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Blandovent
Drift och skötselinstruktioner
204268
3
Systemair
AB
GB
The fans must be installed firmly and securely. The
fans must be installed so that servicing and
maintenance can be performed easily and safely.
For frequency regulation, an all-pole sine filter must be
installed between the motor and frequency control (all-
pole version: phase to phase, phase to ground). Fans
are intended for continual operation within the given
temperature ranges
Operation:
Check the following before commissioning:
-Electrical connection is complete.
-Protective earth is connected.
-Motor protection is installed.
-Safety equipment is installed (touch guard).
-no foreign objects in the fan.
Check the following during commissioning:
That measured data does not exceed the rating data
found on the fan’s type plate: Maximum permitted
v6%, -10%, according to IEC 38. Rated current
is not exceeded by more than 5% at Rated voltage.
NOTE During speed regulation by lowering the voltage,
the current in the motor at a lower voltage can exceed
the given rated current. In such cases, the motor
winding is protected by the thermal switch!
-Motor protection’s function.
-That the direction of rotation of the fan wheel
corresponds with the direction of rotation arrow.
-That no strange noises are heard from the fan.
Maintenance, service and repairs:
Prior to a service, any maintenance or repairs:
-The fan must be disconnected from the power (Main
switch off).
-The fan wheel must have stopped.
-Applicable safety precautions must be observed.
The fan must be cleaned as necessary, however, at
least once annually to prevent imbalance resulting in
unnecessary bearing damage. The fan bearings are
maintenance free and should only be replaced if
necessary. Do not high-pressure wash the fan. Clean
the fan carefully to prevent upsetting the fan wheel’s
balance weights or deforming the fan wheel. Check that
no strange noises are heard from the fan.
If the thermal contactor has tripped, the following
applies:
- Fans with pulled out conductors for thermal conductor
(TK) are reset on the external motor protection. This
must not be returned automatically. Check that the fan
wheel is not blocked or that the motor protection has
not deployed. If, after checking and/or resetting the
motor protection, the fan does not start, contact the
supplier.