34 - FORM NO. 56041667
American-Lincoln Technology
7765 / 7760
GENERAL TROUBLESHOOTING
PROBLEM
PROBABLE CAUSE
REMEDY
Sweeping does not
function
1. Dump door closed
2. Hopper is raised
3. Hopper switch out of adjustment
1. Open dump door
2. Lower hopper
3. Adjust hopper switch
1. Examine squeegee rubber blade for
cuts or worn spots.
2. Repair or replace hose and connection
3. Repair or replace gaskets
4. Check vacuum motor
5. Check seal on recovery tank
6. Close, repair or replace drain plug in
recovery tank.
Lack or suction at rear
1. Clogged suction hose or pick up tool
2. Loose connections between suction hose
and squeegee or between hoses or
manifold inlet.
3. Vacuum motor not operating
4. Vacuum float cage clogged
5. Vacuum float shut off
Poor water pick up at
squeegee
1. Side or rear squeegee are worn or damaged
2. Clogging in water pick up
3. Air leaks in suction hose and connection
4. Air leaks at recovery tank cover and/or
manifold gaskets
5. Poor vacuum
6. Drain hose or drain plug leakage or not
closed properly..
Water spill from squeegee
1. Side squeegee blades, poor contact with
floor
2. Squeegee blades worn or damages
3. Too much solution being applied before
making turns
4. Brushes rotating opposite direction
1. Readjust blades for proper contact
2. Replace or adjust
3. Shut off solution flow 5' to 10'
4. Check position of switches.
1. Disconnect suction hose from
squeegee; flush squeegee & hoses.
2. Check all hose connections for
looseness or damage.
3. Check hydraulic motor in recovery
4. Clean perforated metal thoroughly
5. Excessive solution in recovery drain
tank. Excessive foam build up,
change cleaning chemical mixture.
Use A-L approved materials.