Troubleshooting; General Machine Troubleshooting - Nilfisk Liberty SC50 Instrucciones De Uso

6/2020

TROUBLESHOOTING

GENERAL MACHINE TROUBLESHOOTING

Problem
Poor water pick-up
Poor scrubbing performance
Inadequate or no solution
flow
Solution tank empty Indicator
(X23) appears when there is
solution in the tank
Machine does not power ON
No FWD/REV wheel drive
No Detergent Flow
Magnetic SmartKey Errors
12/2017
Possible Cause
Vacuum hose not connected to the squeegee assembly
Worn or torn squeegee blades
Squeegee out of adjustment
Recovery tank full
Recovery Tank Drain Hose (37) leak
Recovery Tank Gasket (47) leak
Debris caught in Squeegee (11)
Recovery Hose between squeegee and recovery tank
clogged
Using too much solution
Vacuum OFF or set to quiet mode
Worn brush or pad
Wrong brush or pad type
Wrong cleaning detergent
Moving machine too fast
Not using enough scrub pressure
Not using enough solution
Solution tank empty
Solution filter (33), lines or valves clogged
Solution Shutoff Valve (34) closed
Solution Solenoid Valve (32) plugged or defective
Solution pump (35) air locked
No solution flow
Solution sensor (flow meter) failed
Machine Battery Connector (43) disconnected
Tripped 5 Amp circuit breaker (E)
Blown Main Fuse 100 Amp (42)
Charger Interlock engaged
A direction has not been selected
Speed Adjustment Knob (P) rotated to none
Emergency Stop (D) activated, display will indicate
"Release the red emergency stop button to continue."
along with Fault Indicator (X14)
Drive system speed controller
Empty Detergent Cartridge (3)
Plugged or kinked detergent flow line
Detergent pump
No Key Indicator (X19).
-No Magnetic SmartKey is present on the SmartKey
Reader (A).
Key Read Error Indicator (X20).
- Magnetic SmartKey present on the SmartKey Reader
(A) cannot be read.
Restricted User Key Indicator (X21).
-Magnetic SmartKey present on the SmartKey Reader
(A) is not programmed to be used with this machine.
INSTRUCTIONS FOR USE
Remedy
Connect vacuum hose to squeegee assembly
Reverse or replace
Adjust so blades touch floor evenly
across entire width
Empty recovery tank
Secure drain hose cap or replace
Seat gasket properly / Replace gasket
Clean squeegee assembly
Remove debris
Reduce flow via control panel solution switch
Turn vacuum ON or set vacuum to high
Replace brush or pad
Consult Nilfisk
Consult Nilfisk
Slow down
Increase scrub pressure
Increase solution flow
Fill solution tank
Clean solution filter and flush lines
Open solution shutoff valve
Clean or replace valve
(contact Nilfisk Authorized Service Center)
See Problem "Inadequate or no solution flow" check remedies for
no solution flow.
Change menu Option "Ignore water meter?" to Yes, to use
machine until sensor can be fixed.
(contact Nilfisk Authorized Service Center)
Reconnect battery connectors
Check for electrical short circuit & reset
Replace Main Fuse 100 Amp
Unplug Charger
Press (Q) to select Forward direction or press (R) to select
Reverse direction.
Rotate Speed Adjustment Knob (P) clockwise
Reset the Emergency Stop
Check error fault codes
(contact Nilfisk Authorized Service Center)
Fill detergent cartridge
Purge system, straighten lines to
remove any kinks
Check pump, wiring and lines
Place an appropriate SmartKey onto the SmartKey Reader.
Clean both the SmartKey and the SmartKey Reader using a
clean cloth. Depress the SmartKey between your thumb and
forefinger to insure free movement of the magnet.
Place a SmartKey that has been programmed to be used with
this machine onto the SmartKey Reader.
56091204 - Nilfisk Liberty SC50
ENGLISH - A
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