Herz MD10, Руководство по эксплуатации

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BA MD10MD14 V30 R20 07_2021 DE-GB.docx Technische Änderungen vorbehalten / Technical changes reserved 15
If this is ignored, the motor current will increase disproportionately
and the drive motor will fail to achieve its rated speed.
Device motor output
Run-up time
[s]
Expire time
[s]
Motor output < 0,25kW 5 10
0,25kW < Motor output
<= 3,0kW
10 20
3,1kW < Motor output
<= 7,5kW
20 40
7,6kW < Motor output
<= 11,0kW
30 60
11,0kW < Motor output
<= 30,0kW
30 100
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 3.5
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
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 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.
5.1 Ball bearings
Devices Minimum ball bearing service life
Horizontal
motor shaft
Vertical
motor shaft
MD10 / MD14 22‘000 Hours 11‘000 Hours
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 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.
Warning!
To avoid personal damage, destruction of the
blower or motor overload, a higher frequency
(speed) than the frequency (fB) specified on the
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
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
conditions may lead to a high level of
contamination of the cooling fins with the FUK
devices. The frequency converter switches off if
the cooling output on the cooling fins 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 avoid high component loads and faults in the
converter operation:
Note!
Repairs must be carried out by the manufacturer.
We cannot accept any liability for repairs carried
out by third parties.
Note!
The fans from
HERZ
are 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 sole responsibility of the
maintenance and servicing personnel, who must
make a safety judgement.