Nilfisk CONTRACTOR SILENT Instruction manual
CONTRACTOR SILENT
NL
FR
DE
EN
Instruction manual........................ 1 - 12
Betriebsanleitung .......................... 13 - 24
Manuel d'Instructions.................... 25 - 36
Gebruikershandleiding.................. 37 - 48
IMPORTANT: Read this instruction manual
before you start up your high pressure washer
for the rst time.
This machine is a high pressure washer producing a water jet under high pressure which is why
severe injuries can occur if the safety precautions
are not observed.
Therefore a complete understanding of the contents of this instruction manual is required in order
to prevent injuries to yourself, objects and persons
nearby, and the machine itself.
Contents 2 - 13 EN
1.0 Survey of models.........................................3
1.1 Model tag................................................ 3
2.0 Instructions for use.....................................4
Safety precautions and warnings
2.1 Unpacking...............................................4
2.2 Operation................................................ 4
2.3 Safety devices on the cleaner.................5
2.4 General................................................... 5
3.0 Operating instructions................................6
3.1 Connections ...........................................6
1. High pressure hose.............................6
2. Water connection................................6
3. Spray handle - accessories ................6
4. Diesel engine...................................... 7
5. Fuel for engine and burner .................7
3.2 Starting-up procedure............................. 7
3.3 Operation................................................ 7
3.4 Spray lance, pressure regulation............ 8
3.5 End of operation ..................................... 8
3.6 Transport and lifting directions................ 9
3.7 Storage...................................................9
4.0 Fields of application and
working methods....................................... 10
4.1 Fields of application.............................. 10
4.2 Working pressure .................................10
4.3 Detergents............................................10
4.4 Working methods..................................11
5.0 Pre-priming ...............................................11
6.0 Maintenance............................................... 12
6.1 Oil ......................................................... 12
6.2 Sludge container ..................................12
6.3 Water lter ............................................ 12
6.4 Cleaning of high pressure nozzle ......... 12
7.0 Trouble shooting and correction..............13
Designations EN
(see drawing inside back cover)
1. Ignition key for electric start
2. Connection of water and water lter
3. Thermometer
4. Pump oil level inspection and ll cup
5. Pressure gauge
6. Thermostat, burner
7. High pressure outlet
8. Spray handle
9. Spray lance
10. Model tag
11. Sludge container
12. High pressure hose
13. Oil drain plug, high pressure pump
14. Air lter, diesel engine
15. Filler hole for diesel (auto diesel)
16. Diesel lter, diesel engine/burner
17. Hour counter
18. Shift lever for hot/cold water
19. Start, oil burner
20. Oil lamp, diesel engine
21. Filament lamp, diesel engine
22. Water temperature lamp, engine
23. Charging lamp for battery
24. Valve for regulation of water volume
25. Oil dip-stick
26. Expansion tank, diesel engine
27. Lifting points on frame
The environmental policy of ALTO
ALTO has made it a natural part of the concept of
the company to reduce the effect on our environment as much as possible. This plan is effected
through a constant development in all branches
of the company so that the greatest number of
elements in our high pressure washers affects the
environment to a minimum.
This product too is characterised by the attitude
of ALTO towards the environment.
For the production of this high pressure washer
the latest technique and technology has been applied. The consumption of unnecessary subsidiary
materials has been minimized, and during the nal
test of the product the test water is recycled.
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1.0 Model survey EN
1.1 Model tag
This ALTO high pressure washer has the serial designation CONTRACTOR.
The model designation appears from the text on the cabinet, i.e. CONTRACTOR SILENT
and the model tag (Pos. 10) at the back of the machine.
The model tag provides the following important information:
1. Producer
2. Model designation
3. Production year/week
4. Serial number
5. Pump pressure
6. Water volume
7. Max. pressure
8. Max. temperature
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2.0 Instructions for use Safety precautions and warnings EN
Before starting up your high pressure washer for the rst time, we advise you to read through the following
sections: 2.0 Instructions for use and 3.0 Operating instructions and to follow all instructions to ensure the
protection of user, surroundings and machine.
2.1 Unpacking
Upon the unpacking of your machine please check it for any defects. If you nd any, we kindly ask you to
contact your ALTO distributor.
2.2 Operation
This machine produces a high pressure jet and operation contrary to the instructions can cause severe
injuries!
For your own and the safety of others the following precautions should always be observed:
l WARNING! Never direct the water jet towards people, pets, electric wiring, or the machine
itself.
l WARNING! Never try to clean clothes or footwear on yourself or other persons.
l We recommend you to wear goggles during operation.
l Never work barefoot or with sandals.
l Operator and anyone in immediate vicinity of the site of cleaning should take action to pro-
tect himself from being struck by debris dislodged during operation.
l According to regulations persons under the age of 18 must not operate cleaning machines
with a working pressure above 70 bar (applies to this machine).
l The machine should be placed as far away from the cleaning site as possible.
l Only let instructed personnel operate the machine.
l Don’t start the machine until the high pressure hose has been correctly mounted.
l Spray handle and lance are affected by a thrust during operation - therefore always hold the
spray lance rmly with both hands.
l At intervals during operation, the machine should be stopped and the spray handle secured
against inadvertent use by locking trigger with locking device.
l Only activate the trigger by hand. Never tie it up or x it in any other way.
l Avoid damage to the high pressure hose such as running over by a car, squeezing, pull, knots/kinks
etc. and keep it away from oil and sharp or hot objects, as such may cause the hose to burst.
l Danger of scalding! Never dismount the high pressure hose or the water inlet hose while the machine
is in operation. Disconnect the cleaner, shut off the water supply and activate the spray handle before
dismounting the high pressure hose or the water inlet hose.
l According to the legislation in many countries it is forbidden to use the machine in an environment
where there could be a danger of explosion. If any doubt arises, please contact your local authorities.
Important: OFFSHORE
Never use the machine in an environment where there could be a danger of explosion
(according to EN-50014).
l WARNING! High pressure hoses, nozzles and connections are important for safety when operating the
machine. Only use the high pressure hoses, nozzles and connections prescribed by ALTO.
l For safety reasons only use original ALTO accessories and spare parts.
l In icy conditions never start the cleaner until machine, hoses and accessories have thawed. Otherwise
the machine could be damaged.
l The cleaner should not be covered during operation.
WARNING!
Diesel lling
Always stop the engine and let it cool for at least two minutes before lling with fuel.
Avoid spilling diesel. If diesel nevertheless is spilled while relling, the engine must not be started until the
spilled diesel has been removed.
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Safety precautions and warnings EN
If the machine is placed in a trailer, any diesel spillage must be removed before restarting the machine.
Never use an open ame near the machine.
It is forbidden to smoke while relling with diesel.
Also read the instruction manual for the Mitsubishi engine.
NB: Never run the machine in a closed room. The exhaust gases are dangerous.
2.3 Safety devices on the machine
Circulation valve (safety valve)
The pressure side of the high pressure pump is tted with a circulation valve (safety valve). This valve
circulates the water back to the suction side of the pump when the spray handle is closed or if a nozzle
is blocked. The circulation valve has been constructed as a safety function ensuring that the pressure will
never exceed the working pressure by more than 35 bar. At this pressure the circulation valve will automatically switch from high pressure to circulation mode, approx. 15 bar.
Never let the machine run for more than 5 min. upon release of the spray handle trigger as it may be
damaged. The valve has been adjusted and sealed from the factory. This adjustment must not be chan-
ged! The circulation valve ensures that the machine becomes devoid of pressure when it is stopped.
Engine protection
The diesel engine will automatically stop if the oil level is insufcient or if the temperature of the cooling
water is too high. The engine can be restarted when having been relled with oil or dhet water has cooled.
2.4 General
l It is not allowed to clean asbestos-containing surfaces with high pressure, unless using special equip-
ment.
l Persons under the inuence of alcohol, drugs and medicine should not operate the machine.
l WARNING! This machine has been constructed for use with ALTO detergents. The use of other deter-
gents or chemicals may cause problems as to the operation and the safety.
l When using detergents the instructions should always be strictly observed.
l Don’t use the machine if important parts of the equipment are damaged - i.e. safety devices, high pres-
sure hoses, spray handles, cabinet.
l The most efcient cleaning is obtained if you adjust the distance to the surface which is to be cleaned.
Thus you will also avoid damaging the surface.
l Do not let the machine run for more than 5 minutes once the spray handle has been released (the
pump then circulates the water internally and the machine will overheat unless stopped after 5 minutes).
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