Dustcontrol DC 11-Module Instrucciones Originales página 52

Test running DC 11-Module
The unit is normally adjusted to a nominal pres-
sure. The pressure can be changed by adjusting
the vacuum relief valve. Please note that it can-
not be exceed the max pressure for the unit. For
the 7.5 kW DC 11-Module the pressure can be
adjusted over the stated max pressure 19 kPa,
up to 23 kPa, under the condition that the highest
rpm, level 3 (70 Hz) is blocked.
1. Verify that the power is locked out.
2. Check that no persons can be injured if the
pump starts and that all outlets are closed.
3. Connect a manometer for the negative
pressure calibrated to –50 kPa to the suction
side as close to the pump as possible.
4. Power up the pump and listen carefully for
Test running DC Green System
Constant speed:
The pressure can be adjusted by adjusting the
vacuum valve, see Maintenance.
To check the control function:
1. Make sure that all outlets are closed. Connect
the extraction equipment with the smallest
dimension/longest hose.
2017-03-08
the following sounds: A high-pitched whine
is normal from the impeller blades. As the
pump draws cooling air through the vacuum
relief valve a weak hissing should be heard.
Check the rotation direction of the pump.
5. Measure the pressure. Compare with the
dimension point. The pressure can be
adjusted by adjustment of the vacuum relief
valve.
6. Check the function and tightness of the
connected exhaust system.
7. It is normal that the pump gets hot during
operation
8. When the fi lter is being cleaned, a number of
powerful air pulses should be heard over a
four minute period with approx. 20 seconds
interval
2. The system should then run up to speed and
set itself to the operating pressure.
3. Then remove the extraction equipment.
4. The system should then run down to energy-
saving mode after slightly more than one
minute.
DC 11-Module - 52 Part No 94153-G