
• Installation and maintenance according to the appli-
cable national rules. For members of CENELEC in
European countries, the national standards
based on EN 60079-14 and EN 60079-17 should
be taken into consideration.
• For the electrical data see Table 1 on page 10.
• Installation cable should be designed after the fan’s
maximum power. The cable fitting M25 x 1,5
(RFTX) allows a cable diameter of 11-16 mm,
and cable fitting M20 x 1,5 (RFEX) allows a cable
diameter of 7-13 mm. The torques of the installa-
tion cable is 10 Nm.
•Check possible transport damages of the fan. A
damage fan must not be installed in any circum-
stances.
•Check the distance between the impeller and inlet
cone and the distance between the impeller and the
casing. These distances must be a minimum of 3 mm.
• The fan is attached to the base by bolts through the
four holes on the fan bracket. The fan must be per-
manently installed in wall/floor so that the fan is
stable. When mounted on a wall a wall bracket
should be used so that the fan is vertical mounted.
Bolted joints should be aligned with base.
•If installation cause vibrations, the fans must be con-
nected to duct via a flange or damper. For connec-
tion to circular duct there is an outlet pipe as an
accessorie.
•Installation and starting must be made by an autho-
rised electrician according to directions and require-
ments. Electrical installation must be made accor-
ding to EN 60079-14 that complies with the safety
requirements of high tension current.
• Connection according to wiring diagram below.
• The fan must be grounded.
•An external motor protection must be installed (as
an accessorie). If the motor protection is
installed in the same zone as the fan, it must have
a corresponding ATEX classification.
• The current value of the motor protection must be
adjusted for current operating conditions. However,
the settings of maximum current value may not be
exceeded.
• The fan is mounted with an air gap with at least 14
mm between the motor air intake for cooling and
obstacles.
• Any nearby sources of heat or cooling devices should
be considered so that the allowable fan temperatu-
re range -20°C to +40°C is maintained.
•Before starting the fans must be connected to duct
or equipped with a safety grill to preclude contact
of moving parts (ISO 13857).
• The fans are only intended for fixed installation.
•The fan’s connecting cable must be permanently
connected, mechanically protected and protected
from other environmental impacts in order to avoid
risk of explosion. The free end of the cable must be
connected in accordance with current wiring rules
to protect against explosion
•The fans should be installed in a safe way, not risking
to fall off, to be expose for or cause vibrations.
•Precautions must be taken to prevent material to be
sucked or fall into the fan, when vertically mounted.
Minimum IP 20 <_ Ø12,5 mm at the inlet side and
IP 10 <_ Ø 50 mm at the outlet side.
• The components of these IP-protections should be
designed in an appropriate manner in terms of
strength and material.
•The fan must be installed according to the air direc-
tion label.
•The fan should be installed in a way that makes ser-
vice and maintenance easy and safe.
12
INSTALLATION
RFTX
4040116 3-phase, Y 400V
RFEX
4040191single phase, 230V
RFTX
4040196 3-phase, Δ 230V
WIRING DIAGRAM