Subject to alteration.
ATDC
GB
6 WWW.LUVATA.COM
ATDC
Subject to alteration.
The ATDC should be checked regularly to prevent
downtime.
Check the following:
1. Abnormal sounds or vibrations may be caused by a
damaged motor bearing or a damaged impeller.
2. Fastening devices - Check that no load carrying bolted
joints are defective.
3. Electrical installation - Check that no damage has
arisen, and the safety switch functions correctly.
4. Fin structure - Check that it is clean and undamaged.
5. Impeller - Check that it is clean and undamaged.
6. Condensate drain – Check that the drain is not clogged.
Fan unit
The fan motors feature permanently lubricated bearings
and do not require regular maintenance.
Repair work
Parts and material proposed by Luvata Söderköping AB
must be used in order for the stated guarantee to apply.
The guarantee does not apply to heat exchangers that
have been damaged through incorrect installation,
hammering or freezing.
Long-term storage
When the ATDC is to be kept in long-term storage (normal-
ly longer than one month of storage in the Nordic climate)
the following applies for the unit heater:
1. The ATDC should be stored indoors as you intend to
install it.
2. When the ATDC is kept in a damp environment the
surface finish must be checked to ensure that damage
does not occur. Touch-up any damage.
3. The ATDC should be covered with reinforced plastic or
other mechanical protection to prevent contamination
and water from penetrating and soiling or damaging
the fin structure and fan unit.
4. The unit heater’s pipe connections should be sealed.
Risk of freezing
There is a risk of damage due to freezing on installations
with outdoor air mixing when the heat exchanger becomes
too cold. Check that the freeze monitor functions and that
the outdoor air damper closes fully. When the system is
not used during the winter, the water in the heat exchan-
ger should be drained to prevent freezing. When the heat
exchanger cannot be fully drained we recommend the use
of compressed air to blow out any remaining water. When
water with antifreeze is used the heat exchanger does not
need to be drained.
Spare parts
We recommend that one fan unit is kept as spare parts
when an installation is subject to very high demands on
availability. Fan units are normally kept in stock at Luvata
Söderköping. Fan units kept as spare parts should be
stored indoors in dry and dust-free conditions.
Replacing the fan unit
ATDC without mixer unit or air recirculation unit
1. Switch off the mains supply to the motor. Lock the
safety switch in the OFF position.
2. Disconnect the mains cable from the motor.
3. Loosen the securing screws on the contact guard and
remove the fan unit.
4. Follow the above instructions in the reverse order to
assemble.
5. Before starting, check that the impeller centres in the
fan ring and that the direction of rotation corresponds
with the rotation direction arrow.
ATDC with mixer unit
1. Switch off the mains supply to the motor. Lock the
safety switch in the OFF position.
2. Dismantle the filter cover and remove the air filter.
3. Follow the instructions for replacing the fan unit
without mixer unit, points 2 to 5.
4. Fit the air filter and filter cover.1
ATDC with air recirculation unit
1. Switch off the mains supply to the motor. Lock the
safety switch in the OFF position.
2. Dismantle the air recirculation duct, air filter and the
underside of the air recirculation unit.
3. Follow the instructions for replacing the fan unit wit
hout mixer component points 2 to 5.
4. Fit the underside of the return unit, air filter and air
recirculation duct.
Maintenance and service