Instructions For Maintenance; Ball Bearings - Elektror S-XP series Betriebs- Und Montageanleitung

Operating and assembly instructions S-XP
It is important the converter meets the following requirements
to ensure trouble-free operation of the blowers:
• Converter speed equal to or greater than the motor output *)
• Converter current equal to or greater than the motor output *)
EN
• Converter output voltage equal to the motor rated voltage
• Supply voltage max. 480V, including 5% voltage tolerance
• The converter pulse frequency should be 8 kHz, as a lower
pulse frequency produces loud motor noises.
• The values for the maximum/minimum frequency can be
found at 1.5.
• The converter must have a connection for temperature
sensors (PTC resistor sensors) or a temperature gauge
(break contact)
*) Values, see rating plate
The motor can be operated in a delta or star connection de-
pending on the converter input voltage.
The following c/f assignment must be set on the converter:
U
B
0
f and U
B B
Failure to observe this information leads to a disproportion-
ate increase in the motor current and the drive motor does
not reach the rated speed.
Warning!
To avoid personal damage, destruction of the
blower or motor overload, a higher frequency
(speed) than the frequency (f
rating plate must never be set on the converter
otherwise the motor may be overloaded or the
blower destroyed due to the increased speed.
The temperature sensors are connected to the
corresponding converter inputs to protective the
drive motor. Single-phase alternating current mo-
14
tors are not suitable for converter operation.
It is absolutely essential that you observe the
installation and safety instructions described in
the respective operating or application manuals
provided by the frequency converter supplier to
guarantee a safe and trouble-free operation.
Note!
The following times apply for the respective
device motor output class (see rating plate) with
run-up/expiry as well as speed changes in order
to avoid high component loads and faults in the
converter operation:
Device
S-XP 240/40
S-XP 245/20
A uniform run-up and expiry must be guaranteed within the
run-up and expiry times.
No speed changes may occur during operation that exceed
the speed change during run-up and expiry.
Prohibited
range
f
B
= see rating plate
) specifi ed on the
B
Run-up time Expiry time
[s]
30
30
Protection by residual current circuit breakers (FI-circuit
breakers):
The current IGBT frequency converters inherently produce
leakage currents > =3.5 mA. These leakage currents can
lead to false alarms in systems that are fused using a 30 mA
FI-circuit breaker.
In the event of a fault, residual current can also leak as direct
current via the protective conductor. If protection is required
on the supply side by means of a FI-circuit breaker, it is im-
portant that an FI-circuit breaker is used that is sensitive to
universal current (type B). The use of an incorrect FI-circuit
breaker other than type B can lead to death or serious injury
in the event of a fault.
The protective conductor must be designed to connect twice
via isolated terminals or via a protective conductor cross-
section with a minimum of 10 mm² Cu to comply with the
EN61800-5-1 standard.
Operation and connection to public supply networks:
See 3.5
5 INSTRUCTION FOR MAINTENANCE
Wearing parts are subject to the recommended maintenance
intervals (see 5.1 to 5.3 ). The service life of wearing parts
(ball bearings and fi lters) is dependent on the operating
hours, loading and other infl uences, such as temperature,
etc.
In addition to the operating instructions of the respective de-
vice and the applicable regulations and recommendations,
observe the following:
Inspection and maintenance intervals:
The owner should determine the cleaning, inspection and
maintenance interval depending on the operating hours,
loading and operating conditions.
Immediate inspection and maintenance:
In the event of vibrations, oscillations and a reduced air out-
put.
Note!
Repairs must be carried out by the manufacturer.
In the case of repairs; we assume no liability for
changes or the replacement of components by
third parties.
Problems
General
noises/prob-
lems
Device
[s]
S-XP 240/40
100
S-XP 245/20
100

5.1 Ball Bearings

Note!
The fans from Elektror are equipped with sealed
deep groove ball bearings, which do not require
relubrication.
www.elektror.com
Causes/remedies
Annual conduct visual inspection of the
impeller and housing, check the bear-
ings, check blower oscillations
Clean the device. If the imbalance
remains, the device must
be replaced!
Replacement of the impeller
max. 150000 load cycles
max. 150000 load cycles