Nilfisk-ALTO MX 521 H - Manual (Page 8)

11-600205211REVA
TROUBLE SHOOTING:
IF THIS OCCURS CHECK THIS
Solution tank is empty.
Clogged spray tip.
Pump not running or not primed.
Valve on wand not operating.
Debris is plugging cleaning tool or vacuum hose.
Drain gate is not completely closed, or seals are damaged.
Vacuum dome is not seated or is damaged.
No power to motor.
Test the switch.
Test the vacuum motor.
Test the Vacuum Circuit Board.
Spraying too long. Try spraying for 10 - 12 seconds, or about three strokes.
Heat exchanger needs to be flushed.
Wrong tool being used. Too much water passing through. Longer hose or larger
diameter hose, than standard.
Heat is not turned on.
No power in the wall outlet - check to see if the breaker has tripped.
Check to see if the fuse has blown.
No power to the heat switch - check wiring for ‘opens.”
No power out of heat switch, follow troubleshooting steps to isolate the problem.
Call your distributor for additional help.
NO HEAT
ALWAYS UNPLUG THE MACHINE BEFORE
DISCONNECTING OR CONNECTING ANY
WIRES OR COMPONENTS
.
If you are unable to diagnose the problem, contact the company from whom you purchased your MX 521 H
MAINTENANCE SCHEDULE
CLEAN ALL FILTERS X
FLUSH OUT with DESCALER
X
DAIL
Y
WEEKL
Y
MONTHL
Y
OTHER
CHECK POWER CORD
REPLACE VAC MOTOR BRUSHES
YEARL
Y
X
Around 1500 hours
REPLACE PRESSURE REGULATOR
REPLACE VAC MOTOR BRUSHES
X
Around 1500 hours
Or as needed
NO SPRAY
LOW SUCTION
NO SUCTION
LOW HEAT