Electrical Connection; Ball Bearings - Elektror HRD series Betriebsanleitung

2.5 Generation of noise
The noise generated by a blower is not constant over the whole
performance curve (see diagrams below).
HRD 1 T
1 2 3 4 5
60 120 180 240 300
Volumetric flow rate V
HRD 14 T
2 4 6 8 10 12
120 240 360 480 600 720 840
Volumetric flow rate V
HRD 2 T
2 4 6 8 10 12 14
120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 1680 m
Volumetric flow rate V
HRD 60
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 m
240 480 720 960 1200
Volumetric flow rate V
HRD 65
5 10 15 20 25 30
300 600 900 1200 1500 1800 2100 2400 2700 3000 3300 3600 3900 m
Volumetric flow rate V
HRD 7
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
600 1200 1800 2400 3000
Volumetric flow rate V
In certain unfavourable cases a sound-absorbing device may
be required (measurements by the operator are recommended).
Sound-absorbing measures are to be carried out by the
operator so as not to exceed the legally permitted peak values
at the work places near the blower.
3 Installation
3.1 Transport
G Check all parts for damage during transport before installati-
on and starting of operation.
G Do not store the blower unprotected in the open (protect
against moisture).
G Attach hoist securely. Only use hoists and load suspension
devices with sufficient load-carrying capacity.
G The belt drive and free rotating parts are to be covered with
a belt guard in accordance with DIN EN 294.
G The belt tension must be checked after an operating time of
approx. 2 hrs. Retension the belts if required.
dB(A)
90
85
80
75
6 7 8 9 10 11 m
360 420 480 540 600 660 m
.
dB(A)
95
90
85
80
14 16 18 20 22 24 26 m
960 1080 1200 1320 1440 1560 m
.
dB(A)
94
92
90
88
16 18 20 22 24 26 28 m
.
dB(A)
98
96
94
92
1440 1680 1920 2160 2400 m
.
dB(A)
100
98
96
94
35 40 45 50 55 60 65 m
.
dB(A)
105
100
95
100 m
3600 4200 4800 5400 6000 m
.
3.2 Installation, assembly
G Install the blower horizontally and weather-protected.
G Do not subject the blower to any vibrations or shocks.
G Bolt the blower securely at the point of installation on a solid
and level base.
G Open intake and discharge ports are to be protected by wire
guards in accordance with DIN EN 294.
G Belt drive and free rotating parts are to be covered with a
3 /min
belt guard in accordance with DIN EN 294.
3 /h
G The belt tension must be checked after an operating time of
approx. 2 hrs. Retension the belts if required.
G Ensure adequate motor cooling; max. ambient temperature
+40° C.

3.3 Electrical connection

☛
/min
3
3 /h Note!
The instructions of the relevant electric motor
manufacturer should be observed. Connect in
accordance with relevant local regulations. The work
described in this section must only be carried out
by an electrical specialist.
Checking direction of rotation
3 /min
3 /h
Start operation of blower.
The direction of rotation of the impeller must correspond to
the directional arrow on the housing.
4 V-belt drive
3 /min
3 /min
☛
Note!
The blowers are fitted with V-belt pulleys for narrow
V-belts in accordance with DIN 7753.
To avoid premature damage to the grooved ball
bearings, the V-belt drives must be tensioned
correctly. The V-belt drive must be dimensioned in
3 /min
accordance with the appropriate method of calcula-
3 /h
tion applied by the respective V-belt manufacturer.
G The fan belt pulley must not be modified.
G The max. permissible fan speed must not be exceeded
(see table section 1).
G The belt drive and free rotating parts are to be covered with
3 /min
a belt guard in accordance with DIN EN 294.
/h
3
G The belt tension must be checked after an operating time of
approx. 2 hrs. Retension the belts if required.
G Never operate the fan if the protective guard is not attached
and screwed on securely (risk of injury).
5 Maintenance
Wearing parts are subject to the recommended maintenance
intervals and are a constituent part of the applicable warranty
claims. The service life of wearing parts (ball bearings, V-belts
and filters) depends on the operating hours, the load and other
influences, such as temperature, etc.

5.1 Ball Bearings

The fan is equipped with enclosed deep groove ball bearings,
which do not have be to re-greased and have a minimum service
life of approx. 12,000 hours. We recommend exchanging the
ball bearings before the end of service life (at least 12,000 hours).
The 18-month operating time is not to be exceeded given con-
tinuous operations of 24 hours a day.
GB IRL
7