GUTMANN FG Instrucciones De Uso página 44

en
Aluminium, varnished and plastic
surfaces:
Use a soft, lint-free window or microfibre
cloth. Do not use dry cloths. Use a mild
window cleaning agent. Do not use aggres-
sive cleaning agents or agents containing
acid or lye. Do not use scouring agents.
Faults
Please contact our service department
immediately, if:
- the GUTMANN fan creates unusual noises
and if no faults can be determined after
checking the exhaust air hose;
- you notice strong vibrations and noises
being generated.
- the exhaust air duct and ventilation slits
are blocked by foreign bodies.
- you notice that the electrical power supply
line is damaged.
Please remember to indicate your GUT-
MANN fan model and the corresponding
serial number. This information can be
found on the type plate, which is located
on the outside of the GUTMANN fan.