3
NCF
Contents
INTRODUCTION .....................................................................................................................................4
TECHNICAL DATA ..................................................................................................................................4
SAFETY INSTRUCTIONS.......................................................................................................................7
Installation ...............................................................................................................................................7
Risks involved in incorrect handling or use ..............................................................................................7
Other risks related to fans ........................................................................................................................8
Specific risks involved in transporting and installation .............................................................................8
Specific risks involved in fan maintenance...............................................................................................8
DECLARATION OF CONFORMITY ........................................................................................................8
Prohibition to put into service...................................................................................................................8
GENERAL INFORMATION ....................................................................................................................9
Fan orientation .........................................................................................................................................9
Standard fan outlet position for NFC fans ................................................................................................9
TRANSPORTS AND INSTALLATION ...................................................................................................9
Transport and lifting ................................................................................................................................9
Storage in a warehouse ..........................................................................................................................9
Lifting NCF fans ......................................................................................................................................9
Installation .............................................................................................................................................10
Minimum distances between components ...........................................................................................10
Connections to pipes .............................................................................................................................10
Electrical connections ...........................................................................................................................10
Delta connections ..................................................................................................................................11
Star connections ....................................................................................................................................11
CHECKS TO BE MADE BEFORE AND AFTER STARTING ...............................................................11
Preliminary checks.................................................................................................................................11
Checks to be carried out with the fan running .......................................................................................12
MALFUNCTIONS AND CAUSES .........................................................................................................12
MAINTENANCE ....................................................................................................................................13
Checking and cleaning parts in contact with the fluid ............................................................................13
DISASSEMBLY .....................................................................................................................................13
Intake nozzles .......................................................................................................................................13
Housing ................................................................................................................................................13
Fan rotor ...............................................................................................................................................13
SCRAPPING THE FAN ........................................................................................................................13
TECHNICAL ENCLOSURES ................................................................................................................14
Tightening torques for nuts and bolts ....................................................................................................14
Tightening torques M for bolts with ISO metric thread ..........................................................................14
