Nederman VAC 12/20 Manual De Instrucciones página 18

EN VAC 12/20
WARNING!
Ensure the dust collector is attached to the unit's inlet and the silencer attached
to the outlet. Suction at the inlet is very powerful and any contact with the fan
wheel could result in severe injury.
WARNING!
The belt guard must always be fitted except during maintenance work on the
transmission. Maintenance must be undertaken by qualified personnel. Refit
the guard when the work is finished. The Figures in this manual without the
guard in place are for illustration purposes only and do not imply that the unit
ever is to be run without the guard.
WARNING!
The thermal switches in the unit must always be enabled. Switch off and lock
the mains maintenance switch or remove the mains fuses before starting the
inspection.
CAUTION!
The dust collector must be positioned before the vacuum unit. The dust
collector must be designed and maintained to prevent coarse particles and dust
from being sucked into the fan. The filtering of fine dust must be sufficient
to prevent undue wear to the fan. The unit must be stopped immediately for
inspection by suitably qualified personnel if the fan rotates unevenly, or if
damage to the fan or its bearings is suspected.
4 Description
4.1 Technical data
Table 4-1: Technical data
VAC
Operating temperature
Dimensions
Inlet mm(in)
Outlet mm (in)
Weight without motor, kg (lb)
Total weight*, Europe and Asia, kg (lb)
Total weight*, North America, kg (lb)
Total weight*, Brazil, kg (lb)
Maximum vacuum, kPa (in.W.G.)
Specified capacity, m
in.W.G.)
Maximum flow at rated motor power
3
m /h (cfm)
Noise level
ISO 11201 dB(A)
Noise level**
ISO 11201 dB(A)
Motor data
Motor power, kW (HP)
Control voltage
* Motor weight included.
** With optional silencer.
18
Risk of cutting injury.
Risk of personal injury.
Risk of electric shock.
Risk of equipment damage.
12-3000
Ø 250
(9.84")
261 (575)
412 (908)
397 (875)
396 (873)
13.3 (53)
3 3000/12
/h /kPa (cfm/
(1766/48)
3500
(2060)
75.4
68.6
18.5 (25)
24 V DC ± 10% (solenoid for 24 V AC enclosed)
20-1500 20-2500 20-3000
-20 °C to +40 °C (60 °F to 104 °F)
See Figure 9
Ø 200 (7.78")
Ø 200 Ø 200 Ø 250
(7.78") (7.78") (9.84")
370 (815) 370 (805) 370 (805)
573 (1263) 616 (1358) 626 (1380)
546 (1204) 614 (1354) 635 (1400)
505 (1113) 602 (1327) 628 (1385)
20.1 (81) 21.5 (86) 21.5 (86)
1500/20 2500/20 3000/19
(883/80) (1471/80) (1766/76)
2300 3000 3900
(1354) (1766) (2295)
71 74.5 74.5
66 67 68
See motor label
22 (30) 30 (40) 37 (50)
20-4000
Ø 250
(9.84")
370 (805)
698 (1539)
786 (1733)
663 (1462)
22 (88)
4000/16.5
(2354/66)
5000
(2943)
74.5
68
45 (60)