34
TXP Inst. & Maint. Manual: IM-825
Fig. 21: Attach the fan to the foundation
4. Connect the fan to the system (suc-
tion and/or pressure side).
5. Install protective grilles on existing
openings. This prevents the inter-
vention into the fan and the associ-
ated risks of injury.
The installation of the fan is
complete.
5.5 Electrical connection
DANGER!
Danger to life due to elec-
tric current
Touching voltage-carrying
parts results in an electric
shock. Damage to compo-
nents or insulation material
can be life-threatening.
Work on electrical in-
stallations/equipment
may only be carried out
by electrical profes-
sionals
If the insulation mate-
rial is damaged, switch
off the power supply
immediately and se-
cure the fan against re-
engagement. Have the
damage rectified im-
mediately.
Keep moisture away
from current-carrying
parts. This is how you
prevent short circuit.
WARNING!
Risk of fire and electric
shock due to loose or in-
correctly tightened connec-
tions
Incorrectly tightened or loose
connections can cause elec-
tric shocks, fires, property
damage and personal dam-
age.
Check the connections
for looseness and
tighten them according
to the tightening torques
of the following table.
Threaded
Bolt
Tightening Torque
M4
0.88 ft.-lb. (1,2 Nm)
M5
1.48 ft.-lb. (2,0 Nm)
M6
2.21 ft.-lb. (3,0 Nm)
M8
4.43 ft.-lb. (6,0 Nm)
Table 7: Tightening torques for threads in the
motor terminal box (IV / IV & Omron /IV &
Kostal)
Design of the electrical systems (dimen-
sioning considering the environmental
conditions, protection against overload
and short circuit, cabling, execution of
professional installation, commissioning)
is the responsibility of the customer.
The power supply to the frequency con-
verter must be protected with a lockable
fused or circuit breaker disconnect
switch. The field-supplied disconnect
must have adequate ampacity and must
be installed in accordance with Article
430 of the National Electric Code,
ANSI/NFPA 70. Please refer to the unit
