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Disconnect the unit from the power supply prior to any connection,
servicing, maintenance, and repair operations.
Connection of the unit to power mains is allowed by a qualified
electrician with a work permit for the electric units up to 1000 V after
careful reading of the present user's manual.
Check the unit for any visible damage of the impeller, the casing, and the
grille before starting installation. The casing internals must be free of any
foreign objects that can damage the impeller blades.
While mounting the unit, avoid compression of the casing! Deformation
of the casing may result in motor jam and excessive noise.
Misuse of the unit and any unauthorised modifications are not allowed.
Do not expose the unit to adverse atmospheric agents (rain, sun, etc.).
Transported air must not contain any dust or other solid impurities,
sticky substances, or fibrous materials.
Do not use the unit in a hazardous or explosive environment containing
spirits, gasoline, insecticides, etc.
Do not close or block the intake or extract vents in order to ensure the
efficient air flow.
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