Instructions For Maintenance; Ball Bearings - Herz HD140 Betriebsanleitung

Device motor output
Motor output <0,25kW
0,25kW < Motor output
<=3,0kW
3,1kW < Motor output
<=7,5kW
7,6kW < Motor output
<= 11,0kW
11,1kW < Motor output
<= 30HW
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):
IGBT frequency converters produce discharge currents of >=3.5
mA due to their design principle. These discharge 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 serious 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
specified in 4.2 should be noted when operating with hydraulic
motors. Free-running hydraulic motors should be used to
guarantee a smooth run on.

5.0. INSTRUCTIONS FOR MAINTENANCE

Wear parts are subject to the recommended maintenance
intervals and are an element of valid warranty claims (see 5.1 to
5.6). The service life of wearing parts (ball bearings and filters)
depends on the operating hours, the load and other influences,
such as temperature, etc.
Maintenance and servicing may only be performed by persons
with the necessary expertise and regular training. In addition to
the appliance's operating instructions and the regulations 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 maintenance
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 flow are observed.
Note!
Repairs must be carried out by the manufacturer.
We cannot accept any liability for modifications or
the replacement of components carried out by
third parties.
14
Run-up time Expiry time
[s] [s]
5 10
10 20
20 40
30 60
30 100
Technische Änderungen vorbehalten / Technical changes reserved

5.1 Ball bearings

Note!
The side channel
equipped 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 flawless 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
maintenance and servicing personnel, who must
make a safety judgement.
Minimum ball bearing service life
Horizontal motor shaft
22'000 Hours
Ball bearing change recommendation:
- Prior to reaching the minimum service life
- 30 months following delivery at the latest
- Check after 6 month's storage time; change if
necessary
5.2 Seals and radial shaft sealing rings
Sealing elements and shaft sealing rings must, for safety
reasons, always be replaced after maintenance work involving
opening, removing or otherwise modifying sealing elements.
5.3 Micro-filters
The degree of clogging of the filter 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 filters are permeable. The micro-filter must be
positioned horizontally to prevent contamination entering the
side channel blower during maintenance work. With vertical
micro-filter installation, the complete filter 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 modifications 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 necessary.
For data relevant to the V-belt drive of your unit, please refer to
the specifications in the table in Chap. 9 of these Operating and
Assembly instructions.
HERZ
blowers from
sole responsibility of
Vertical motor shaft
11'000 Hours
BA HD140 V30 R20 07_2021 DE-GB.doc
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