Start-up procedure:
• Make sure that there are no foreign bodies or dirt
near the fan blades.
• Check that the air inlet and outlets are clear.
• Make sure that the safety systems are reliable and
working properly by repeatedly testing them to
ensure they turn the appliance OFF and that the
power supply is disconnected. We recommend that
you test that the system is working properly at least
three times.
• Check that the pulley is properly aligned and
securely fixed on the shaft (QBK POWER).
• Make sure that the fan blades turn in the same
direction as shown by the arrow on the side of the
shield.
• Run the appliance for 120-180 minutes then check
the belt drive tension. If it needs adjusting, follow
the procedure described later (QBK POWER).
• Measure the power absorption and compare it with
the data on the ID plate. If it is higher, trace the
cause by checking that:
- the motor and fan blades can rotate
freely;
- the fan speed is as it should be;
- airflow is not higher than the appliance nominal
value;
- the power supply is correct.
• Make sure that any shielding protecting moving
parts is properly fitted in place.
• Check that the filter has not been damaged during
transport or handling and that it is intact and clean.
Maintenance
Apart from observing legal requirements relating to
accident prevention, maintenance staff must also
make sure they are wearing suitable PPE and using
ear protectors if noise emissions exceed the
permitted levels.
Safety systems
The safety systems required to comply with the EC
Machinery Directive relating to this appliance must be
tested at least once every 90 days.
The test must conform that the safety systems fitted
are working properly and are reliable.
To perform a valid test:
1. using the documents supplied with the appliance,
find out what safety devices and construction
adaptations apply
2. 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.
Motor, fan and trasmission
The motor and fan bearings are sealed units and need
no lubrication.
Only a few large fans are mounted on bearings that
are fitted with grease nipples. Such bearings need to
be lubricated once a year with lithium grease using
the following procedure:
1. to avoid introducing dirt into the system, carefully
clean the grease nipple before connecting the
grease gun;
2. use moderate pressure to feed grease into the
system but make absolutely certain that none
escapes from the seal;
3. rotate the fan blades for a few seconds.
Every 30 days, check the drive belts for wear and tear
and test the tension as follows:
1. Remove the protective cover;
2. Measure the length of the free section of belt “D”
(Fig. 15);
3. Apply a force of “F” to the middle of the belt. This
reading is given in the table in Fig. 15 as part of the
section regarding the drive belt fitted (see
“Technical Sheet”);
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