
22
Owner’s Manual for DF7500 Dust Suppression System
Maintenance and Troubleshooting
Emptying Water Circuit
After each use, empty the water system must to remove
sediment from the inlet filter and to prevent fouling.
1.
Figure 4-2. Open Valves
2.
See
. Disconnect hose from inlet (B) and
open inlet valve (C).
Figure 4-3. Disconnect Hose and Open Valve
3.
Allow system to drain.
4.
Close inlet valve.
5.
Close nozzle valves.
Cleaning Water Filters
The unit is equipped with an inlet filter and nozzle filter.
Both must be cleaned semiannually or whenever
performing system maintenance.
Cleaning Inlet Filter
1.
See
. Unscrew and remove water inlet (B).
2.
Remove filter cartridge.
3.
Tap cartridge on a solid surface and blow with com-
pressed air to remove sediment.
4.
Install cartridge and replace inlet filter plug.
Figure 4-4. Inlet Water Filter
Cleaning Nozzle Filter
1.
See
. Remove nozzle filter plug (C).
2.
Remove filter cartridge.
3.
Tap cartridge on a solid surface and blow with com-
pressed air to remove sediment.
4.
Install cartridge and replace inlet filter plug.
Figure 4-5. Nozzle Water Filters
Nozzle Cleaning
Clean nozzles on a semiannual basis or whenever
clogged.
1.
See
Figure 4-1
. Remove nozzles (A) from blower.
2.
Soak nozzles in antilimestone solution over night.
3.
Rinse nozzles.
4.
Reinstall nozzles.
Figure 4-6. Cleaning Nozzles
008796
A
008796
C
B
008957
B
A
008957
C
A
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