Electrical Connection; Setting Into Operation; Inspection/Maintenance - Zehnder VDA Série Mode D'emploi

Electrical connection

Connect the fan in accordance with the
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enclosed diagram, EN 60204 and the
locally applicable regulations;
The power supply cable can be fed
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from inside through a gland in the base
or over the roof;
The electrical connection is made on
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the external mains switch or terminal
box (VDA 200 to 560), or under the mo-
tor protection cover (VDA 160 and 180).

Setting into operation

Check the free rotation of the vane;
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Check whether the electrical connec-
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tions have been made in accordance
with the supplied diagram;
The fan must be protected against over-
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loading;
If motor protection is fitted, set to 5%
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above the current indicated on the VDA
type plate;
Start the fan;
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Check the direction of rotation of the
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vane (see arrow on fan). Incorrect rota-
tion may result in the motor burning out;
Measure the current consumption of
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each phase. The measured current (on
a nonvariable speed fan) must not be
higher than stated on the type plate.
The protection must be set to the high-
est current measured. On a variable
speed fan, the current must be meas-
ured over the entire speed range. Set
the protection to the highest current
measured.
N.B. Not all VDA roof fans are speed
variable. Please check in the documen-
tation;
The permissible temperature of the air
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to be exhausted is -30°C to +40°C for
the types VDA 160 and 180, and -30°C
to +120°C for the types VDA 200 to 560;
The fan is designed for continuous
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operation and must be not be switched
on and off at intervals of less than 5
minutes;
Do not use the mains switch as On/Off
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switch. This may damage the fan (at
capacities > 2.0 kW).

Inspection/Maintenance

Before carrying out any inspection/
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maintenance activities, isolate the fan
from the mains; first turn off the op-
erating switch, followed by the mains
switch;
To enable inspection, remove the upper
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casing(7) with protective grille(1);
Loosen the nuts(5) and remove the
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outer assembly plates(6);
Remove the upper casing(7) and the
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protective grille(1);
The motor is fitted with ball-bearings
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with a grease filling, which under
normal circumstances is sufficient for
30,000 hours of operation;
Check that the vane, motor and base
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are not damaged or dirty;
Clean the components if necessary.
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Avoid damaging of the protective coat-
ing;
The fan may not be sprayed with water;
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Following assembly, switch on the fan;
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first the mains switch, followed by the
operating switch.
EN - 11