6.5.3.2. Driving Belt Replacement; 6.5.3.3. Drive With Multiple Race Pulleys; Heat Recuperators; Crossover Flow Static Recuperator - TCF ZAE Series Installation, Operation And Maintenance Manual

if the tension is not correct, the following will occur:
- if the belt is slack, it will wear rapidly and the drive
system will be inefficient
- if the belt is too taut, the motor and fan bearings will be
damaged.
Whenever the belts are tensioned, you must check that
the drive belts are aligned using an ordinary RULER. (fig.
38).
If the pulleys are of different thickness, you must check
their equivalence as shown in fig. 39 to ensure correct
installation.

6.5.3.2. Driving belt replacement

To replace THE DRIVING "V" BEL`T:
- Loosen the drive and remove the worn belt
- Check the condition and wear of the pulleys and replace
them if necessary
- introduce the new belt without forcing; any forcing
could impair the drive and shorten its service life
- align the drive and tension the belt
- check the belt tension after about 10 hours in service.

6.5.3.3. Drive with multiple race pulleys

- In the case of drives with several belts, the belts must be
replaced at the same time. This means that there must not
be belts presenting different states of wear in the same
drive system
- the number of belts must always match the number of
races
- in this type of drive system, the belt slack must be on the
same side, as shown in Hg. 40, before they are tensioned.
6.6. Heat recuperator
6.6.1 .

Crossover flow static recuperator

Maintenance on this type of recuperator is confined to
CLEANING since it does not have any moving parts. To
clean the recuperator:
- remove the dust from the exchanger using a compressed
air jet and a wire brush
- remove grease deposits from the finned block with
warm water or steam and liposoluble household
detergents if necessary
- check the condensate drain every month and remove
any deposits.
6.6.2.

Rotary recuperator

The heat exchange surface is self-cleaning. However, TCF
recommends:
- removing any residue with a compressed ai rjet or steam
- removing any deposits
- replacing the belt, if worn
- checking the physical condition and cleanness of the
drive every month.
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