fan or motor bearings
worn
•
Fan vibration damper
too compressed
•
Unsuitable vibration
damper supports
•
Low balanging
tollerance in rotating
components
•
Rotating components
not properly fixed on
shaft (blades and/or
4.
Excessive
pulley)
noise and/or
•
Foreign bodies
vibration
interfering with rotating
components
•
Panel screws loose
•
Power supply missing
one phase
•
Incorrect mains
voltage
9 days 18
days 365 days
Probable cause
•
Electrician needed
•
Replace component
•
Help needed
•
Connect motor
correctly
•
Check the design
and/or appliance
•
Modification to fan
section needed
•
Open the vents and
check operating
function
•
Adjust vents and
check operating
function
•
Check the design
and/or appliance
•
Close inspection
panel
•
Replace bearings
•
Reposition fan
•
Help needed
•
Help needed
•
Balance or replace
rotating components
•
Help needed
•
Fully tighten the
screws on fan blades
and pulley
•
Clean inside the
appliance
•
Fully tighten fixing
screws
•
Check terminal
connections and
tighten if required
•
Compare voltage with
that shown on ID
plate
Action