Nederman FE840, User Manual

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FE840/FE841
3 Switch.
4 Time delay (only on FE841).
5
indicates that the current supply to the elec-
tronics is operative. The light turns off when the
filter is full (only on FE841).
6 FILTER SERVICE (6) indicates an error (only on
FE841).
Either the filter is full or there is a stop in the duct-
ing. If the filter is full, see
Section 5.2 Change the
filter and empty the coarse separator . If there is
a stop in the ducting, remove the object from the
ducting.
7 Holder for welding or welding return cable (only
on FE841).
8 Exhaust.
3.1 Technical data
FE840/FE841
Dimensions See Figure 3
Noise level 75 dB(A) ISO 11201
Weight 15.8 kg (35 lb)
Voltage 120/220–240 V AC
Power 1000 W (1.3 hp)
Max. vacuum 22 kPa (88 in. w.g.)
Capacity
150 m
3
/h (88 cfm) with 2.5 m hose
Filter area
5.3 m
2
Filtration efficiency 99.7 %
4 Using FE840/FE841
See Figure 3 .
4.1 Manual mode
•
Switch (3) to position
1
.
The unit will now work continuously.
4.2 Automatic mode (only automatic
units)
1 Switch (3) to AUTO position.
2 Place the welding cable, or welding return cable
in the cable holder (7). The unit will now function
when the welding arc is struck and cease opera-
tion when the arc is broken.
A variable time delay (4) enables the operator to regu-
late the period of time the FE840/FE841 continues to
work after the arc is broken.
5 Maintenance
Installation, repair and maintenance work must be
carried out by qualified personnel using only origin-
al spare parts. Contact your nearest authorised dis-
tributor or Nederman for advice on technical service
or if you require spare parts. See also www.neder-
man.com.
5.1 Change carbon brushes
WARNING! Risk of personal injury
• Remove the plug from the electricity supply
before carrying out any work on the motor
unit.
• The carbon brushes are to only be replaced
by a qualified electrician. Instructions for fit-
ting are included with every brush set.
5.1.1 Units with automatic mode
See Figure 4 .
NOTE!
When removing the motor assembly, please
note the position of filter indicator hoses (X).
Care is to be taken when removing or re-fit-
ting the hoses so that the differential pressure
guard is not damaged.
5.2 Change the filter and empty the
coarse separator
A new filter needs to be fitted when the suction be-
comes inadequate, or the indicator lamp is showing
FILTER SERVICE (only units with automatic mode).
EN
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