Nilfisk-ALTO CR 1500 - Manual (Page 34)

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
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.
1. Examine squeegee rubber blade for cuts
or worn spots.
2. Repair or replace hose and connection
3. Repair or replace gaskets
4. Check seal on recovery tank
5. Check vacuum motor
6. Close, repair or replace drain plug in
recovery tank.
Water spill from squeegee 1. Side squeegee blades, poor contact with
fl oor.
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 fl ow 5’ to 10’
4. Check position of switches.
Lack of 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 fl oat cage clogged
5. Vacuum fl oat shut off
1. Disconnect suction hose from squeegee;
fl ush 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
American-Lincoln approved materials.
A-34 / ENGLISH
A-34 - FORM NO. - 56041719 - CR 1500