Nilfisk-Advance SC500 Service Manual

Solution System 111Service Manual – SC500
Troubleshooting (Continues)
Trouble Possible Causes Remedy
The EcoFlex system detergent is not
reaching the brush, or is not arriving in
sufcient quantity
The detergent ow percentage is too low Check/change the percentage as
shown in the User Manual
The hydraulic circuit upstream of the detergent pump is
not triggered
Check if the hose is lled and, if
necessary, perform one or more
draining cycles
The pump (M1) is broken or there is an open in the
electrical connection
Replace the pump/repair the
electrical connection
There is foreign material/debris in the detergent tank
clogging the output hole
Clean the tank
There is debris in the detergent hoses clogging the
detergent ow
Clean the hoses
The detergent ow regulation button is not
working correctly
Check that the LED turns on,
otherwise replace the dashboard
instrument board (EB3)
Function Board (EB1) faulty Replace
Display Board (EB2) faulty Replace
Dashboard instrument board (EB3) faulty Replace
The EcoFlex system detergent is
reaching the brush even with the
machine off
The pump (M1) is broken Replace
The one-way valve is broken Replace
Water is entering the EcoFlex system
tank
The one-way valve is broken Replace
The EcoFlex system will not activate and
the LED does not come on
Dashboard instrument board (EB3) faulty Replace
The Function Board (EB1) has not been set for operation
with the EcoFlex system
If present, remove the jumper
(J6) (Figure 7) on the rear of the
function board
The symbol (A) is displayed when the
solution tank is empty
Humid fouling inside the solution tank Washing the solution tank with
clean water
Presence of water between the water level sensor and
the outer wall of the solution tank
Dry the area
Water level sensor broken Replace the sensor
The symbol (B) is displayed when the
solution tank is full
Excessive distance between the water level sensor and
the wall of the solution tank
Check the proper installation of the
sensor
Discontinued wiring harness Check the wiring harness between
the sensor and the function
electronic board (EB1)
Water level sensor broken Replace the sensor
Figure 7

Nilfisk-Advance SC500 Specifications

General

Brand	Nilfisk-Advance
Model	SC500
Category	Floor Machine
Language	English