Heat Exchanger; Drainpipe For Condensate; Operation Anomalies - S&P CADB-N-D Instructions De Montage Et D'utilisation

10.2 HEAT EXCHANGER

The access to the heat exchanger is performed by the bottom (horizontal CADB-N models 05 to 30), for the top part (horizontal models of
CADT-N 45 to 80) and for lateral part (vertical models). Using a screwdriver, remove the access panels to the heat exchanger.
To release the heat exchanger, loosen the screw that fix the heat exchanger to the internal structure.
FALLING OBJECTS
By loosening the screws that hold the panels, they will be released. In units installed in ceiling, pay special
attention to this operation to prevent the fall of panel. During the maintenance signaling the area below the heat
recovery unit and prevent personnel access to it.

10.3. DRAINPIPE FOR CONDENSATE

Regularly inspect the drainpipe for condensates to make sure it is not blocked, if this is the case, remove the obstruction.

11. OPERATION ANOMALIES

ANOMALY
Difficult to start.
Insufficient airflow.
Insufficient pressure.
Reduction in performance
after a period of acceptable
operation.
New air temperature too
cold.
Insufficient performance of
the exchanger
Formation of frost on the
exchanger.
Air pulsation.
There is water inside the
unit.
Not manipulate the heat exchanger for the finned area.
CAUSE
Reduced power supply voltage.
Insufficient static torque of motor.
Blocked pipes and/or inlet points closed.
Fan obstructed.
Filter overloaded.
Insufficient rotation speed.
Exchanger package blocked.
Leaks in the circuit before and/or after
the fan.
Damaged roller.
Outside air -5º C or less.
Models (CADB-DI): Thermal protectors
Support resistances open.
Fins dirty.
Outside air below -5º C.
Fan working in flow conditions almost 0.
Flow instability, obstruction or
bad connection.
Drain clogged or wrongly dimentioned.
Only DC versions. Internal breakage
of water coil.
Only DC version. The water coil is
being used for cooling purpose with
cold water.
Check motor specification plate.
Close the air inlets to reach the maximum speed.
Change the motor is necessary.
Contact the S&P Post-Sales service.
Clean inlet tubes.
Clean fan.
Clean or replace filter.
Check power supply voltage.
Clean the exchanger.
Check the circuit and restore original conditions.
Check the impeller and if necessary, replace with an original spare part.
Contact the S&P post sales service.
Insertion of post-heating resistances.
Contact the S&P post sales service.
Reset by pushing the button RESET, all the thermal protectors of the
resistance.
Clean the exchanger.
Insertion of post-heating devices (anti-ice).
Contact the S&P Customer Advice service.
Modification of the circuit and/or replacement of the fan.
Clean and/or readjust the inlet channels.
Operate the electronic regulator, increasing the minimum speed
(insufficient voltage).
Contact the S&P Customer Advice service.
Check if exists a body/object obstructing the passage of water and
remove it. Verify that the drain trap exists and is correctly sized
according to the instructins of this manual.
Isolate the battery using the isolation valves.
Repair the leak/ Replace the battery.
The CADB-N DC heat recovery can be used just for post-heating
function with hot water.
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SOLUTION