Roof fans - Troges

RF Fans
Installation, Maintenance and Service
table #6, page 62. Three-phase motors are always connected
for 3x400V - Y voltage in the factory; if the fan is
controlled using a 3x230V - Δ frequency inverter (motor
outputs up to 1.5 kW) it is necessary to reconnect the
terminal box on the motor for delta connection! RF
71/50-4D and RF 10/71-6D line fans are always connected
for 3x400V –Y connection.
The wiring cables are led into the terminal box through
the tube which is routed through the fan and roof
adaptor interior into the ventilated room. The power
supply cable and thermal protection cable must be led
separately.
The cable must be firmly fixed, and it must not load
the connection in the terminal box with its weight.
When dimensioning the conductors, it is necessary
to take into account the current loading by the device as
well as the length of the conductor. The following cables
are recommended to connect fan motors:
HO5VVH2 - F 2Ax0.75 – circuit
CYKY 3Cx …
CYKY 4Bx …
Figure 3 – RF fan wiring diagram
single-phase motor
of the fan
TK - Terminals of the motor thermocontacts
U1, U2 - single-phase motor
terminals (1f - 230V/50Hz)
PE - Protective conductor terminal
– single-phase motor supply
– three-phase motor supply,
without control (ON/OFF)
CYKFY 4Bx …
/ CMFM 4Bx … – shielded, three-phase motor
power supply, frequency
converter control
If the fan is controlled using electronic components
(e.g. PE controllers or a frequency inverter), it
is necessary to eliminate electromagnetic interference
(EMC). To connect the fan to the frequency inverter, use
the specified shielded cable.
The fan wiring diagrams with front-end elements
(protective relays, controllers, control units) are
included in the Installation Instructions, respectively
in the AeroCAD project of the front-end elements.
single-phase motor
of the fan
three-phase motor
of the fan
TK - Terminals of the motor thermocontacts
U1, V1, W1 - Three-phase motor power
supply terminals (3f-400 V/50 Hz)
PE - Protective conductor terminal
Operation, Maintenance and Service
The fan operator must be acquainted with the Fan
Operating Instructions.
The fan is controlled depending on the type of
installed motor and the type of fan control. Fans equipped
with multiple-stage speed control are switched on/
off and controlled using the control panel of the ORe5,
PE2,5 or PE5 controllers (depending on the fan type),
or from the control panel of the TRR and/or STE(D)
controller, respectively the OSX control panel. The single-stage
fan is controlled in the ON/OFF mode using the
protecting relay.
If the roof fan is operated in association with a parent
control unit, the fan is controlled from the control panel
of the control unit.
Maintenance may only be performed by a qualified
person acquainted with these Operating Instructions,
and he/she must observe all applicable safety measures
and valid regulations.
The fan does not require special maintenance. A
regular check must be performed at least once a year,
as part of the summer service inspection. If the device
is operated in tough conditions, perform regular
inspections twice a year, usually before and after the
winter season.
During operation, it is necessary to check proper
functioning of the fan, its smooth running, and to keep it
and its surroundings clean.
The device can only be operated by qualified staff.
Basic service access is ensured through the upper
cover. To make it easy to access the terminal box or the
impeller when performing maintenance (including cleaning
the dampers area of dirt – leaves, twigs, etc.), or to
perform repairs, it is possible to remove the side outlet
pockets.
The service switch (delivered as an optional accessory)
situated on the device serves to disconnect the
fan from the power supply, preventing unintentional
start-up of the fan when performing maintenance. This
switch does not substitute the main or emergency switches.
Warning: When performing any maintenance or
repairs, the device must always be disconnected
from the power supply!
Figure 4 – Y/Δ connection in the three-phase motor terminal box
3x 230V/50Hz + PE *)
FM
(frequency inverter)
3x 400V/50Hz + PE
RF 56/31-4D
RF 56/35-4D
RF 56/40-4D
RF 71/45-4D
RF 71/50-4D
RF 71/50-6D
RF 100/56-6D
RF 100/63-6D
RF 100/56-4D
RF 100/71-6D
*) Applies for MicroDrive frequency converter, see Table #2 (the frequency converter delivered as a standard accessory)
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