Instructions For Maintenance; Ball Bearings - Elektror S-HP 265/18 Betriebsanleitung

Operating and assembly instructions S-HP
• A minimum rotary frequency of 35 Hz should be ensured
with fast rotating frequency converter devices (> 60 Hz)
depending on the frequency converter type.
• The converter should have a connection for a tempera-
EN ture sensor (PTC resistor sensor) or a temperature switch
(normally-closed contact)
*) Refer to the rating plate for data
The motor can be operated in a delta or star-point confi gura-
tion, depending on the input voltage of the converter.
The following U/f assignments must be confi gured at the
converter.
U
B
0
f and U
B B
If this is ignored, the motor current will increase dispropor-
tionately and the drive motor will fail to achieve its 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 corre-
sponding converter inputs to protective the drive
motor. Single-phase alternating current motors
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.
It is also important to note that special ambient
14
conditions may lead to a high level of contamina-
tion of the cooling fi ns with the FUK devices. The
frequency converter switches off if the cool-
ing output on the cooling fi ns is not adequate.
Regular cleaning is required for devices in these
environments.
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 to avoid high component loads and faults in
the converter operation:
Device motor output
1.1 kW < Motor output
<= 3.0 kW
3.1 kW < Motor output
<= 7.5 kW
7.6 kW < Motor output
<= 11.0 kW
11.1 kW < Motor output
<= 30.0 kW
Prohibited
range
f
B
= refer to rating plate
) specifi ed on the
B
Run-up time Expiry time
[s]
30
30
30
30
A uniform run-up and expiry must be guaranteed within the
run-up and expiry times.
No speed changes must occur during operation that exceed
the speed change during run-up and expiry.
Protection by residual-current-operated circuit breaker
(FI circuit-breaker):
The present IGBT frequency converters produce discharge
currents of >=3.5 mA due to their design principle. These dis-
charge currents can lead to unwanted tripping in systems
protected by a 30 mA-FI circuit-breaker.
If a fault occurs, fault currents can also discharge through the
PE conductor as direct current. If protection is needed on the
supply side by means of an FI circuit-breaker, then an ACDC
sensitive (type B) FI circuit-breaker must be used. Use of an
FI circuit-breaker other than type B can cause death or seri-
ous injury if a fault occurs.
To meet the EN 61800-5-1 standard, the PE conductor must
be duplexed and routed through separate terminals or have
a cross-section of at least 10 mm² Cu.
Operation and connection to public grids:
See 3.3

5 INSTRUCTIONS FOR MAINTENANCE

Wearing parts are subject to the recommended maintenance
intervals (refer to 5.1 to 5.4). The service life of wearing parts
(ball bearings and fi lters) depends on the operating hours,
the load and other infl uences, such as temperature, etc.
Maintenance and servicing may only be performed by per-
sons with the necessary expertise and regular training. In ad-
dition to the appliance's operating instructions and the regu-
lations and recommendations for the system as a whole, the
following points should be observed:
Inspection and maintenance intervals:
The operator must set the cleaning, inspection and mainte-
nance intervals himself according to operating hours, load
and operating conditions.
Immediate inspection and maintenance:
The blower must be inspected immediately if vibrations or
reduced air fl ow are observed.
Note!
Repairs must be carried out by the manufacturer.
We cannot accept any liability for repairs carried
out by third parties.

5.1 Ball bearings

The blower is equipped with closed grooved ball bearings
that do not have to be relubricated and have a minimum ser-
vice life of 22,000 hours in the case of horizontal drive shafts.
We recommend that the ball bearings are replaced before
exceeding the service life, minimum 22,000 hours. We gen-
erally recommend replacing the bearings after 30 months.
[s]
5.2 Seals and radial shaft sealing rings
60
Sealing elements and shaft sealing rings must, for safety rea-
sons, always be replaced after maintenance work involving
opening, removing or otherwise modifying sealing elements.
60
5.3 Micro-fi lters
60
The degree of clogging of the fi lter mats must be checked at
regular intervals in dependence on the conditions of use or
100
ambient conditions and any applicable environmental protec-
tion guidelines. This means that the user is responsible for
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