Metering The Amount Of Blast Media; Refilling - Nederman Vacuum Blaster Manual De Usuario

Operate the Vacuum Blaster as follows:
1. Fill Vacuum Blaster with dry and clean blasting media over the sieve, see figure 1
item 8.
WARNING!
Check that no tools or other objects are situated between the filling cone and the
filling cone ring.
WARNING!
Make sure the system ball valve, see figure 5 item 5, is closed.
3. Pressurise Vacuum Blaster by starting the compressor or opening the ball valve
between the compressor and the machine.
4. Now open the system ball valve, see figure 5 item 5.
–
The system pressure is indicated on the gauge, see figure 5 item 8.
5. Set the wanted blasting pressure with the pressure reducer, see figure 5 item 3.
Turning clockwise will increase the pressure, turning it anti-clockwise will decrease
the pressure.
–
The set pressure can be read of the gauge, see figure 5 item 2. Minimum
blasting pressure is about 1.5 bar.
6. Electric powered models only: Start the electric vacuum cleaner.
7. Firmly hold or fix the end of the installed blast hose and direct the nozzle on the
surface to be treated.
8. Start Vacuum Blaster with the installed deadman handle or the remote control
system.
– The main air valve is opened and the decompression valve is closed.
Compressed air flows to the filling cone valve. The filling cone will close the
pot.
–
Pressure builds up in the pot.
–
The compressed air also flows to the blast hose and nozzle (transportation air).
– The metering valve is opened as well, so the blasting media can fall into the
transportation air and be carried along.
– Compressed air powered models only: The air driven vacuum cleaner starts.
5.1

Metering the amount of blast media

Setting the metering can best be done with two people, one holding the hose package
and nozzle and the other operating the abrasive metering valve, see figure 6 item 2.
Start with the metering valve completely closed. Slowly open by turning the knob
anticlockwise. Stop opening the valve when a constant and regular flow of abrasive out
of the installed nozzle is created. (Default 3 turns.)
NOTE! Too much media will lead to an irregular flow and will not increase the
production.
5.2

Refilling

Close the system ball valve, see figure 5 item 5. Fill Vacuum Blaster with dry and clean
blasting media over the sieve.
Risk of personal injury.
Risk of personal injury.
Vacuum Blaster EN
21