Elektor HRD 1/2T, Руководство по эксплуатации и технике безопасности

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18
EN
Operating and assembly instructions HRD www.elektror.com
9016309 01.20/13
which are operated in these environments must be inspected
on a regular basis.
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 3.6
4.3 Hydraulic Motor Operation
The run-up and expiry times as well as the speed changes
speci fi 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
Wearing parts are subject to the recommended maintenance
intervals (refer to 5.1 to 5.5). The service life of wearing parts
(ball bearings and fi lters) depends on the operating hours,
the load and other in fl 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
Note!
The fans from Elektror 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 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-
tenance and servicing personnel, who must make
a safety judgement.
Devices
Minimum ball bearing service
life
Horizontal
motor shaft
Vertical motor
shaft
HRD range
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 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 mats must be checked at
regular intervals in dependence on the conditions of use or
ambient conditions and any applicable environmental protec-
tion guidelines. This means that the user is responsible for
ensuring that the fi lters are permeable.
5.4 V-belt (in appliances supplied complete with V-belt
drive)
The minimum service life of the V-belt in use is 25,000 hours.
The V-belt tension must be checked after approximately
5,000 operating hours (refer to label for belt tension values
and setting values). New V-belts must be checked after a
running-in period of 2 hours and retensioned if necessary
(data see chapter 11 technical speci fi cations).
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Checking and retensioning the V-belt
The item numbers given in brackets refer to the replacement
part drawing. Setting values: see label on the support fl ange
plate (59) respectively on the blower base (11).
Replacing/retensioning the V-belt:
• Remove the grating (55) or belt guard (27).
• Undo the hexagon bolt (60) or tensioning bolt on the
motor tensioning rail (43).
• Undo the hexagon bolt (58) or tensioning bolt on the
motor tensioning rail (43).