Makita HW120 User manual

INSTRUCTION MANUAL
Hot power
washer
HW120
WARNING: For your personal safety, READ and UNDERSTAND before using.
SAVE THESE INSTRUCTIONS FOR FURTHER REFERENCE
ENGLISH
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Contents
1. Technical data
2. General outline
3. Machine identification
4. Main parts
5. Safety instructions
6. Machine installation
7. Machine start up
8. Standard equipment
9. Options
10. Detergents
11. Single phase electrical diagram
12. Labels
13. Maintenance
14. Inner coil cleaning
15. EC Declaration of conformity
16. Causes and solutions
17. WEEE statement
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1. Technical data
MACHINE SPECIFICATION
Working Pressure 110 bar
Max Pressure 120 bar
Flow rate 510 l/hr
Max temperature 90ºC
Motor type Induction
Pump Triplex/ceramic coated pistons
Fuel type Diesel
Fuel tank capacity 8 Litres
Input wattage 2.2 kw
Volt age/Frequecy 230V/50 Hz
Motor insulation F class
Motor protection IPX5
Repulsive force of the gun to the max pressure 9.9 N
Unit vibrations 2.64 M/s2
Max water input pressure 12 bar
Net weight 78.7 kg
MACHINE DIMENSIONS
540mm 800mm
750mm
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2. General outline
3. Machine identification
The machine is exclusively meant for washing and cleaning with hot or
cold water surfaces apt to being treated with mechanical high pressure jet
system and subject to eventual chemical action of detergents. Before
using the cleaner, make sure that the identification plate is fixed on the
machine; if the plate is missing, please don’t use the machine and contact
immediately your dealer. Don’t leave the machine unattended in your work
environment. After the daily use, it is recommended to keep the cleaner in
a dry place protected from bad weather conditions.
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4. Main parts
1. Lance
2. High pressure hose
3. Feeding cable
4. Detergent suction
5. Detergent filter
6. Fuel tank
7. By-pass valve
8. High pressure pump
9. Electrical motor
10. Fuel pump
11. Burner motor
12. Boiler
13. Combustion head
14. Pressure switch
15. Electrical panel
16. ON/OFF switch
17. Thermostat
18. Pressure gauge
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5. Safety instructions
Make sure that the machine is constantly supplied with water.
Dry working would cause serious damages to the cleaner seal system.
• Electrical connections must be carried out by skilled/trained
personnel only.
• Never pull the power cord to disconnect the plug nor pull the hose
to move the machine.
• Don’t leave the machine in low temperature and protect it from frost
and general bad weather conditions.
• Avoid vehicles transit on the high pressure hose.
• While the machine is running do not cover it and avoid placing it where
there’s low air supply.
• If you are working indoors, it’s compulsory to install a fan to discharge
the exhaust gases outside.
• The fan terminal must not be obstructed. Don’t leave the lance or any
other object near the exhaust outlet.
• The nature of the gases as well as the high temperature are to be
considered very dangerous, the operator must thus be adequately
informed in order to avoid being scalded.
• Don’t leave the machine outside when it rains or when the weather
conditions are bad.
• The operators must wear protection clothes while using the machine.
• Don’t use the machine under the rain or in case of storms.
• Do not leave the machine for more than 5 minutes working with the gun
closed, the water temperature would increase rapidly causing serious
damages to the seal system.
• Each time the cleaner has to be switched off blow off the hose residual
pressure by using the gun.
• Do not use fuels different from the ones suggested by the manufacturer.
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5. Safety instructions
• Don’t carry out any operation on the machine before unplugging it.
• Don’t carry out any unwary operation on the electric cable and make
sure the same is not damaged.
• Never direct the high pressure water jet towards people, animals,
electrical installations or the machine itself.
• Use always only clean water. Dirty water and chemical corrosive
products are harmful for the machine.
• When using an extension make sure the plugs have an IP65 type
protection and that the cable is according to the table mentioned
here under:
EXTENSION LENGTH CABLE SECTION mm2
Up to 20 mt 2.5
From 20 mt to 50 mt 4
WARNING!
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The cleaner you are about to use will operate at it’s best if all instructions
are duly followed. Before turning on the machine, make sure it is perfectly
horizontal on a firm level surface.
Connect the high pressure hose A,
to the gun B, and with the other side
of the hose to the intake fitting, fixing
tightly the fastening nut C(Fig. 1).
Connect the water supply hose E, to
the infeed fitting F. It is recommended
to use a reinforced hose having an
inner diameter of at least 10mm.The
water intake must be at a pressure of
1 bar minimum and have a max inlet
temperature of 60°C. (fig. 2)
Fill the fuel tank G, with fuel (diesel)
(fig. 3)
6. Machine installation
C
A
B
F
E
G
(fig. 1)
(fig. 2)
(fig. 3)
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After having installed the machine it can be turned on the water supply.
Push the start button Iand open the lever Lof the gun for a few seconds
in order to eliminate the air inside the hose. When starting the machine
for the first time it’s necessary to operate it without the nozzle in order
to permit the outlet of dirt and air from the pump, afterwards replace
the nozzle.
The use of water is obtained pressing the start switch I, the pump starts
working then press the lever of the gun L. Hot water is obtained by
pressing the switch I, then adjusting to the approprate temperature
required on the thermostat M, press the gun’s lever L and the burner will
turn on producing hot water at the desired temperature.
Once having operated the machine with hot water and before turning it off,
let it run with cold water for a couple of minutes. The pressure is adjusted
by the manufacturer at 120 Bar and must not be changed for any reason.
The detergent is applied by introducing filter Oof the detergent into a
suitable container P, by
adjusting the knob R, the
amount of detergent is
controlled through the lance.
At the end of the working
day, switch off the machine
and turn the water supply
off. Press the lever on the
gun to remove the residual
pressure from the hose.
Before turning the
machine off always run with
cold water for a few minutes.
7. Machine start up
P
O
L
M
I
R
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8. Standard equipment
We suggest to check the cleaner when it is delivered.
It must be complete in all the parts and be supplied with:
• 1 x Thermal lance
• 1 x 8 mt high pressure hose
• 1 x Nozzle
9. Options
EXTENSION PIPE
Used to extend the lance for
a longer reach.
ROTATING NOZZLE
Permits to remove the
hardest dirt from surfaces.
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