Air Handling units AeroMaster XP
37
Note: Th e panel with interconnecting box can only be released, not
removed from the heat exchanger frame. Th e rotary heat exchanger
must be disconnected from the power supply!
Figure 8
– Access to centre the rotor
Belt Replacement
If damaged or broken, the driving belt must be replaced with a new
one. A new driving belt can be obtained as a spare part which must be
thermally connected together. A special tool can be used to connect
the driving belt safely. For quick connection of the driving belt, you
can use a common lighter. To do so, follow the procedure below.
Before replacing the driving belt, ensure the heat exchanger is discon-
nected from the power supply.
If the driving belt has broken, the heat exchanger rotor will stop but
the motor and pulley will continue to run!
1.
Paste the new driving belt with adhesive tape to the rotor.
2.
Rotate the rotor to wrap the driving belt around.
3.
Measure the driving belt length, including the pulley.
4.
Shorten this driving belt length by 8% (e.g. for L 2.500 mm =
200 mm).
5.
Melt simultaneously both driving belt ends. (Use a contact
iron at t=400 °C or above a lighter fl ame; do not set the belt
on fi re!)
Figure 10
– belt connection
Figure 11
– belt replacement
XPXR Regeneration Exchanger Section
tightening
belt
Figure 9
– Supporting the rotor using a tightening belt
Run the tightening belt under the heat exchanger rotor and attach
it to both frame braces. Pulling the belt, shorten its length and
tighten it against the rotor (see fi gure).
Slowly loosen both shaft bolts using a ring spanner. Turn a
minimum of 1 to 2 turns, but no more! Never remove the bolt
entirely!
With an open palm, push the rotor into the required position. (Use
gloves!) Th e rotor can be raised by tightening the belt.
Firmly tighten both shaft bolts and check the position. Th en
release the tightening belt.
Step 3:
Check all sealing brushes around the rotor circumference as well as in
the dividing plane and around the fl ushing chamber circumference. If
any leaks are found, adjust the sealing brushes by shifting the plastic
bars to the new position. An SQ2 (square) tool is required to loosen
the brushes.
Step 4:
Reassemble and reconnect all removed parts.
6.
Press the driving belt ends together to connect them.
7.
Let the connection cool down.
8.
Check the proper position of the driving belt around the rotor.
9.
Pull the driving belt down, a 0.5 m log rod can be used, and put
it on the motor pulley. Put the rod through the driving belt loop
and lodge its end against the heat exchanger frame. Push the
rod down towards the heat exchanger base and apply tension
to the driving belt to pull it down and put it on the pulley from
below. Pull the rod slowly up and remove it.
