1034564
We reserve the right to alter specifi cations
Air heater unit LVD
GB
5
Replacing the motor and fan impeller
1. Switch off the mains supply to the air heater unit and
lock the safety switch in the OFF position.
2. Loosen the four screws (A) and remove the front,
see Figure 5.
3. Loosen the locking screw on the fan and dismantle the
fan from the motor.
4. Disconnect the electrical cable from the junction box.
5. Loosen the four screws holding the motor on the motor
mounting and lift off the motor.
6. Install the new fan unit by following the above
instructions in reverse order.
7. Check that the fan impeller is centred in the fan ring
and that the fan rotates in the direction indicated by
the arrow.
8. Start the air heater unit.
A
Figure 5. Removing the front
Risk of freezing
In installations with an ambient temperature of less than
0°C, there is a risk of damage due to freezing if the heat
exchanger becomes too cold. The air heater unit should
be drained of water if the system is not used during the
winter. Use compressed air to blow out any remaining
water when the heat exchanger cannot be fully drained.
The air heater unit does not need to be drained if it is
fi lled with water containing anti-freeze.
Long-term storage
When the unit is stored for longer than one month, the
following applies:
• Store the air heater unit indoors in the position in
which it is to be installed.
• Cover the air heater unit with reinforced plastic or
some other mechanical protection to prevent conta-
mination and water from penetrating and soiling or
damaging the fi n structure and fan unit.
• The air heater unit’s pipe connections should be
sealed.
• If the air heater unit is stored in a damp environment,
the surface fi nish must be checked regularly to ensure
that damage does not occur. Touch up any damage to
paintwork.
Maintenance and service
