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the impeller and the casing 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 the motor jam and noisy
operation. Misuse of the unit and any unauthorised modifications
are not allowed.
• Take steps to prevent ingress of smoke, carbon monoxide, and other
combustion products into the room through open chimney flues or
other fire-protection devices. Sufficient air supply must be provided
for proper combustion and exhaust of gases through the chimney
of fuel burning equipment to prevent back drafting. 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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