Trouble-Shooting Schedule - Nederman 591 Serie Manual De Instrucciones

GB
Directions for use - fig. 4
The damper is designed to be used in a dry environment in
combination with Nederman products for extracting fumes,
smoke or dust. Check that the damper motor can indicate
closed and opened damper position.
Automatic regulation of damper
(Only products with sensor.)
Fit the sensor clamp on the welding cable. Before welding
begins, check that the sensor clamp is in place. The sensor
closes the damper automatically after completion of welding
with a delay time of approximately  min. (can be adjusted,
see Delay time). The sensor responds to welding currents
from 8 to 400 A. The sensor has a LED (A) which indicates
when the sensor has received a signal.

Trouble-shooting schedule

WARNING! Risk of personal injuries. Beware of primary voltage.
The damper does
not open.
The damper does
not open.
The damper does
not open.
The damper does
not close completely.
Noise from the dam-
per.
The damper opens
without any reason
(automatic damper).
0
Motor Damper
1. Cable or connection failure.
2. Defective fuse F.
3. Incorrect power supply or
voltage failure.
The sensor does not work
(automatic damper).
The damper motor does
not work.
Dirt in the damper housing
and on the damper blade.
The sensor indicates because
of disturbing surrounding
equipment, e. g. other wel-
ding equipment or high vol-
tage units.
Manual regulation of damper
The damper can be opened or closed with the switch B (see
picure) or with the switch on the Fume Extractor hood.
WARNING!
Risk of personal injuries.
• When the damper has been installed, check that there is
enough suction capacity in the ducting system before any
work has begun. Check the fan impeller rotation direction
and the damper function.
• The equipment must not be used in an explosive environ-
ment.
1. Check that cables and cable connections are in good
condition and screws are fastened.
2. Change the fuse F in the operation box.
3. Check correct voltage connection: block J6. Check
with a voltmeter if any voltage (24 V +- 0%) on block
J7.
• Check that the sensor cable is in good condition.
• Check the sensor connection to block J4 and that
screws are fastened.
• Check that the LED on the sensor clamp indicates
during welding.
• Check that motor cables are in good condition
• Check according to wiring diagram that cable con-
ductors are correctly connected to the motor block
and to block J.
• Check that screws are fastened.
• Check with a voltmeter if any voltage (24 V AC) on
block J.
• Remove the damper motor (pull the button A, see fig. ).
• Turn the damper blade with a spanner a couple of ti-
mes backwards and forwards until the dirt is gone.
• Turn the damper blade to closed position.
• Refit the damper motor and check that it indicates clo-
sed damper position.
Eliminate or screen off the disturbances.