
4
EN
All user’s manual requirements as well as the provisions of all the
applicable local and national construction, electrical, and technical
norms and standards must be observed when installing and operating
the unit.
Disconnect the unit from the power supply prior to any connection,
servicing, maintenance, and repair operations.
Only qualied electricians with a work permit for electrical
units up to 1000 V are allowed for installation. The present user’s
manual should be carefully read before beginning works.
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.
FOLLOW THE USER’S MANUAL REQUIREMENTS TO ENSURE DURABLE AND
TROUBLE-FREE OPERATION OF THE UNIT