Ditch Witch FXT30 - Manual (Page 62)

FX30/FXT30 Operator’s Manual
Vacuum and Pothole - 61
Determine Tank Fill Level (FX30 Trailer Only)
CMW
®
Determine Tank Fill Level (FX30 Trailer Only)
Use these reference charts to help determine how full of various materials the vacuum tank can be without
overloading trailer. Exceeding the maximum fill level will overload the trailer.
Never exceed the trailer capacity. You can exceed the vacuum tank lifting capacity if you drain the tank
down to the lifting capacity before lifting tank.
To use these charts, first select the appropriate table based on trailer and vacuum tank size. Next find the
material being excavated. If the material being excavated is not listed, find a material with similar density.
Then, determine the maximum fill level based on the amount of water in the water tank.
500-gal Vacuum Tank on T9S Trailer
IMPORTANT: For all materials, the vacuum tank should be no more than half full when lifting the tank.
Material Maximum Vacuum Tank
Fill Level
Water tank fill level full (80 gal) empty (0 gal)
wood chips (dry) 100% 100%
snow (dry) 100% 100%
water 81% 96%
light weight mud (8-10 lb/gal) 75% 88%
earth (dry, loose) 70% 83%
caliche 65% 76%
earth, loam 65% 76%
medium weight mud (10-12 lb/gal) 61% 72%
limestone (crushed) 53% 62%
asphalt 51% 59%
sand (dry) 51% 59%
earth (wet, excavated) 51% 59%
heavy weight mud (12-15 lb/gal) 50% 59%
gravel (dry) 49% 58%
shale, riprap 48% 57%
sand (wet) 39% 46%