Safety Information; Transportation And Storage; Maintenance, Service And Repair - SystemAir RVK Instrucciones De Funcionamiento Y De Mantenimiento

GB

Safety Information

All fans are intended for transportation of air in air handling systems.
They are meant to be used after building them into machines or
duct systems or after contact protection grid has been installed.
(SS-EN 294). No moving parts shall be accessible after installation.
The fans are not to be used in hazardous environments or con-
nected to flue ducts. The fans must not be installed outdoors, (with
exception of roof fans). Safety accessories (i.e. motor protection,
safety grille) may not be dismounted, short cut or disconnected.
CAUTION Before servicing or maintenance, switch off power, (all-
pole circuit breaker), and make sure the impeller has come a stand-
still. CAUTION The fans can have sharp edges and corners which
may cause injuries. CAUTION Be careful when opening the fans
service-hatches (swing-out), the fan and motor assembled on the
hatch is relatively heavy.

Transportation and Storage

All fans are packaged at the factory to withstand normal transport
handling. When handling the goods use suitable lifting equipment in
order to avoid damage to fans and personnel. Do not lift the fans by
the connecting cable, connection box, impeller or inlet cone. Avoid
blows and shock loads. Store the fans in a dry place protected from
weather and dirt until final installation.
Installation
Refer to Safety information above. Installation, electrical connec-
tion and commissioning are only to be carried out by authorised
personnel and in accordance with requirements and demands.
Electrical connection according to the wiring diagram in the terminal
box, markings on terminal blocks or on cable. All 3 phase fans are
delivered from factory in 400V 3~ connection. CAUTION Do not use
metal compression gland fittings with plastic terminal boxes. Use a
dummy plug seal for the compression gland fitting as well. Fans with
thermal contacts with external leads (TK) must always be connected
to external motor protection. Assemble the fan in the direction of air-
flow (see arrow on unit). The fan must be installed so that vibrations
are not transmitted to duct systems or frame of building. (Suitable
accessories like fast clamps and diffusers are available). Make sure
the assembly of the fan is firmly fixed and stable. The fan can be
mounted in any direction unless stated otherwise. The fans must be
assembled so that service and maintenance can be performed eas-
ily and safely. Disturbing noise can be avoided by installing silencer
(available accessory).
For frequency regulation an all pole sinus filter must be mounted
between motor and frequency controller (version all poles: phase to
phase, phase to earth). Fans are meant for continuous use within
the temperature range stated.
Operation
Before initial operation, check the following:
- Electrical connection has been properly completed.
- Protective conductor has been connected.
- Motor protection installed.
- Safety devices in place (protection grid)
- Leftover installation materials and foreign materials have been
removed from the casing.
When putting into operation, check the
following:
- Connection data corresponds to the specifications on the name-
plate: Maximum voltage +6%, -10%, according to IEC 38. Rated
current must not be exceeded with more than 5% at rated voltage.
CAUTION When speed regulating by reducing the voltage the
motor current may exceed the rated current at a lower voltage. In
this case the motor windings are protected by the thermal contact.
The minimum static fall of pressure must observed.
- That the motor protection is functional. The direction of rotation
should correspond to direction-of-rotation arrow (3 phase).
- Smoothness of motor operation, (no abnormal noises)

Maintenance, Service and Repair

Before maintenance, service or repair make sure that:
- Power supply is interrupted (all-pole circuit breaker).
- Fan impeller has come to a complete standstill
- Observe personnel safety regulations!
The fan should be cleaned when necessary, at least 1/year to avoid
imbalance and unnecessary damage to the bearings. A filter will
prolong the time interval between each cleaning of the fan. (It is
sometimes recommended to install a filter guard). The fan bearings
are maintenance free and should only be replaced if damaged. Do
not use a high-pressure cleaner (steam jet) when cleaning the fan.
Make sure the fan impeller's balance weights are not moved or the
fan impeller distorted. Listen for abnormal operating noise.
Resetting of the thermal trips
Automatic thermal trips resets it selves after the motor has cooled.
(TW)
Manual thermal trips (TB) are reset by using a pointed object and
pushing a button on the motor (the fan's outlet side) or through a
hole in the cover.
Manual thermal trips (SP1) are reset by disconnecting the mains for
approx. 10-60min.
Fans with external leads for thermal trips (TK) are reset from the
external motor protection. Make sure the fan has not been blocked
or that the motor protection has tripped. Contact the supplier if the
motor does not start after controlling and/or resetting the motor
protection.
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