NCFEN
20
4.3 Installaon types
WARNING! Risk of personal injury.
• Even with guards installed (regardless of the condions of supply or installaon),
the fan may be dangerous due to the eects of indrawn or moved air.
• It is advisable to adopt precauons that prevent access to the room containing
the fan while it is operang, or to keep persons away with xed guards that
maintain a safe distance from the intake opening.
• Check the eciency of all guards every month. In case of wear, damage or
breakage, replace them immediately.
• The user is responsible for the selecon of equipment, ropes, belts and chains
best suited for both load and funconality.
• Unless otherwise specied by contract, the fan and guards are suitable for
installaon as a single unit, and must not be subjected to eects of uid dynamics
caused by other machines installed in the same uid movement system.
• On starng and in compliance with programmed maintenance intervals, check
that nuts and bolts are correctly ghtened.
• A safety procedure for access to the fan must be compiled, taking into
consideraon the indicaons provided by the manufacturer, informaon deriving
from the analysis of risks at the installaon point and safety requirements in
workplaces.
• The client and/or the installer of the electric system is responsible for choosing
the equipment and cables used for connecng the fan electrically, based on the
dimensions of the motor installed and the characteriscs of the main power
supply.
There are four possible installaon types, in compliance with UNI 10615 specicaons:
• Type A: open intake and outlet.
• Type B: open intake and outlet connected to a pipe.
• Type C: intake connected to a pipe and open outlet.
• Type D: intake and outlet connected to a pipe.
Clearly AB Ph. Nederman & Co cannot be aware of which of these four installaon types
will be used by the user. Therefore, the installer or end client themselves must analyze the
risks involved for the chosen installaon type used in the specic applicaon.
Depending on the applicaons that the client intends to use the fan for and on the type of
installaon chosen, the following safety shields must be ed:
• Type A installaon: xed shields at the intake and outlet.
• Type B installaon: shield ed only at the intake.
• Type C installaon: shield ed only at the outlet.
• Type D installaon: no shield at either the intake or outlet.
The shielding must be constructed to impede access to the parts of the fan that could
cause injury. It must be robustly built enough to stand the vibraons and stress caused
by the machine and by environmental condions. It must be securely xed in posion by
devices that will not become loosened by vibraons and that cannot be removed without
the use of tools.
It is, in any case, the person installing the fan who is responsible for ensuring that adequate
measures have been taken to prevent accidental contact with the fan’s moving parts.
The installer and the user must also take into account other types of risks present, in
parcular those caused by foreign maer entering the fan and the aspiraon of explosive,
inammable or toxic gases at high temperatures.