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5.3 Interrupting work
This machine is built to work with continuously, leave the 900DC running during short interruptions.
When temporarily interrupting the work (1/2 hour – 1 hour), turn off the fan unit only. Pulse cleaning
of the filter system will continue and will increase the life-time of the filter cartridges.
During a longer stand still of the dust collector, first switch off the fan unit. Let the pulse cleaning cycle
run for +/- 30 minutes. Switch off the compressor unit and rotating valves.
Disconnect the power-supply cable.
Close the sliding cover of the silencer when the machine is turned off. This prevents moisture, dust and
other contaminants to enter the machine
Prevent unauthorized persons from getting access to the dust collector or take measurements to
prevent unauthorized working with the equipment.
IMPORTANT NOTE !
Always close off the inlet of the dust collector when running the pulse cleaning cycle!
Failure to do so results in blown out dust, which can be hazardous to the health !
5.4 Startup Problems
If the light ‘Failure’ is lit up, a fault has been detected and the system has shut down.
If the light ‘Phase Incorrect’ is lit up, the phases of the power connection are wrong.
If the light ‘Control Voltage’ is lit up, the power supply is wrong.
Warning! Work on electrical equipment or operating materials may only be undertaken by a
skilled electrician or by trained persons under the guidance and supervision of a skilled
electrician as well as in accordance with the electrical engineering regulations.
The 900DC has a softstarter to protect the electrical equipment. On this softstarter the
information regarding the failure is shown to help resolve problems.
The soft starter can be found in the electrobox.
The LED on the soft starter shows the problem in code:
LED OFF
Check power connections and power source
LED ON
Check isolation contactor for proper closure
Check presence of line power
LED Flashing 1 x - Overload
Reset Overload
2 x - Over Temperature
Trip on Over Temperature. Allow time for unit to
cool.
3 x - Phase Reversal
Check for proper phase rotation of line power
4 x - Phase Loss / Open Load
Confirm that 3-phase is present.
5 x - Phase Imbalance
Check line current present in each phase. Unit
will trip if imbalance is >50%
6 x - Shorted SCR
Please contact your Blastrac dealer .
