5
Vacuum System Operation
and Maintenance Manual
Vacuum Compressor Operation
Belt Driven Compressor - Automatic Transmission
1. Position truck at area to be cleaned.
2. Engage parking brake.
3. With engine at idle speed and transmission in the neutral position, engage splitshaft only, controls located to the
right of the drivers seat.
4. Apply the foot brake and parking brake, then select drive, slowly release the foot brake to ensure the rear axle
is disengaged. Be sure no personnel are in front of the vehicle, during this test only.
5. With the engine at idle speed, transmission in the neutral position, engage the blower PTO control located to the
right of drivers seat.
6. Rear wheel chocks are optional (recommended on unlevel grades or for additional safety).
7. Put the transmission into the drive position.
8. Exit cab.
9. Make sure all personnel are clear of the vacuum nozzle.
10. Slowly increase speed of blower by turning out the throttle control located on the hose reel to an operating
range of 2250-2500 RPM.
11. To stop compressor, turn the throttle cable in until engine reaches idle speed.
12. Enter cab.
13. Place transmission in the neutral position.
14. Wait one to two minutes until compressor has come to a complete stop.
15. Disengage PTO and splitshaft controls.
NOTE: If you do not follow step 11 & 12 exactly as stated, damage can occur to the splitshaft/PTO arrangement.
16. Truck is now ready for transport.
LUBRICATION NOTE: All grease fittings located at the vacuum compressor
MUST
be greased at least
once a day.
