Nilfisk ALTO Pressure Washer Contractor Diesel User Manual

CONTRACTOR DIESEL  
DA  
Instruktionsbog ............................. 1 - 12  
NO  
Instruksjonsbok............................. 13 - 24  
SV  
Instruktionsbok ............................. 25 - 36  
EN  
Instruction manual........................ 37 - 48  
DE Betriebsanleitung.......................... 49 - 60  
FR  
Manual d’Instructions.................... 61 - 72  
NL  
Gebruikershandleiding.................. 73 - 84  
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2003-11-11  
1.0 Safety  
EN  
Your CONTRACTOR DIESEL washer has  
been developed and manufactured in  
accordance with the latest working safety  
regulations.  
Caution! However, to prevent possible perso-  
nal accidents or damage to any other product,  
we advise you to read carefully through this  
section on safety precautions before you  
operate your washer for the first time.  
11. The machine must not be used in  
surroundings with risk of fire or explosion.  
12. Exhaust from engine and burner contains  
poisonous carbon monoxide gases. Avoid  
inhalation of exhaust gases. Never run the  
machine in a closed garage or confined area.  
13. To prevent fire hazards and to provide  
adequate ventilation, keep the engine at  
least 1m/3ft away from buildings and other  
equipment during operation.  
General safety precautions  
1. Always use both hands for operating spray  
equipment to maintain complete control of  
the lance.  
2. Water jets should never be directed towards  
people, pets, electrical wiring or the ALTO  
CONTRACTOR DIESEL machine itself.  
14. Do not place flammable objects such as  
gasoline, matches, etc., close to the  
machine while it is running.  
15. Allow only properly instructed personnel to  
use the machine.  
16. Never let children operate your  
CONTRACTOR DIESEL at any time.  
17. Don’t use the machine if important parts of  
the equipment are damaged - i.e. safety  
devices, high pressure hoses, spray  
handle, cabinet.  
3. Always switch off engine during work breaks.  
4. Connect or disconnect the high pressure  
hose ONLY when the engine is stopped.  
5. Use only those hoses and nozzles  
specified by ALTO.  
6. The machine should only run for a  
maximum of five 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).  
7. The pump is equipped with a high pressure  
relief safety valve. This adjustment, like any  
others that require the use of tools, should  
only be made by a trained service technician.  
8. Operating the machine when it, or any  
attachments are frozen, is dangerous. Be  
sure everything is thawed before operating  
the machine.  
1.1 Warning  
Refilling with diesel:  
Always stop the Ruggerini engine and allow it to  
cool off for at least two minutes before filling with  
diesel. Avoid spilling diesel. If diesel  
nevertheless is spilled while refilling, the engine  
must not be started before the spilled diesel has  
been removed. If the machine is located in a  
trailer, any diesel spillage must be removed  
before restarting the machine. Never use an  
open flame near the machine. It is forbidden to  
smoke while refilling with diesel. Read the in-  
struction manual for the Ruggerini engine  
carefully.  
NOTE: Never run the machine in a closed  
room. The exhaust gases are dangerous  
1.2 Asbestos  
9. Manufacturer’s instructions for the use of  
any detergents should be carefully  
observed at all times.  
10. During work breaks, or any time lances or  
accessories are changed, the spray handle  
must be secured by rotating the safety  
knob into position O.  
To avoid release of asbestos fibers into the  
environment, ALTO strongly recommends that  
this machine not be used for cleaning of  
materials or surfaces of materials containing  
asbestos. If this machine is to be used for  
asbestos removal do so only in complete  
compliance with approved goverment guidelines  
and/or procedures.  
I
0
38  
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2.0 Motor Protection Device  
3.0 Key photo’s  
EN  
The diesel engine is equipped with a protection  
device called ”Oil Alert”, which stops the engine  
if the oil level is insufficient. If this occurs, check  
the engine for leaks, and after making sure the  
machine is level, refill it to the proper level. The  
engine can then be restarted.  
(See drawing on the cover)  
1. Water inlet and filter  
(quick-coupler for supply hose)  
2. Pump oil level inspection and fill cup  
3. Oil drain plug for pump  
4. Sludge container  
5. Engine oil dipstick and filler tube  
6. Oil drain plug for diesel engine  
7. Diesel filling cap  
8. Burner coil  
9. Fan for burner  
10. High pressure outlet (male quick-  
connector)  
11. Battery  
12. Container rack for detergents  
13. ”Jerry-can” for heating oil  
14. Burner fuel filter  
15. Frame lift points  
16. Thermostat  
17. Thermometer  
18. Key for electric start  
19. Battery charge control  
20. »Oil Alert« (see section 2.0)  
21. Pressure gauge  
22. Knob for adjustment of water volume  
23. Fuse (protection of electronic unit)  
rating 1.25 AT  
Double spray lance with hose  
24. High pressure, steam-capable hose  
25. Male connector  
26. Quick coupler  
27. Pressure adjustment  
28. Release trigger  
29. Standard double spray lance  
30. Low pressure nozzle  
31. High pressure nozzle  
32. Spray handle  
33. Trigger safety knob  
35. Data plate  
36. Inlet hose w. filter  
39  
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4.0 Application  
EN  
6.0 Accessories  
EN  
ALTO’s diesel powered high pressure washers  
can be used for all outdoor cleaning jobs for  
which steam, hot or cold water is used.  
Detergents can be used (see section 8.5)  
In order that you may make the most of your  
high pressure washer, ALTO has produced a  
very comprehensive accessory program,  
including a pneumatic tire kit especially for the  
CONTRACTOR DIESEL.  
Please feel free to contact your ALTO supplier  
for further information.  
4.1 Handling andTransport  
When handling the machine with a fork lift truck,  
be sure the forks extend completely under the  
machine to prevent tipping. When lifting the  
machine, a sling may be wrapped around the  
upper frame tubes for lifting. Ensure that  
personnel aren’t under or near the machine  
during lifting. When transporting the machine in  
a truck or trailer, be sure that it is secured  
against sliding or tipping.  
5.0 Standard equipment  
The machine is delivered with a double lance  
and a spray handle with high pressure steam-  
capable hose. The low pressure tube (pos. 30)  
is fitted with a flat jet nozzle 6530* and the high  
pressure tube (pos. 31) with a flat jet nozzle  
1506*.  
*) The first two digits of the nozzle number refer  
to the spray angle, in degrees. The last two  
digits indicate the water flow in l/min. at a pres-  
sure of 20 bar and a temperature of 20°C.  
The actual nozzle orifice size are 0.63” (1.6  
mm) for the nozzle 1506 and 0.142” (3.6 mm)  
for the nozzle 6530. NEVER replace the  
nozzles with those of a smaller size.  
Maximum working pressure and temperature  
rating are embossed on the ALTO hose. Use  
only ALTO high pressure, steam-capable  
hoses. In case of damage to your hose, DO  
NOT attempt to repair the hose yourself! The  
thrust (backwards turned force) on the nozzle  
is approximately 12.5 ft/Ib (55 N).  
Since the nozzles are mounted at an angle to  
the lance, there will be a torque effect at the  
handle when spraying. Always use two hands  
when operating the spray equipment.  
40  
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7.0 Functional description  
EN  
The water passes from the inlet connector (a)  
through a water filter (b) and into the high pres-  
sure pump (c). The high pressure water is  
passed through the regulating unloader  
(recycling valve) (d) and the first flow control  
(e) to the throttle valve (f) and through the  
second flow control (g) into the burner-coil (h).  
Here the water is heated to the required  
temperature. At the outlet of the burner-coil the  
hot high pressure water passes the tempera-  
ture sensor (i) and proceeds through the outlet  
connector (j) to the spray handle (k) and double  
spray lance (1.) The fuel is drawn from the fuel  
tank (m) through the fuel filter (n) by the fuel  
pump (a). The fuel pump passes the fuel  
through the magnetic solenoid valve (p) to the  
fuel nozzle (q) where it is ignited. The  
a
Inlet quick-connector  
Water filter  
High pressure pump  
Unloader/regulator (recycling valve)  
Flow switch  
Throttle valve  
Flow switch  
Burner coil  
b
c
d
e
f
g
h
i
Temperature sensor  
Outlet quick-connector  
Spray handle  
j
k
I
Double spray lance  
m Fuel tank ”Jerry-can”  
n
o
p
q
r
s
t
u
v
Burner fuel filter  
Fuel pump  
Magnetic solenoid valve  
Fuel nozzle  
Blower for burner  
Diesel engine  
Safety valve (internal)  
Pressure gauge  
Water volume adjustment  
combustion in the burner is monitored by the  
flame sensor (w) and is supplied with air from  
the fan (r), which together with the high pres-  
sure pump (c) are driven by the diesel engine  
(s).  
w Flame sensor  
41  
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Functional description EN  
7.4 Spray lance  
7.1 High pressure pump  
An unloader (recycling valve) and a safety  
valve are located on the pressure side of the  
high pressure pump. The unloader recirculates  
the water to the suction side of the pump when  
the spray handle is closed or if a nozzle is  
blocked. The safety valve is adjusted to approx.  
25 bar (360 psi) above the working pressure.  
The high pressure pump should not run idle for  
more than 5 min., since the water inside the  
pump gets hot while it is recirculating. The  
unloader ensures there is no pressure in the  
pump when the engine is stopped. The unloader  
and safety valve are adjusted and sealed at the  
factory. DO NOT attempt to change this  
adjustment.  
The double spray lance is fitted with 2 nozzles,  
a high pressure nozzle and a low pressure  
nozzle. When the pressure adjustment valve  
(pos. 27) is completely closed only the high  
pressure nozzle is used. Both the high pres-  
sure nozzle and the low pressure nozzle are  
used when the pressure adjustment valve is  
opened. Nozzles with smaller orifice size (0)  
than described in section 5.0 must not be  
mounted on the lance.  
7.2 Burner system  
The burner is controlled by electronic circuits  
which include a thermostat, flow switches to  
evaluate water flow and a sensor to monitor the  
flame. Water temperature is regulated by the  
thermostat. Flow switches ensure there is  
water flowing through the machine before  
allowing the burner to light. These devices are  
connected to a printed circuit board which  
activates a magnetic solenoid valve on the fuel  
pump to supply or stop fuel flow to the burner.  
There are two flow switches installed, for  
additional safety and protection of the burner  
coil. The circuit board ensures that they agree  
before allowing fuel to flow to the burner. The  
flame sensor is a separate circuit which stops  
the machine if there is no flame in the burner in  
hot water or steam mode.  
It is important for the life of the fuel pump, that  
the machine is not allowed to run in the hot  
water or cold water mode, with empty fuel tank.  
If the burner stops working unexpectedly,  
check the fuel level in the tank and refill it if  
necessary.  
7.3 Diesel engine  
A description and operating/maintenance  
instructions for the Ruggerini engine will be  
found in the Ruggerini manual provided with the  
CONTRACTOR DIESEL. Please read this  
before starting up. The throttle limit of the engine  
has been adjusted by ALTO, so that the max.  
number of revolutions corresponds to the max.  
pressure of the pump. The adjustment is  
sealed. This adjustment must not be changed.  
42  
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8.0 Connections  
EN  
8.1 High pressure Hose  
8.4 Suction Mode  
Connect the high pressure, steam-capable  
hose (pos. 24), to the outlet quick-coupling  
(pos. 10) on the machine front. Use only original  
ALTO high pressure, steam-capable hoses.  
The hose should not be exposed to abuse,  
such as knots, kinks, contact with sharp  
objects or external heat sources, as this may  
cause bursting. Only ALTO high pressure,  
steam-capable hose should be used for  
extension hoses. The extension hoses should  
not exceed a total maximum length of 300 ft  
(100 m).  
The machine is self priming, when used from a  
tank or stream, etc. The inlet hose must be filled  
with water before starting up. The self priming  
height depends on the water temperature. Max.  
self priming height of 5 m (17 ft) is reached with  
cold water (up to 8°C/47°F). Foreign material in  
the water supply can damage your machine. If  
there is a risk of foreign material in the water  
source entering the supply hose, a filter or filter  
must be mounted.  
8.5 Use of Detergents  
The machine is supplied as standard without  
detergent injection equipment. In self priming  
mode, detergents must not be added to the feed  
water (pos. 1), and thereby circulated through  
the pump. If your work requires detergents,  
they may be added through the optional  
external (downstream) injector available from  
your ALTO supplier.  
NOTE! Certain organic solvents are aggressive  
to rubber and plastics used in high pressure  
hoses and must therefore not be used. Using  
detergents outside the range from 4.0 - 10.0  
pH, will result in a loss of working life for your  
high pressure hose and seals in the spray  
handle, lances and other accessory. Follow  
precisely the directions printed on the packing  
when using detergents.  
8.2 Spray handle and lance  
Check the male connector (pos. 25) of the  
spray lance for foreign material. With one hand,  
grasp the quick coupler fitting (pos. 26) and pull  
it forward. Insert the male connector of the  
lance or accessory into the spray handle quick-  
coupler, and release the fitting. Pull the lance or  
accessory forward to ensure it is correctly and  
tightly installed, before operating the machine.  
NEVER release a lance or accessory while  
water or steam are coming from the nozzles of  
the lance or accessory.  
8.3 Water connection  
The water inlet connection is at the front of the  
machine, on the pump (pos. 1). Before  
connecting the water supply hose, it should be  
flushed to remove any impurities. The machine  
can be connected directly to a pressurized  
water supply or a tank. The inlet pressure must  
not exceed 15 bar (218 psi) and the water  
temperature must not exceed 35°C (95F°) .  
When the machine is connected to a water  
supply with back-flow-preventer the water  
supply hose must be at least 6 m (20 ft) in  
length. If there are impurities in the water  
source, it is advisable to provide additional  
filtration in the inlet line. Ask your ALTO  
representative about the filters and filters  
available for your CONTRACTOR.  
8.6 Fuel for burner  
Use ONLY ”heating oil”, kerosene or diesel fuel  
in the ”Jerry-can” fuel tank for the burner. DO  
NOT put gasoline in the burner fuel can!  
8.7 Fuel for engine  
Use only clean auto-diesel for the Ruggerini  
engine.  
43  
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9.0 Operating instructions  
EN  
d)Start the machine, if stopped, and activate the  
spray handle to start the burner.  
9.1 Start-up procedure  
1. Check that the pump oil level is between the  
MIN. and MAX. marks (pos. 2). Oil type:  
ALTO Pump Oil 100.  
IMPORTANT: For safety reasons it is important  
that instruction (a), above, always be followed!  
Note: If the engine stops immediately after  
having been started up, it should be checked  
whether the throttle control is set at idle speed.  
If it is, the throttle control should be adjusted to  
full speed.  
2. Check the oil level on the Ruggerini engine.  
Oil type: Choose oil type in accordance with  
the instructions in the Ruggerini manual.  
3. Run water through the inlet hose before  
connecting in order to remove possible  
impurities in the hose. Any water supply valve  
must be fully open in order to provide suffi-  
cient water supply.  
4. Open the small venting cap on the ”Jerry-  
can” if you intend to operate in hot water or  
steam mode.  
5. Turn the thermostat (pos. 16) to the blue field.  
6. Start the Ruggerini engine as described in the  
enclosed operating instructions. The key for  
the electric start has the following 3 positions:  
1 ”0” off  
9.4 Adjustment of pressure and  
water volume  
High pressure/volume  
In order to achieve maximum working pressure  
the pressure adjustment knob (pos. 27) on the  
lance should be turned all the way in (clockwise  
until completely closed) and the volume  
adjustment knob (pos. 22) situated on the front of  
the pump should be turned all the way out  
(counterclockwise). The water volume is infinitely  
variable up to the max. capacity of the machine.  
2 ”I” run  
3
the startkey will return to position 2  
Low pressure/volume  
when released.  
To reduce the working pressure, turn the pres-  
sure adjustment knob (pos. 27) on the lance,  
counterclockwise until the desired result is  
achieved. To reduce the water pressure AND  
volume, release the trigger (pos. 28) or stop the  
machine. Turn the volume adjustment knob on  
the front of the pump, clockwise, reducing water  
flow and volume. Test the results, and repeat  
the process until you have achieved the results  
you wish. By varying the settings of the pres-  
sure adjustment knob on the lance, and the  
volume adjustment knob on the pump, you may  
obtain pressures from 4 bar (60 psi) to 180 bar  
(2600 psi), and water flows from 6 l/min. (1.6  
US gpm) to 20.5 l/min. (5.4 US gpm).  
7. Turn the trigger safety knob (pos. 33) to  
position 0 and squeeze the trigger of the  
spray handle (pos. 28) allowing water to flow  
until the stream is steady.  
8. When the engine is warmed up, check that  
max. working pressure does NOT exceed  
the maximum allowable pump pressure. This  
can be taken from the pressure gauge and  
must not exceed 180 bar (2600 psi). Over-  
load will reduce the life of the machine. (See  
section 14.0).  
9.2 Cold water operation  
After the starting up procedure the machine is  
ready for cleaning with cold water.  
9.5 Shutdown  
9.3 Hot water/Steam operation  
Hot water:  
Adjust the thermostat (pos. 16) to the required  
temperature, 30-95°C (86-200°F).  
Steam:  
a)Adjust to temperatures above 95°C (200°F)  
ONLY with the trigger on spray handle  
released.  
b)Turn the water volume adjustment knob (pos.  
22) completely in (fully clockwise).  
c)Adjust the thermostat to the required  
temperature, 95-150°C (200-302°F).  
WARNING: Danger of burn  
Do not disconnect the high pressure hose until  
you have completed the following steps (risk of  
injury):  
1. Turn the thermostat (pos. 16) to the blue field.  
Spray cold water until the water temperature  
is under 50°C (122°F). Disconnect or turn off  
the water supply.  
2. Squeeze the trigger of the spray handle for a  
short time to empty the system of water.  
3. Stop the diesel engine. (See instructions for  
the Ruggerini engine).  
4. Disconnect the high pressure hose.  
44  
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10.0 Storage/frost proofing  
11.0 Model tag  
It is advisable to store the machine in a frost  
proof place between operations. If this is not  
possible the machine should be protected in the  
following way:  
1. Disconnect the inlet hose. Remove the lance  
(pos. 29) and empty it of water.  
This machine has the model name,  
”CONTRACTOR DIESEL”. The model designa-  
tion is printed on a decal positioned on the  
control panel and on the data plate. The data  
plate provides the following important  
information:  
2. Ensure that the thermostat is set in the blue  
field, and start the machine, allowing it to run  
with the spray handle opened until it is empty  
of water.  
1. Model designation  
2. Production code (year and week) 3. Serial  
number  
3. Place a suction hose in a bucket with 6-8 l  
(1.5-2 gallons) anti-freeze.  
4. Pump pressure  
5. Water volume  
4. Place the spray handle (without spray lance)  
above the bucket, open the spray handle so  
that the antifreeze can circulate. Open and  
close the spray handle a few times.  
5. Remove the suction hose from the bucket  
and allow the machine to pump all of the  
solution back into the anti-freeze container.  
The anti-freeze can be re-used, but keep in  
mind that it is slightly diluted with water each  
time this is done.  
6. Max pressure  
7. Max temperature  
8. Manufacturer  
Important:  
To avoid damage always ensure that the  
washer, the hoses and the spray lance are  
unfrozen before restarting. Place the washer  
and the accessories in a warm environment for  
some time before starting up.  
45  
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12.0 Maintenance  
12.1 Water inlet filter  
The inlet water connection (pos. 1) contains a  
filter to prevent impurities entering the high-  
pressure pump. This filter must be inspected at  
regular intervals, and cleaned as required. The  
filter can be removed after removing the quick  
coupling.  
EN  
2. ENGINE OIL CHANGE  
Refer to the Ruggerini engine manual for break-  
in and normal operating oil change  
requirements. Carry out first oil change after i0  
hours of operation and then every 100 hours.  
Not less than once every six months, however.  
NOTE: Protect the environment by properly  
disposing of used pump and engine oil.  
NOTE:  
To avoid serious damage to the rubber gasket,  
the quick coupling should be tightened only  
gently.  
12.4 Burner fuel filter  
To prevent foreign material from entering the  
fuel pump a filter (14) is fitted between the fuel  
tank and the fuel pump. This filter must be  
changed regularly, the frequency depends on  
the purity of the fuel. Replacement of the filter  
each year is recommended. See also diagnosis  
of faults and repair 16.0.  
12.2 Couplings/connectors  
To prevent leakage and damage to connectors/  
couplings on hoses, spray handle, machine and  
spray lance, these need to be cleaned  
occasionally and lightly lubricated with oil or  
grease.  
12.5 Descaling  
12.3 Oil Change  
After a period of operation depending on the  
hardness of the water, scale deposits will begin  
to accumulate in the heating coil. These  
deposits will reduce the effect of the water  
heating system and increase the fuel  
consumption. The machine should therefore be  
descaled regularly. If the machine adjusted on  
maximum water volume will not heat cold water  
(8°C/47°F) to 70°C (158°F) within three  
minutes, the burner or coil require servicing or  
descaling, as follows:  
The oil level must be checked at regular  
intervals (see section 9.1). The oil should be  
changed according to the following guidelines:  
1. OIL CHANGE FOR PUMP  
Change the oil after 1000 hours of operation, or  
when the oil appears ”milk-white”. Take off the  
cover of the oil glass (pos. 2). Unscrew the oil  
drain plug on the bottom of the pump (pos. 3).  
Drain the oil and then clean the dirt off the drain  
plug. Screw the plug in and top up the pump  
with fresh oil through the oil glass.  
The pump holds approximately 1 quart (1 litre)  
of zincless hydraulic oil. From ALTO the pump  
is filled with ALTO Pump Oil 100. When refilling  
and changing the oil this or a substitute with the  
following specifications may be used:  
Zincless Hydraulic Oil  
NOTE:  
Always carry out the descaling according to the  
instructions supplied with the descaling product:  
1. Disconnect the high pressure hose  
2. Place an inlet hose in a container of at least  
10 l (3 gallon) capacity, with a solution of  
recognized descaling product (i.e. ALTO  
STONEX), and water in the recommended  
percentage (not normally over 10% of the  
descaling product ratio 1:10). Ask your ALTO  
distributor for recommendations.  
ISO no. 100  
Viscosity Index (VI) min. 130  
Pour Point below -30°C  
SLUDGE CONTAINER  
3. Start the machine.  
It is normal for a small amount of oil and water  
to get past their seals. This oil/ water is  
collected in a sludge container (pos. 4). Empty  
the container before it has filled completely. This  
oil/water mixture must not be re-used in the  
pump.  
4. Switch off the machine when the water from  
the outlet fitting is colored by the scale rem-  
over.  
WARNING! The solution can be caustic. Note:  
Air must in no circumstances get into the sy-  
stem; therefore the container with scale rem-  
over must never be emptied completely.  
46  
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Maintenance EN  
13.0 Warranty  
EN  
5. Leave the machine for 20 minutes.  
ALTO Danmark A/S warrants against defects in  
the supplied product for a period of 12 months  
from the purchase date subject to the following  
conditions:  
- that defects are attributable to material or  
manufacturing flaws. (Items which require  
replacement due to normal wear and tear,  
abuse or misuse are not included in this  
limited warranty).  
6. Start the machine and pump the used solution  
into a container for proper disposal.  
7. Immediately connect a fresh water supply  
and turn it on.  
8. Start the machine, let it work for 5-10  
minutes, until all the scale remover is out of  
the system.  
9. If necessary, repeat the procedure from  
instructions 2 to 8.  
- Repairs required due to improperly performed  
service or repairs, are excluded.  
- Repairs required due to the use of non-ALTO  
parts or accessories, are excluded.  
- Repairs required by operation of the machine  
in a manner not prescribed in this Instruction  
Manual.  
The engine warranty is as described by, and in  
accordance with the practices and policies of  
Ruggerini Motor Company. See the Ruggerini  
documents for details.  
12.6 High pressure nozzle care  
An obstructed nozzle causes an increase in  
pump pressure. Immediate correction is  
required.  
1. Stop the machine and dismount the spray  
lance.  
2. Clear the nozzle obstruction with a ALTO  
nozzle tool No. 6401654.  
WARNING: This operation must be per-  
formed ONLY with the lance removed from  
the machine.  
3. Backflush the spray lance with water. Use  
the spray handle, pressing it towards the  
nozzle protection cap on the front of the  
spray lance.  
4. If the pressure is still too high, repeat items 1-  
3, or remove the nozzle from the lance for  
cleaning.  
47  
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14.0 Troubleshooting  
EN  
Fault  
Cause  
Repair  
The engine fails to start  
Insufficient diesel supply  
Battery run down  
Fuse blown  
Refill diesel tank.  
Recharge the battery*)  
Exchange fuse. See section 3.0.  
Let the pump thaw.  
The pump is frozen  
Working pressure too high  
Nozzle partly blocked  
Clean the nozzle. See section 12.6.  
Working pressure  
too low  
Valve for regulation of  
water volume is not  
adjusted to max pressure  
Nozzle worn  
Open fully the valve for regulation of  
water.  
Turn counterclockwise.  
Replace nozzle.  
Motor speed too low  
Contact ALTO service technician.  
Irregular working  
pressure  
Air in the pump  
Repeat the venting procedure.  
Inlet filter/filter blocked  
Insufficient water supply  
from the water works  
Clean the filter. See section 12.1.  
Change to a water supply with greater  
output. If this is not possible; turn the  
valve for regulation of the water volume  
clockwise, until the machine works smoothly.  
Read section on suction mode (8.4).  
In suction mode:  
Excessive suction head  
or excessively hot water  
Nozzle partly blocked  
Clean nozzle. See section 12.6.  
No working pressure  
Nozzle blocked  
No water  
Unloader (recycling valve)  
frozen  
Clean nozzle. See section 12.6.  
Check the water connection.  
Allow the machine to thaw.  
See section 10.0.  
High pressure hose/  
spray lance frozen  
Allow the high pressure hose/  
spray lance to thaw.  
The burner does not  
ignite  
Insufficient fuel supply  
Fuel filter blocked  
Refuel.  
Clean the filter. See section 12.4  
Should faults occur other than those mentioned above, please contact the nearest ALTO service  
organization *) IMPORTANT NOTE: To avoid damage to the electronic systems, the battery  
connecting cables must be removed when recharging the battery.  
15.0 Technical data  
EN  
Model  
CONTRACTOR DIESEL  
180/2610  
20,5/19 - 5.42/5  
35/95  
115/98.200  
(05) 15/65  
5/16.5  
Ruggerini MD 151  
12/16.3  
Pump pressure, max.  
Water volume at min/max pressure  
Max. temperature of inlet water  
Heating power  
Nozzle, spray angle  
Self-priming, max. lift  
Engine  
bar/psi  
l/min-USgpm  
°C/°F  
kW/Kcal  
degrees  
m/ft  
Rated effect  
kW/hp  
Start system  
Battery  
Electric start  
12/50  
V/Ah  
Diesel consumption, max. pressure  
Fuel consumption at 60°C/140°F )  
“Jerry-can”, capacity  
l/h-USgph  
l/h-USgph  
l/Usg  
3.0-0.79  
7.5-1.98  
20/5  
1
Sound power level (LWA) of the machine measured in accordance with ISO 3746: 112 dB(A).  
Sound pressure level (LPA) measured in accordance with ISO 11202 [DISTANCE 1m] [FULL LOAD]: 100 dB(A).  
1) Delta t= 52°C/126°F  
This machine has been manufactured in accordance with the EMC directive 89/336/EEC inclusive of subsequent  
amendments.  
Specifications are subject to alterations.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ALTO Danmark A/S  
Industrikvarteret  
DK-9560 Hadsund  
Tel.: +45 7218 2100  
6229952 (02.2003)  
Printed in Denmark  
Copyright © 2003 ALTO Danmark A/S  
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