Rittal 3144.000, Руководство по сборке и эксплуатации

Страница: 4 / 8

Mounting
5 Mounting
Mounting, electrical connection and commissioning
are only to be performed by trained service
personnel. Adhere to all machinery-related
requirements and specifications supplied by the
system manufacturer or machine builder. Wear
safety shoes and gloves for handling!
•
The following applies for all cross flow fans:
-
Do not install distorted.
- Housing or mounting bracket must be fixed
flat on a level surface.
- Do not apply force (levering, bending).
- Standard horizontal installation.
- Depending on installation circumstances
and application, the open motor (IP 10) will
require protection against water spray and
objects falling into it.
- If the motor installation is insulated (version
with structure- borne noise decoupling
using rubber elements), the fan housing
must also be earthed where components
under voltage are connected to it.
- The fan discharge must not be adversely
affected with respect to flow engineering by
installation of or attachments to the fan
(e.g. shifting of housing edges, protruding
seals).
- Connect fan only to electrical circuits that
can be disconnected with an all-pole
isolating switch.
- Electrical connection corresponding to
wiring diagram on housing.
-
Connect the temperature monitor to the
tripping device and/or motor cut-out switch.
6 Electrical connection
•
Must only be carried out by trained personnel
(DIN EN 50 110, IEC 364).
•
Connect fan only to electrical circuits that can
be disconnected with an all-pole isolating
switch.
•
The motors have partly metal terminal box or
partly screened connecting line (connection to
EC-controller).
•
Only use lines which can guarantee a
permanent seal around the cable glands
(pressure-resistant, dimensionally-stable,
round-centred jacket; e.g. by means of gusset
filling)!
•
Thermal contacts have to be connected.
•
Attention : Connection directly to the mains
supply results in a damage of the motor.
Electrical connections must not be short-
circuited since there is danger of de-
magnetization.
•
Do not touch the connection ends of the
motor when it has been switched off and is
coming to a stop – Electrical shock due to
the effect of the generator.
7 Operating conditions
•
Do not operate the fan in an explosive
atmosphere.
•
Switching frequency:
-
The fan is rated for S1 continuous
operation.
- Controls must not allow extreme switching
operation.
•
Ziehl-Abegg cross flow fans with integrated
external rotor motor are, without restriction,
suitable for operation with frequency inverters
when the following points are observed:
-
Between the inverter and the motor,
sinusoidal filters should be incorporated
which are
effective for all phases
(sinusoidal output voltage, phase against
phase, phase against protective conductor)
as offered by manufacturers. Please ask
for our technical information L-TI-0510.
- du/dt filters (also called motor or
suppression filters) cannot be used in
place of sinusoidal filters.
- When using sinusoidal filters, screened
motor leads, metal terminal boxes and a
second earth connection to the motor can,
if necessary, be omitted. Check-back by
the supplier of the sinusoidal filter.
•
If the operational leakage current exceeds 3.5
mA, earthing in compliance with DIN EN 50
178, art. 5.2.11.1 must be provided.
•
Noise problems can be eliminated by using a
sound attentuator.
•
A-rated sound power levels of over 80 dB(A)
are possible, see product catalogue.
•
Corrosion is possible at the cutting edges on
sendzimir galvanised parts.
8 Start-up
•
Before first-time start-up, check the following:
-
Have installation and electrical connection
been properly completed?
- Safety equipment is in place (
→ Contact
protection).
- All leftover installation materials and other
foreign materials have been removed from
the fan cavity.
- Is the protective earth connected?
- Temperature monitor/motor protection
switch are