SystemAir DKEX 225-4, Инструкция по эксплуатации и техническому обслуживанию, Страница: 9 / 17

GB IE
Safety Information
Installation, electrical connection and commissioning are only to be
carried out by authorised personnel and in accordance with the
requirements and demands of the high-tension current regulations.
Installation carried out according to SS 421 0821 is considered to
comply with the demands of the high voltage directive’s
requirements. The fan should be installed and protected to secure
against spark generation caused by foreign objects coming in contact
with the impeller. Rust particles are not to be found in the air stream.
The transported air should not corrode the fan’s casing, impeller or
axis. (aluminium and steel). If the fan isn’t installed in a duct system;
a protection grid should be installed. No moving parts should be
accessible after installation (EN 294). Electrical connection should be
made according to the wiring diagram in the terminal box, markings
on terminal blocks or on cable. Protection earth (PE) should always
be connected. (If there’s risk for static electricity a separate earthing
should be attached to the casing of the fan). The fans are allowed for
use in explosive environments ( EE eq II T3 for I-phase and Eex e II
T3 for 3-phase) and for transport of gases, but may not be connected
to a flue-gas ducts. Fan-types KTEX, DKEX and DVEX
must be
installed with monitoring equipment of type U-EK230E, monitoring
equipment should be labelled “PTB03ATEX3045”. The monitoring
equipment is fitted with a manual reset and an indicator light that is lit
when the motor has been switched off, the equipment should be
placed outside of the danger zone. Fan- type EX 140/180
must be
fitted with a protective motor switch that should be adjusted so that it
protects the motors from overload and releases within 15 sec if
impellers are obstructed. In order to determine the release time for
the motor protection there should be a release curve that shows the
release time for the motor protection as a function of the
preoscillation current condition (start-up current status) (IA/IN) for 2,9
< IA/IN < 8 with ambient temperature of 20
°
C. The motor protection’s
release time is not allowed to deviate more than 20 % from release
curve. To limit the fan motor’s current to the values given in table 1
the static pressure must be adjusted by chocking the fan. The fans
must not be installed outdoors, (with exception DVEX). Safety
accessories (i.e. motor protection, safety grille) may not be
dismounted, short cut or disconnected. Before maintenance, service
or repair make sure that Power supply is interrupted (all-pole circuit
breaker) and that the impellers have come to a complete stop.
CAUTION The fans can have sharp edges and corners which may
cause injuries. 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. Note! Do not lift the
fans by the mains cable, connection box, and impeller or inlet cone.
Avoid blows and shock loads. Store the fans in a dry place protected
from weather and dirt until final installation. If the fan (KTEX, DKEX
and DVEX) has not been used for an extended period of time the
winding insulation must be checked. Resistance should be <= 1.5
M
Ω
Installation
Always refer to Safety information above before installation.
Installation presupposes that classification of the danger zones have
been made in accordance with SIND-FS 1983:2. Classification in
accordance with SS 421 08 20 is deemed to comply with these
demands. Particles of rust are not to be found in the air stream.
Monitoring equipment should be labelled “PTB03ATEX3045”.
EX 140/180 fans are not to be speed regulated. CAUTION Do not
use metal compression gland fittings with plastic terminal boxes. Use
a dummy plug seal for the compression gland fitting as well, to
ensure that the requirements for capsule class IP 54 according to
IEC 529 could be fulfilled. Ambient temperature and temperature for
transported air should be in the range -20
C till +40 C, fan type
EX140/180 are not to be mounted in direct sunlight. Mount the fan
according to the airflow (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 clamps and flanges are
available). Make sure 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 carried out
easily and safely. Disturbing noise can be avoided by installing
silencers (available accessory). The fans are meant for continuous
use within the temperature range stated.
Duct installations should be carried out so that capsule class IP 20
(mesh width less than 12mm) is fulfilled on inlet side and IP 10
(mesh width less than 50mm) on outlet side. The parts that are
responsible for the IP protection should be satisfactory designed
regarding strength and material. The cable end from the fan should
be installed so that it is mechanically protected and suited for use in
the surrounding environment. Cable for installation of fan Ex 180-
4(440V 3-phase 60Hz) should be able to withstand min.100
C.
Connecting cable for Ex 140/180 should have a diameter of. 6.5 - 12
mm and conducting area of 1.5-2.5 mm
. Mains supply for EX-fans
must be fixed. In case of external grounding of the chassis, see Fig.
8 page 2. Earth wire (b) should be pinned between 2 pieces of tin
plates (a). Installation bracket FKX (set of 2) is available as an
accessory. The brackets should be mounted on the motor, see
Fig.
7 .
Operation
Always refer to Safety information above before initial operation.
When putting into operation, check:
- That measured data isn’t allowed to exceed the value on the fan’s
nameplate. Rated current can be decreased when fan is set under
pressure. Connection data corresponds to the specifications on the
nameplate: Maximum v6%, -10%, according to IEC 38.
Rated current must not be exceeded at rated voltage. When speed
regulating fans; KTEX, DKEX and DVEX, by reducing the voltage,
the fans should be operated with a rated voltage from 15% up to
100% of their rated voltage. The minimum static pressure drop must
not be exceeded (Observe table 1). The fans may not be frequency
controlled.
- That the motor protection is working.
- That the rotating direction of the fan corresponds to the arrow
- That the motor is running smoothly (no abnormal noise).
- That no moving parts are touching the chassis or protection grilles.
- That no extensive on and off regulation is in use. The fans are
intended for continuous operation.
Maintenance, Service and Repair
Always refer to Safety information above before maintenance,
service or repair. The fan should be cleaned when necessary, at
least 1/year to avoid imbalance and unnecessary damage to the
bearings. Bearing should be tested against discordant sounds. The
lifespan of the bearings are dependent on running time and
temperature, but should last for at least 40 000 hours. Replace
bearings when the grease has dried out, contact the supplier. On
single phase fans there is a piece of sticky tape that covers the
ventilation openings. If broken the capacitor must be replaced by a
Systemair personnel. A filter will prolong the time interval between
each cleaning of the fan. 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. Make sure the fan has not been blocked
or that the motor protection has tripped.
Repair or exchange of
components is not allowed for ATEX approved products.