Machine Cleaning; Lubricating The Machine - TERMOTECNICA PERICOLI EOS42-53 Traduction De La Notice Originale

7.2 MACHINE CLEANING

WARNING
Never perform cleaning operations with the fan running.
Also for external cleaning of the machine, the safety nets and
the shutter blades, prior disconnection from the mains supply
required.
Observe the following provisions, to be performed regularly to
ensure proper cleaning and proper operation of the product.
• Clean the motor housing regularly with a brush or compressed
air (do not spray water or steam).
Cleaning the motor regularly is especially important when the
fan operates in particularly dirty or dusty environments, since
the motor must be able to dissipate heat generated.
• The bottom of the bearing structure contains holes to drain
any accumulated water; keep the bottom clean and the holes
unobstructed to avoid corrosion.
• Keep the guard fins and safety screens clean to prevent the
accumulation of dirt which reduces the air flow section and thus
decreases fan performance.
• Keep the linkages of the guard fins under the shoulder guard clean..
• Keep the shutters opening/closing mechanism clean
• The propeller blades do not require any special maintenance
because they are self-cleaning.
• When using a high-pressure cleaner, never direct the stream of
water or steam directly towards the motor or central pulley or
over the opening mechanisms.

7.3 LUBRICATING THE MACHINE

The ball bearing inserted in the driven pulley is permanently
lubricated and does not require special care; the same also applies
to the motor bearings.
The plastic parts (linkages) that move the fins of the shutter
must never be lubricated or greased so as to prevent harmful
accumulation of dust and deposits.
7.4 ADJUSTING THE TENSION AND REPLACING
THE DRIVE BELT
WARNING
All personnel must be notified when operations are performed
on the machine. Place a warning sign on the power switch when
performing maintenance in order to prevent another operator
from switching on the fan accidentally.
WARNING
Maintenance should only be performed by trained personnel in
compliance with safety regulations and the instructions given in this
Manual. Before attempting to connect to the power mains, isolate the
power line by opening the main switch.
The fan, in pre-assembled versions, is supplied with a properly
tensioned belt. In KD versions, during installation, follow these
steps to properly tension the belt. To ensure longer life of the
fan, it is advisable to check the belt tension after installation and
every time scheduled maintenance is performed. The belt must be
replaced when frayed, showing signs of wear, or if torn by following
the instructions below.
EN
Accessing the drive belt
- Take out the protection nets.
- If present, remove the belt guard.
- Remove the upper inspection fins acting on the fixing screws on
the sides of the fins (only for exhaust fans with cone only).
Replacing the drive belt
- To remove the worn belt, push the straps of the belt in the centre
area of the pulleys towards the inside of the fan (air outlet side) and
simultaneously turn the propeller.
Once freed from the pulleys, remove the belt from a propeller blade
and the nozzle, repeating this step for the other blades.
- Insert the new belt transmission belt between a propeller blade and
the nozzle, consequently working to the other blades.
- Fit the belt onto the motor pulley and on the driven pulley to the
extent possible; turn the propeller with force to feed the entire belt
into the groove of the driven pulley.
Checking and adjusting the belt tension for models without
automatic belt tensioner (ABT)
- Press the ends of the belt in
the intermediate area, about
30 cm from the motor pulley;
a distance of approximately
12/13 cm between the straps
of the belt means that the belt
tension is correct. A different
distance means that the
tension does not comply with
design values.
In this case, the motor
plate sliding system makes
it possible to restore the
correct tension.
- Loosen the M8 bolts that
secure the motor plate.
- Slide the motor plate until it reaches the position with the
optimum belt tension.
- Tighten the two M8 nuts to the torque specified in the section
"Bolt tightness check"
- Recheck the tension and, if necessary repeat the check and
adjustment operations.
Checking and adjusting belt tension for models with automatic
belt tensioner (ABT)
- Use the specific instrument to check that the vibration frequency of
the long side of the belt (the one not engaged by the ABT) is between
28 and 35Hz.
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