Maintenance And Cleaning - Vortice QBK Manual De Instrucciones

ENGLISH

Maintenance and cleaning

Fig. 7
It is recommended a complete check up of the fan and its installation after the first 24 hours after start up, by
electronically disconnecting it from the network in order to avoid accidents. Vortice suggest usage of security
switches specially made for this purpose.
General notes for the maintenance
During maintenance operations, please take note of the following points:
1. The functioning of the fan must be smooth and free of vibrations.
2. The absorbed current (A), measured tools, cannot exceed the nominal consumption specified in the motor's
plate.
3. All screwed elements must be checked that they have not been loosened.
4. In applications where the fan works in a high dust or greasy air environment, the blades of the impeller or
propeller can be unbalanced due to the accumulation of particles and consequently damage the bearings.
Therefore, cleaning of the rotating element must be done periodically using the maintenance stops or
whenever the fan vibrates or does not work correctly. To ensure a correct functioning, never leave dust inside
the fan.
5. In case of applications in chemically abrasive environments impeller blades could worn out. In
unbalancing, it need to replace damaged parts.
6. In case of stored fans or not functioning for periods of two or more years, it is recommended a full inspection
of rotating bodies, along with a check of any rusts and residual greases. In general, a good mantaining of
metal surfaces is required.
Safety devices
The safety systems required to comply with the EC Machinery Directive relating to this appliance must be tested
at least once every 90 days.
In particular, to ensure an easy and safety maintenance, Vortice strongly suggest the use of ON/OFF safety
switches, manually resettable. The inspection on safety devices, must ensure a properly and reliable working.
To perform a valid test is necessary:
1. to match all technical documents (supplied with the machine and safety devices) with adopted mounting
details;
2. to take all the necessary precautions and, when the appliance is operating normally, cause the safety
systems to cut in one at a time. Make sure that the power supply to the appliance cuts out and that all moving
parts come to a stop (by opening the inspection panel); repeat this operation twice but not consecutively with all
the safety devices fitted to the appliance.
3. check that the static and passive safety systems are properly positioned and fastened in place; check
especially that shields protecting moving parts are properly fastened in place and can only be removed using
special tools.
Records must be kept of these 90-day checks and must show the outcome of the tests carried out.
Cleaning
Fig. 8
Periodically, need to ensure a correct maintenance
and cleaning of all installed elements.
This is required to avoid accumulations of dirt, dust,
grease, etc.: the main cause of fires and their
expansion.
Motorfan assembly
Periodically, check all the elements of the motorfan
assembly: motor support, motor, motor shaft, impeller,
etc.. Also need to check inlet cone and circular flange.
In case of noises or problems: contact the supplier.
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.
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case of
25