2
WARNING
!
Follow the user's manual requirements to ensure durable
and trouble-free operation of the fan.
Disconnect the fan from power supply prior to any connection,
servicing and repair operations.
Only duly qualified electricians with valid electrical permit for electric
operations at the units with operating voltage up to 1000 V are
allowed for mounting and maintenance after careful study of the
present user's manual.
The single-phase power mains must comply with the acting local
electrical norms and standards.
The fixed electrical wiring must be equipped with an automatic circuit
breaker.
The fan must be connected to power mains through an automatic
circuit breaker QF integrated into the fixed wiring system with the gap
between the breaker contacts on all poles not less than 3 mm.
Check the fan for any visible damages of the impeller and the casing
before starting installation. The casing internals must be free of any
foreign objects which can damage the impeller blades.
Due to constant improvements the design of some models may slightly
differ from those ones described in this manual.
