14
U
B
0
f
B
Prohibited
range
EN
Operating and assembly instructions HRD BOOSTED
www.elektror.com
016341 03.14/07
The following U/f assignments must be confi gured at
the converter.
f
B
and U
B
= refer to rating plate
Run-up/expiry times
The following times apply to the corresponding blower types
(see rating plate):
Blower type
Start-up time
[s]
Expiry time
[s]
HRD 7 FU 120
30
100
HRD 60 FU 135
30
60
HRD 2 FU 130
30
60
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.
Failure to observe this information leads to a disproportion-
ate increase in the motor current and the drive motor does
not reach the rated speed.
Warning!
A higher frequency (speed) than the frequency
(f
B
) that is specifi ed on the rating plate must
never be set on the converter in order to avoid
personal injury and/or damage to the blower and
motor overload. The temperature sensors are
connected to the corresponding converter inputs
to protective the drive motor.
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 suppliers to
guarantee a safe and trouble-free operation.
Protection by residual current circuit breakers
(FI-circuit breakers):
The current IGBT frequency converters inherently produce
leakage currents > =3.5 mA. These leakage currents can
lead to false alarms in systems that are fused using a 30 mA
FI-circuit breaker.
In the event of a fault, residual current can also leak as direct
current via the protective conductor. If protection is required
on the supply side by means of a FI-circuit breaker, it is im-
portant that an FI-circuit breaker is used that is sensitive to
universal current (type B). The use of an incorrect FI-circuit
breaker other than type B can lead to death or serious injury
in the event of a fault.
The protective conductor must be designed to connect twice
via isolated terminals or via a protective conductor cross-
section with a minimum of 10 mm2 Cu to comply with the
EN61800-5-1 standard.
Operation and connection to public supply networks:
See 3.4
Relubrication units (only HRD 7 FU-120)
The enclosed relubrication units should be installed and acti-
vated before the initial start-up.
Please read the enclosed “Quick Installation Instructions for
Relubrication Units” and the “Original Start Vario Operating
Instructions.”
The relubrication units continuously release lubricating
grease. This means that used grease is forced out of the
ball bearing area. Under certain circumstances it is therefore
possible that excess grease generally collects in the area
around the blower cover or under the blower. This is normal
and does not constitute a fault.
5 INSTRUCTIONS FOR MAINTENANCE
Wearing parts are subject to the recommended maintenance
intervals (see 5.1 to 5.3 ). The service life of wearing parts
(ball bearings and fi lters) is dependent on the operating
hours, loading and other infl uences, such as temperature,
etc.
The following must be observed in addition to the operating
instructions of the respective device as well as the regula-
tions and recommendation for the complete system:
Inspection and maintenance intervals:
The owner should determine the cleaning, inspection and
maintenance interval depending on the operating hours,
loading and operating conditions.
Note!
Relubrication unit (only HRD 7 FU-120):
The battery sets of the enclosed relubrication
units must be replaced after one year of opera-
tion.
The LC units must be replaced as soon as the
grease in them is used up (no later than 3 years).
The drive is reusable.
Immediate inspection and maintenance:
In the event of vibrations, oscillations and a reduced air out-
put.
5.1 Ball bearings
The blower is operated with an ATB motor. The ball bearings
must be relubricated depending on the device type. Further
information can be found on the motor rating plate as well as
in the motor operating instructions.
Minimum life of ball bearings:
Device
Minimum life of ball bearing
HRD 2 FU
18,000 hours
HRD 60 FU
16,000 hours
HRD 7 FU
14,000 hours (with a relubrication unit)
The blower is operated with an ATB motor. The ball bearings
must be relubricated depending on the device type. Further
information can be found on the motor rating plate or the
enclosed supplementary operating instructions.
The operating hours specifi ed in the table should not be ex-
ceeded during continuous operation/use 24 hours a day.
After a storage period of 6 months, the blower bearings and
motor bearings should be checked before they are mounted
in the blower.
