INSTRUCTION MANUAL
for „DELTAFAN” wall fans of the type: ***/R/*-*/**/***/Ex
Page 8/14
4.4 LOCATION
The device mounting location must be established in a design by a competent person. Technical requirements
and regulations in force must be met to obtain permissions (among others, related to a building, architectonic
and fire-proof provisions, environmental legislation). Prior to the device fitting and installation it is
recommended to obtain all necessary permissions.
The following conditions must be met to ensure the correct installation of a device:
the device should be used according to its purpose,
the device should be built in a construction capable of supporting the fan weight,
proper distances must be maintained to ensure correct air flow and free access during maintenance works,
simple activities and device operation monitoring are permitted,
the fan should be protected on the other side of a room being ventilated by means of a protection screen
preventing any objects from entering and damaging the fan during operation. The protection screen should
be adapted to explosion-proof working conditions,
in order to protect against accidental contact with device moveable parts it is forbidden to remove fan
protecting elements, that is, protection screen installed.
4.5 OPERATION
The fan can operate in voltage variations not exceeding 5% of the motor rated voltage. All rating is related to
rated voltage. If voltage variations exceed 5% of the rated voltage, the motor should not be started.
The fan motor has protection rating of IP 56, which prevents solids and water from entering its inside in the
scope specified in the standard IEC 60034-5.
The motor can be used for constant operation only, which means light and rare start-ups not causing serious
motor heating. The use of a protection clamp depends of electric shock protection applied according to
standards in force.
The following should be checked before connecting the motor:
The rated voltage of the motor must correspond to the voltage of a power supply network
(network voltage variations cannot exceed ±5 % of the rated voltage).
Connections for correct winding on the terminal box.
Mounting and continuity of the protection connection.
The motor should have correct overload protection, whose current-time characteristic guarantees
that the motor will be disconnected from the supply voltage in a time shorter than time tE
specified for it at a current equal to the motor starting current.
The motor isolation resistance cannot be less than 20MΩ in the cold state. In case when the motor
is moist (when the motor isolation resistance is less than 20MΩ) it should be dried in the
temperature below 353K (+ 80°C).
The motor rotation direction should be consistent with the rotation direction of a device being
driven; in typical motors the rotation direction is clockwise – looking from the motor driving side.
