Vortice QBK HE SAL Notice D'emploi Et D'entretien page 16

ENGLISH
Bearings
During cleaning maintenance, please keep on mind
the following instructions:
1. The bearings of the electrical motors should not
need any maintenance, nonetheless it is advised
not to exceed the limit of 15.000 - 20.000 hours of
ensured working.
2. Other bearings, involved in transmission groups,
need to be replaced every 10.000 - 15.000 hours
depending on the temperature conditions and
humidity of the circulating air.
3. Special bearings , self-covered with external
greasers, are involved in special conditions and, in
general, they don' t need either maintenance.
Their life, in designed extreme conditions, usually
don' t exceed 500 - 1000 hours of working time. It
is very important never mix grease with different
chemical compositions and viscosities.
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).
Type of check
Safety systems
- checks and tests
Motors, fans, drive system:
- cleaning motorfan assembly;
- bearings, eventual replace
adjustable air grids
- check
Precautions in case of keeping machine off for a
long time
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.
16
9 18 12
days days days
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Type of problem Probable cause
•
Faulty power supply
•
Faulty electrical
1.
Safety system
component
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
4.
Excessive
shaft (blades and/or
noise and/or
pulley)
vibration
•
Foreign bodies
interfering with
rotating components
•
Panel screws loose
•
Power supply missing
one phase
•
Incorrect mains
voltage
Action
•
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 operatingfunction
•
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