Stulz Tel-Air-2 Series, Operating Instructions Manual

Page: 54 / 72

E/0618/35A/54

Loosen the screws securing the filter holder.

Pull the filter holder towards you.

Rotate free-cooling damper in cooling position (complete recirculation), pushing the
unblocking button on free-cooling damper motor.

Remove the filter.
Cleaning the exchangers
Proceed as follows:
blow compressed air through the exchanger in the opposite direction to that of the air flow during
normal operation.
General cleaning
The metal casing of the unit can be cleaned using a detergent liquid as long as this liquid is
compatible with: PVC, polyethylene, silicone and polyester coating. Be careful not to wet the
electrical connections inside the unit.
Use of an unsuitable detergent might cause damage to the unit.
Do not use either acid or caustic substances or solvents like trichloroethylene to
clean any part of the unit.
Remove dust with a vacuum cleaner.
Clean the internal parts with a liquid detergent and compressed air not greater than 4 bar, with
the unit suitably earthed.
Unblocking button of free
cooling damper motor