
8-3: Vacuum Blower System
Vacuum Blower Troubleshooting
1.0. Weak vacuum at tool/wand.
gauge reads normal (10” Hg to 14” Hg)
1.1. Clogged hoses or tool/
wand tube.
Disconnect hoses and carefully check for an obstruction.
1.2. excessive length
of hoses connected to
machine.
Make sure machine is rated for the conditions under
which it is being operated.
2.0. Vacuum gauge will not come up to 14” Hg
2.1.There is an air leak
somewhere in the vacuum
system.
Check vacuum relief valve for proper adjustment.
Check all hoses for cuts and breaks. Check recovery
tank lid gasket. Make sure the recovery tank drain valve
is fully closed.
2.2. The vacuum gauge is
defective.
Test and replace as necessary.
2.3.Vacuum blower is
turning too slowly.
Check blower rpm at tachometer on the CDS’ dash.
Blower rpm should be 2 times the tachometer rpm. See the
throttle control kit instructions for further troubleshooting
assistance.
3.0. Vacuum gauge reads high with no hoses attached
3.1.filter in recovery tank is
clogged.
Remove and clean or replace as necessary.
3.2. Hose from recovery
tank to blower is collapsed
internally
Inspect and replace as necessary.
Lubricants for Oil-Lubricated gears and Bearings
Table 8-1.
Ambient Temperature*
Oil grade USA
Oil Viscosity,
Centistokes at 40
°
Below 32° f (0° C)
SAe 20 Non-Detergent
100
32° to 100° f (0° to 38° C)
SAe 40 Non-Detergent
200
over 100° f (38° C)
SAe 50 Non-Detergent
250
*Refers to ambient air temperature at the cleaning tool
In applications with extreme variations in ambient temperature, a 20W - 50W multiple
viscosity oil is recommended.
Summary of Contents for CDS 4.6
Page 44: ...Assemblies and Parts Lists 7 2 CDS Machine Assembly Rear View Figure 7 2 7145 Rev C ...
Page 46: ...Assemblies and Parts Lists 7 4 CDS Recovery Tank Assembly Front View Figure 7 2 6977 Rev B ...
Page 47: ...7 5 Assemblies and Parts Lists CDS Recovery Tank Assembly Rear View Figure 7 3 6977 Rev B ...
Page 50: ...Assemblies and Parts Lists 7 8 CDS Instrument Panel Assembly Front View Figure 7 5 6988 Rev C ...
Page 51: ...7 9 Assemblies and Parts Lists CDS Instrument Panel Assembly Rear View Figure 7 6 6988 Rev C ...
Page 61: ...7 19 Assemblies and Parts Lists CDS Pump Assembly Overview Figure 7 13 7429 Rev A ...
Page 65: ...7 23 Assemblies and Parts Lists CDS Dash Box Assembly Overall View Figure 7 16 7428 Rev A ...
Page 66: ...Assemblies and Parts Lists 7 24 CDS Dash Box Assembly Figure 7 17 Rear View 7428 Rev A ...
Page 68: ...Assemblies and Parts Lists 7 26 CDS Dash Panel Assembly Overall View Figure 7 18 7427 ...
Page 70: ...Assemblies and Parts Lists 7 28 CDS Water Box Assembly Overview Figure 7 20 6990 Rev C ...
Page 71: ...7 29 Assemblies and Parts Lists CDS Water Box Assembly Figure 7 21 Parts View 6990 Rev C ...
Page 101: ...7 59 Assemblies and Parts Lists Hydra Hoe Wand Assembly Figure 7 46 2660 ...
Page 110: ...Electrical System 9 2 Figure 9 1 CDS Electrical Schematic 7425 Rev B ...
Page 111: ...9 3 Electrical System Figure 9 2 CDS Wiring Diagram 7426 Sht 2 Rev C ...
Page 112: ...Electrical System 9 4 Figure 9 3 CDS Wiring Diagram 7426 Sht 3 Rev C ...