GB
9. PROBLEMS, CAUSES AND SOLUTIONS
The table below lists the main functional problems, with relative causes and solutions. If you have a problem that is not listed, or for information re-
garding different causes and solutions, contact one of our technical assistance centres.
Attention
The machine is provided with an additional instructions manual drafted by the motor manufacturer, containing all essential informa-
tion for current use and maintenance. Read the contents carefully.
OPERATIONAL PROBLEMS
• The water jet is regular, but with very
•
low pressure values
• During functioning the pressure is irregular
• Vibrations in the high pressure pipe or the
•
pump functions with irregular pulsations,
•
variations in pressure and noisiness
• The H.P. pump oil displays traces of water
•
(the oil takes on a whitish colouration)
• Loss of water between head and pump body
• Loss of oil between head and pump body
• The adjustment valve is reset with the
•
actioning lever at rest
• The machine does not provide any detergent
10. DISPOSAL
At the end of its useful life, you have to scrap and dispose of this product by taking it to a local differentiated waste collection center in conformity
to law.
Before scrapping, check the serial number plate on the machine: if it has the symbol
(Waste Electrical and Electronic Equipment, WAEE).
The user must inquire about the local electrical and electronic waste collection system and follow its instructions.
Illegal disposal of this product with normal domestic waste can seriously harm the environment and health and is subject to administrative penalties.
CAUSES
• Nozzle worn
• Nozzle unsuitable for the machine type
• Bypass valve not calibrated
• Water supply filter clogged
• Defective water network connection
• Detergent tap open or leaks
• Worn pump gaskets
• Deformed or clogged nozzle
• Dirt in the bypass valve
• Hydraulic supply interrupted or insufficient
• Detergent tap open or leaks
• The pump sucks air up
• Air inside the piping
• Detergent tap on and/or detergent
•
container empty
• Bypass valve blocked
• Pump gaskets worn
• Inlet and/or delivery valves of the pump are
•
blocked, dirty or worn
• Machine start-up without having completely
•
discharged the air from the circuit
• High percentage of humidity in the air
• Pump gaskets worn
• Worn gaskets
• Worn pistons
• Pump body side seal rings worn
• Loss in the spray gun
• Losses from the high pressure pipe or
•
from other parts of the hydraulic circuit
• Defective adjustment valve
• Detergent filter clogged
• Detergent tap closed
• Empty recipient
22
SOLUTIONS
• Replace the nozzle
• Replace the nozzle
• Carry out valve calibration
• Clean the filter or replace it
• Check the water network
• Turn off the detergent tap or replace it
• Replace the gaskets
• Clean or replace the nozzle
• Clean the valve
• Check the hydraulic network
• Close the detergent tap or replace it
• Check for the presence of any leaks and tighten
•
all the junctions
• Detach the spray gun of the H.P. pipe and allow
•
the water to exit for some minutes with the
•
machine on
• Close the detergent tap and/or fill the detergent
•
container
• Dismount the valve and clean or replace it
• Replace the gaskets
• Check the closure surfaces of the valves and
•
clean them or replace the valves
• Remove the spray gun and allow the H.P.
•
pump to function for a few seconds
• Replace the oil twice as often as prescribed
• Replace the gaskets
• Replace the gaskets
• Replace the pistons
• Replace the seal rings
• Replace the spray gun
• Check the status of the H.P. pipe and the
•
entire hydraulic circuit
• Disassemble the valve and clean or replace it
• Clean filter or replace it
• Open the tap or replace it
• Fill the recipient
, it means that disposal is regulated by EU Directive 2003/96