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

www.elektror.com
Protection by residual-current-operated circuit breaker
(FI circuit-breaker):
IGBT frequency converters produce discharge currents of
>=3.5 mA due to their design principle. These discharge cur-
rents 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 3.4
4.3 Hydraulic Motor Operation
The run-up and expiry times as well as the speed changes
specifi ed in 4.2 should be noted when operating with hydrau-
lic motors. Free-running hydraulic motors should be used to
guarantee a smooth run on.

5 INSTRUCTIONS FOR MAINTENANCE

Wear parts are subject to the recommended maintenance in-
tervals and are an element of valid warranty claims (see 5.1
to 5.6). 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 modifi cations
or the replacement of components carried out by
third parties.

5.1 Ball bearings

Note!
The side channel blowers from Elektror are equip-
ped with sealed deep groove ball bearings, which
do not require relubrication.
Note!
Check the ball bearings during servicing and
prior to recommissioning.
Operation is only permitted with fl awless ball
bearings!
Note!
In the event of frequently starting up and shutting
down, premature replacement of the bearings will
be required. Determining the time for replacing
the bearings is the sole responsibility of the main-
Operating and assembly instructions SD
tenance and servicing personnel, who must make
a safety judgement.
Minimum ball bearing service
Devices
life
motor shaft
SD range
Ball bearing change recommendation
- Prior to reaching the minimum service life
- 30 months following delivery at the latest
- Check after 6 months' storage time; change if necessary
5.2 Seals and radial shaft sealing rings
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.
5.3 Micro-fi lters
The degree of clogging of the fi lter elements should be
checked at regular intervals, depending on the ambient
conditions / conditions of use. This means that the user is
responsible for ensuring that the fi lters are permeable. The
micro-fi lter must be positioned horizontally to prevent con-
tamination entering the side channel blower during mainte-
nance work. With vertical micro-fi lter installation, the com-
plete fi lter must be removed from the unit before starting
cleaning/maintenance.
5.4 Pressure limiting valve
The pressure limiting valve is a safety valve and its operation
must therefore be checked at regular intervals depending on
application conditions. The operating side must be closed
during inspection. The pressure limiting valve must respond
at the maximum pressure value.
Note!
Repairs must be carried out by the manufacturer.
We cannot accept any liability for modifi cations
or the replacement of components carried out by
third parties.
5.5 V-belt: Information on units without drive motor
intended for operation with a V-belt drive
We recommend that you check the V-belt tension approx.
every 5,000 operating hours. New V-belts must be checked
after a running-in time of 2 hours and re-tensioned if neces-
sary.
For data relevant to the V-belt drive of your unit, please refer
to the specifi cations in the table in Chap. 9 of these Operat-
ing and Assembly instructions.
5.6 Cleaning
There is a high risk of injury on the inside of the device due to
rotating parts during operation. Decommission the device in
all cases and wait until all moving parts have stopped before
opening, reaching in or inserting tools into the device. Secure
the device reliably against it being accidentally restarted dur-
ing the entire period.
Also make sure that no other dangerous situation can arise
when restarting after a standstill, e.g. as a result of a power
failure or blockages.
Horizontal Vertical motor
shaft
22.000 11.000
Hours Hours
EN
15