meclean E Series User manual

SERIE-E
ELECTRICALLY HEATED
PRESSURE WASHER
Instrucon manual
WARNING: read the instrucons carefully before use

3
FIG. 1
FIG. 2
FIG. 3
12
11
17
2
1
1
8
3
13
14
16
4
15
9
6
5
4
6
5
8
7
10

4
FIG. 4
FIG. 5
FIG.
FIG. 7
FIG. 8
FIG. 9
FIG. 10
1
2
1
2

5
FIG. 11
FIG. 12
FIG. 13
FIG. 14
FIG. 15
FIG. 16
FIG. 17
FIG. 18
FIG. 19

6
FIG. 20
FIG 21
FIG. 22
FIG. 23
FIG. 24
FIG. 25
FIG. 25

7
FIG. 26
FIG. 27

21
Please read and comply with these
original instructions prior to the initial
operation of your appliance and store them for later
use or subsequent owners.
Check the contents of the pack before unpacking. In
case of transport damage or missing components
inform vendor immediately
❖Contents
❖General description
Main components
Fig.1
1.Protection cover
2.High pressure outlet
3.Brake
4.Water inlet
5. Detergent tank
6. High pressure hose
7.Trigger gun with handle
8. Hose reel 20mt
9.Technical data and serial nr
10.Plug 3P+T
11.Water filter
12. User manual
13.Screw
Fig.2
14.Descaling tank
15.High pressure pump
16.Safety valve
17. Water heater
18. Hour meter
Control panel (Fig.3)
1.Main switch 0-1
2. Hot water switch 0-1
3. Temperature regulator
4. Chemical regulator
5. Pressure regulator
6. Functioning lamps
7. Temperature display
8. Pressure gauge
❖Symbols used in the manual and on
the machine
Important
WARNING: pay attention for safety
WARNING: hot surfaces
WARNING: Electric shock hazard
High pressure jets can be dangerous if
subject to misuse. The jet must not be
directed at persons, animal, live electrical
equipment or the machine itself.
High pressure jets can be dangerous if
subject to misuse. The jet must not be
directed at persons, animal, live electrical
equipment or the machine itself
Use protective goggles
Use protective gloves
Use protective boots
Use protective clothes
Protect eyes
Operations that must be done by assistance
technicians.
❖General description
Page
21
❖Symbols used in the manual and on the
machine
Page
21
❖Proper use of the appliance
Page
22
❖
Safety instructions
Page
22
❖
Safety devices
Page
24
❖Use
Page
24
❖Care and maintenance
Page
26
❖Warranty
Page
27
❖Disposal and environmental protection
Page
27
❖Troubleshooting
Page
28
❖Technical specifications
Page
30
❖Declaration of Conformity
Page
31
❖Inspection sheet
Page
32

22
❖Proper use of the appliance
•The device can be used for washing surfaces in outdoor
environments, whenever it requires the use of high pressure
water with the addition of a suitable detergent to remove
dirt.
•The performance and ease of use of the device are suitable
for PROFESSIONAL use.
•With the appropriate optional accessories you can operate
sandblasting, weeding or other cleaning operations with
special brushes to apply to the gun.
Always use the device as described by the following
instructions.
Any other use is not considered to be finalized. For any
damage resulting from such use, the manufacturer
assumes no responsibility. Proper use also includes the
maintenance of the conditions of operation described by
the manufacturer such as maintenance and repair.
❖Safety instructions
General warnings
•The warning labels on the appliance provide important
informations for safe use.
•Always follow the safety instructions given in this manual
and also the existing rules on safety at work and accident
prevention.
•At the end of each work, always disconnect both electrical
and water connection.
•Keep packaging films out of the reach of children. Risk of
suffocation.
•Do not use the machine if the electric cable or important
parts are damaged: eg. safety devices, high pressure hose,
gun etc.
•This unit is designed to be used with the detergent provided
or prescribed by the manufacturer, shampoo detergent
based with biodegradable anionic surfactants. The use of
other detergents or chemicals may compromise the safety
of the device.
•Do not use the device in close proximity to people, except in
cases they wear protective clothing.
•Do not accept the presence of people or animals within a
radius of 5 meters.
•Always work with suitable clothing to protect against the
possible rebound of material removed by the jet of hot high
pressure washer.
•Do not touch the plug of the appliance with wet hands and
bare foot
•Do not touch the appliance with wet hands and bare foot
•Wear protective goggles and shoes with rubber soles.
•The jet lance shall not be directed towards mechanical parts
containing grease: otherwise it will be dissolved and
dispersed on the ground.
•Tires and air valves should be washed maintaining a
minimum distance of 30 cm. Otherwise these might be
damaged by the water jet in high pressure / temperature.
The first sign of such deterioration is given by the
discoloration of the tire. Pneumatic valves and air are
dangerous for life.
•WARNING: high pressure jets can be dangerous if used
improperly. Jets must not be directed towards people,
animals, to the electrical live equipment or at the
appliance itself.
•The hoses, accessories, fittings in pressure are important
for the safety of the device. Only use hoses, fittings and
couplings recommended by the manufacturer (it is
extremely important to preserve the integrity of these
components avoiding misuse and preventing them from
folds, bumps, abrasions).
•Appliances without TOTAL STOP system must not be
running more than 2 minutes with the triger gun released.
The water in by-pass mode can produce overheating and
damages to the pump.
•Turn off the appliance completely (switch OFF) whenever
it is left unattended.
•Each machine is tested in its conditions of use, it is normal
the presence of a few drops of water in it.
•Be careful not to damage the power cord. If the cord is
damaged it must be replaced by the manufacturer or
service, or by qualified personnel in order to avoid
dangerous situations.
•Machine with pressurized fluid. Hold the trigger gun firmly.
•Only use nozzle and accessories supplied with the
machine.
•This device is not intended for use by persons (including
children) with reduced physical or mental capabilities or
lack of experience and knowledge, unless they have had
instructions or supervision of the appliance by a person
responsible for their safety.
•Children should be supervised to ensure they do not play
with the appliance.
•Do not spray flammable liquids. Risk of explosion.
•Do not operate the unit until you have rolled out the high-
pressure hose.
•Wrap and carry the pressure hose taking care not to cause
the overturning of the unit.
•During winding and unwinding operations of the pressure
hose the machine must be turned off and the pressure
hose without pressure.
•To ensure the safety of the machine, use only original
spare parts from the manufacturer or approved by the
manufacturer.
•Do not direct the jet towards yourself or towards other
people to clean clothes or shoes.
•Do not allow the appliance to be used by children or
untrained personnel.
•The water that has passed through anti-reflux devices is
not considered potable.
•Disconnect the unit from the mains, unplugging it from the
electrical outlet before performing any maintenance and
cleaning.
•Extensions inadequate can be dangerous.

23
•If you use an extension cord, the plug and the socket must
be waterproof.
•It is absolutely forbidden to use the machine in a potentially
explosive or hazardous areas.
•Do not pull the power cord or the appliance itself to unplug
it from the outlet.
•If during operation the power supply fails, for safety
reasons, turn off the machine (OFF).
•If the technical data indicates a sound pressure exceeding 80
dB (A) wear protective goggles.
•If the item technical data has shown a hand-arm vibration
value greater than or equal to 2.5 mm2 make some stops
during use.
Electrical connection
•The electrical connection of the appliance must be done by
an electrician and conform to IEC 60346-1.
•Before connecting the appliance make sure that the data on
the label correspond to those of the mains and that the
socket is protected by a differential circuit breaker (RCCB),
with intervention sensitivity 0.03 A - 30ms.
•In cases of incompatibility between the socket and the
appliance plug, have the socket replaced with a suitable type
by a qualified professional.
•Do not use the device in case of temperature below 0 ° C, if
it is equipped with cable PVC (H VV-F).
•WARNING: Extension not adequate may be dangerous or
create situations of overload of the unit.
•The transitional insertion of the appliance may cause a
temporary decrease in voltage.
•To prevent damage to other equipment the line impedance
must be less than 0.15 Ohm.
•Ensure that the cable for connection to the network or the
extension cable is not damaged passing over, crushing them,
casting or the like. Protect the cable from heat and from
contact with oil or sharp edges.
•We recommend using a cable roll, which ensure that they
are taken at least 60mm above the floor.
•If you use an extension cord, the plug and the socket must
be waterproof and the cable must have the dimensions
shown in the table below.
LENGHT
SECTION
< 16 A
< 25 A
Max. 20 m
1,5 mm2
2,5 mm2
Da 20m a 50 m
2,5 mm2
4,0 mm2
Water connection
The appliance can be connected directly to the
mains drinking water supply only if in the supply
line is installed a back-flow prevention device
complying with current regulations.
The water that has passed through the back-flow
preventer device is considered non-potable.
Value pH
6,5….9,5
Electrical conductivity *
Electrical conductivity clean
water +1200 µS/cm
Sedimentable substances
**
< 0,5 mg/l
Filterable substances ***
< 50 mg/l
Hydrocarbons
< 20 mg/l
Chloride
< 300 mg/l
Sulphate
< 240 mg/l
Calcium
< 200 mg/l
Total Hardness
< 28 °dH
< 50 °TH
< 500 ppm (mg CaCO3/l)
Iron
< 0,5 mg/l
Manganese
< 0,05 mg/l
Copper
< 2 mg/l
Active chlorine
< 0,3 mg/l
* Maximum value 2000 µS/cm
** Sampling volumes 1 litre, sedimentation time 30
minutes
*** No abrasive substances

24
❖ Safety devices
The safety devices are used to protect the user for a safe
use of the machine and must not be deactivated or used
for purposes other tahn those indicated.
• Safety lock on trigger gun. It doesen’t lock during
operation under pressure but to prevent accidental
opening. Whenever you stop using the machine it is
important to activate the safety lock to prevent unwanted
access or accidental.
• Safety valve positioned on boiler input. It protects the
circuit from over-pressures that can damage internal
components of the machine. It recommends replacing it
(or restore) every 2 years from the date of commissioning
by qualified personnel.
• The motor thermal protection intervenes upon the
occurrence of an electrical or mechanical overload. In case
of intervention of the device, wait a few minutes or
alternatively disconnect and reconnect the device to the
network electricity. In case of recurrence of the problem,
contact an Authorized Service Center-
• Stop for lack of water. Protects from the occurrence of the
absence of pressure as a result after 3 attempts to start
the unit. It also protects the boiler from operating without
water pressure.
• Electronic system of protection from micro-leakage. It
spoke to the occurrence of losses along the circuit in
pressure downstream by-pass valve.
• Electronic anti-scale dosing system. Allows setting the
dosing of anti-scale liquid according to the hardness of the
water. In case of absence of anti-scale liquid, it stops hot
operation.
• Flow Switch. The device allows the safe operation of the
boiler interrupting operation in case of lack of water.
• Pressure damper. Riduzione delle vibrazioni trasmesse al
sistema mano braccio durante normale utilizzo.
❖ Use
Transport and handling
For transport in vehicles, always ensure the machine
so that it can not slip and fall over. Risk of injury and
damage. Observe the weight of the unit during
transport.
Installation
 Remove the carton box from the pallet and bring
down the machine following Fig.3. Before starting the
machine, check that there are no defects and that the
standard equipment is complete.
 Place the machine on a stable and horizontal surface
and activate the brake.. (FIG. 4)
Working with mains supply water (Fig.5)
Use only clean or filtered water. The tap of the
water intake and the supply mains must ensure a
flow equal to double the maximum flow of the pump.
(see SPECIFICATIONS). Minimum flow: 30 l / min.
Maximum temperature of the inlet water 40 ° C.
Maximum pressure of the incoming water: 1 MPa (10
bar).
 Connect the pressure washer the as close as possible
to the water supply system.
We recommend the use of a water supply hose
reinforced with the inner diameter of at least 1/2 “
(13mm)
With poor water quality (presence of sand) we
recommend the additional installation of a fine
filter. (Optional).
 Connect a supply hose (not supplied in standard
equipment) to the inlet for the water unit and to the
water supply.
 Open the tap.
Supply detergent
Use only cleaning fluids. Avoid acid or very
alkaline.
Be sure to read the specifications of the detergent
to be used, in particular the right dilution before
filling the tank
 Fill the detergent tank with the recommended
products suitable for the type of cleaning to be
carried out.

25
Supply descaling liquid
The dosing of the anti-limescale liquid inside the circuit is
activated only during hot machine operation and in case of
lack of anti-limescale liquid it switches off the hot operation.
Use protective gloves when filling the anti-scale
product canister.
Fill the anti-limescale canister as follows:
 Turn OFF the machine and open the cover.
 Fill the descaling tank with 1 liter of descaling product.
Only use descaler recommended by the
manufacturer.
The dosing of the product is automatic and the
setting must be done by qualified technicians.
Starting the machine
 Check that the main switch is in the OFF position (0)
 Connect the water supply hose to the quick coupling water
inlet of the unit.
 Connect the high pressure hose to the outlet of the pump
(OUTLET). The connection of high-pressure hose is pushed
to the end and then screwed by hand without the aid of
tools.
 Connect the high pressure hose to the gun using tool.
(Fig.6)
 Open the water supply tap completely
 Insert the lance to the spray - gun
 Insert the nozzle to the outlet of the lance by applying
Teflon and tightening with tool. (Fig.7).
 Put the plug in the socket.
For the first start or after a long period of inactivity
it is necessary to connect for a few minutes only the
suction pipe and the water and keep disconnected high
pressure hose and gun to let out from the discharge any
impurities deposited inside the circuit. In this way you avoid
clog the nozzle of the gun.
Use
Whenever you use the 'high-pressure cleaner is
recommended to hold the gun in the right position,
with one hand on the handle and the other on the lance.
Use individual protective equipment during normal
use
 To start the machine set the main switch to (I) and
pull the trigger of the gun.
 When stopping and leaving the gun, activate the
safety lever.
Washing with hot water
 Turn the switch for hot water to position 1
 Set the water temperature by turning the knob of
temperature regulation.
The boiler will start the instantaneous heating
of the water with the operating status
indicator light and indicating the water outlet
temperature on the display. The heating stops and
turns on again automatically during normal use.
TOTAL STOP SYSTEM (Standard) When the trigger gun
in relased the automatic pistol stops the pressure to
the nozzle and starts the water pump by-pass.
Automatically the heating stop burner is shut down
after programmable timing (Standard 20sec); the
reopening of the trigger gun makes the water pump to
restart pressure and the burner restarts automatically.
Pressure/flow rate regulation
 Adjust the operating pressure by turning the knob
clockwise to increase the pressure or
counterclockwise to decrease.
A decrease in pressure/flow allows higher
operating temperaturers of the water.
Washing with detergents in high pressure
High pressure detergent suction is carried out by
means of the water pump suction and only if the
appliance is equipped with a water filling tank with
float switch operation.
 The detergent is sucked in by opening and adjusting
the detergent regulator tap on the control panel.

26
Washing with detergents in low pressure (Optional)
The detergent suction in low pressure is done
through an ejector positioned downstream of the
by-pass valve and through the adjustable head
(Optional) positioned near the outlet nozzle.
The adjustable head allows you to select the low and
high pressure jet. The pressure selection is made by
rotating the adjustable head.
 Decrease the pressure at the nozzle by turning the knob
counterclockwise to aspirate detergent.
❖ Care and Maintenance
Correct maintenance and periodic checks keep the
appliance in a safe and efficient state, avoiding the
risk of inconvenience.
Risk of injury caused by unintentional operation
of the device and electric shock. Switch off the
device and pull out the power plug before
working on the device.
Perform the following operations before any
maintenance work:
 Set the appliance switch to OFF position
 Close the water supply.
 Switch unit for several seconds, and actuate the spray
gun until complete depressurization of the unit.
 Remove the water connection e and the power plug
from the socket.
 Lock the spray gun with the safety.
 Let the appliance to cool down.
Maintenance plan
Every week ( 50 h)
 Clean water filter
 Check pump oil
After first 100h and then every 500h
 Replace oil pump
Every 180-200 h
 Clean boiler
Every 2 years
 Replace safety valve
Maintenance operations
• Cleaning the water filter. In standard versions with tank
water filter is located inside the tank and connected to
suction hose. To remove the filter and clean use
compressed air. If too deteriorated replace it.
• Check and replace oil pump (Figure 12). Check the
transparent dome on the pump to see level. Unscrew the
cap with dipstick and check that the oil level is between
the MIN. and MAX. If the oil is milky (presence of water)
call for service. To replace oil use SAE 15W-40. Dispose of
used oil in an authorized areas.
• Clean boiler
• Frost protection. Do not leave the appliance exposed to
temperatures below 0 ° C. During periods of rest should
protect the local machine safe from frost or use antifreeze
commercial. Observe the regulations of the antifreeze
manufacturer .This also ensures some protection against
corrosion.
For all maintenance of the boiler, high pressure
pump and the machine it is necessary to contact a
professionally qualified or one of our Authorized Service
Center.
For any problems not mentioned in this manual or breakage
of the machine, please contact an Authorized Service Center
for its repair or for the replacement of original spare parts.
Spare parts
Use original spare parts to not
compromise efficiency and safety.

27
❖ Warranty
• All our machines are subjected to strict tests and are
covered against manufacturing defects in accordance with
applicable regulations (minimum 12 months). The
warranty is effective from the date of purchase. If your
machine or accessories are handed in for repair, a copy of
the receipt must be enclosed.
• Guarantee repairs are being made on the following
conditions:
- That defects are attributable to flaws or defects in
materials or workmanship.
- That the directions of this instruction manual have
been thoroughly observed.
- That repair has not been carried out or attempted
by other than authorized service staff.
- That only original accessories have been applied.
- That the product has not been exposed to abuse
such as knocks, bumps or frost.
- That only water without any impurities has been
used.
• The following are not included in the warranty:
- Parts subject to normal wear.
- The high-pressure tube and optional accessories.
- Accidental damage, caused by transport, neglect or
inadequate treatment, incorrect or improper use
and installation failing to comply with the
indications in the instruction manual.
- The warranty shall not cover any cleaning
operations to which the operative components may
be subjected. Repairs under this guarantee include
replacement of defective parts, exclusive of packing
and postage/carriage.
- The warranty shall not cover replacement of the
machine or extension of the guarantee resulting
from a breakdown.
- The manufacturer declines all responsibility
for damage to persons or property caused by bad
installation or incorrect use of the machine.
- The manufacturer is not responsible for any
economic losses as a result of the forced
immobilization of the device.
WARNING! Failures, such as clogged nozzles, valves and
mechanism blocked due to limestones, damaged pressure
cleaner accessories (like kinked high pressure hose) and/or
appliances normally working without any defects ARE NOT
COVERED BY THE WARRANTY.
❖ Disposal and environmental
protection
The packaging material can be recycled. Please
do not throw the packaging material into
household waste; please send it for recycling.
Do not release packing materials into the
environment.
Old appliances contain valuable materials
that can be recycled; these should be sent
for recycling. Batteries, oil, and similar
substances must not enter the environment.
Please dispose of your old appliances using
appropriate collection systems.
Please do not release engine oil, fuel oil, diesel
and petrol into the environment. Protect the
ground and dispose of used oil in an
environmentally-clean manner.

28
❖ Troubleshooting
In any situation of problem with the machine understand the reason by consulting the following table. Solve the
problem before resuming normal operation. All operations must be performed with the machine off , without
pressure and disconnected from the power cable plug.
In any situation of block of the machine due to micro lackages, lack of water, the thermal motor protection
intervention and flame failure (photocell) to restart is necessary to return the switch to 0 and wait at least a few
seconds to the next power.
Operations that must be done by assistance technicians
Problem
Cause
Repair
Turning the main switch
ON the machine does not
start
1)Plug not properly connected
2)Main supply fuses blown
3)Transformer fuse blown
1)Check power supply plug
2)Check fuse/replace
3)Check/replace
Electric motor hums but not
start
1) Lack of a phase (vers. Three Phase)
2) Low supply voltage
3) Pump blocked
1)Check power supply fuses
2)Check powe rsupply voltage
3)Check pump
The motor stops suddenly
or after a while
1)Low supply voltage
2)Motor Thermal protection
1)Check power supply
2)Overload/overheating
When the trigger gun is
open the pressure goes up
and down
1)Pressure nozzle dirt or worn
2)Coil or trigger gun dirt with limescale
1)Clean nozzle
2)Clean the coil from limescale
When the trigger gun is
close (by-pass pump ) the
pressure goes quickly up
and down
1)Micro-leaks in pressurized circuit
2)Unloader valve doesn’t work properly
3)Unloader valve dirt or worn
1)Check pressure hose connections. If problem
persists call Assistance.
2) 3) Check/clean unloader valve
Vibration at the trigger gun
and irregular flow
1)Pump valves dirty or worn
2)Unloader valve is dirt 1) 2) Check/replace
Pump runs properly but
doesn’t reach nominal value
1)Low power supply voltage
2)Air suction
3)Pump valve worn
4)Unloader valve worn or dirt
5)Pressure nozzle not correct or worn
6)Leaking from pressure seals
1)Check power supply voltage
2)Check suction hoses of the pump/tighteness
and check water filter
3) 4) Check/clean
5) Check/clean
5) Call Assistance
Lack of pressure
1)Dirt/worn pressure nozzle
2)Inlet/outlet pump valves dirt or worn
3)Unloader valve dirt or worn
4)Air suction
5)Water filter dirt
1)Check/clean or replace
2) 3) Check/ clean or replace
4)Check water pump suction connection
5)Clean water filter
Pump is too noisy
1)Air suction
2)Pump valves springs worn
3)Roll bearings worn (pump or motor)
4)Unloader /pressure fittings dirt or worn
5)Water temperature too hot
1) Check water pump suction connection
2) 3)replace valves/ roll bearings
4)Clean unloader valve and fittings (ejectors
etc.)
5)Verify inlet water temperature

29
Problem
Cause
Repair
Water inside oil pump
1)Pump oil seals worn
2Pump o-rings worn 1)2)Replace
water leakage from the
pump casing and the head
1) Seals worn.
2) Piston wear.
3) O.R. cap worn piston.
1) 2) 3)Check/replace
Oil leakage from the pump
casing and the head
1) Seals side crankcase
worn.
1)Replace.
Water not enough hot
1)Low heater efficency.
2)Water heaters with limescale 1)Clean boiler
2)Descaling procedure
Low detergent suction
1)Low detergent
1)Refill with detergent

30
❖ Technical specifications
(*) values according to EN 60335-2-79
ASTRA EL18
140.10
Electrical connection
Voltage
V
400
Type of current
Hz
3 ~ 50
Max connected load
kW (A)
22 (29,5)
Protection (Fuse)
A
32
Protection degree
--
IPX5
Protection class
--
I
Max. net impedance
Ohm
0.150
Water connection
Temperature inlet (Max.)
°C
40
Flow inlet (Min.)
l/min
20
Pressure inlet (Max.)
Bar
10
Performance
Flow rate
l/min
10
Working pressure standard nozzle 045
Bar
140
Overpressure max. (valvola sicurezza)
Bar
150
Heating power
kW
18
Working temperature max.
°C
90
Working temperature (water inlet 15°C)
10 lt/min
5 Lt/min
3Lt/min
°C
42
62
80
Chemical suction max
l/min
0.6
Motor pump
Hp/Rpm
4/1400
Max. recoil at trigger gun
N
16
Nozzles
--
035 - 045
Noise emission (*)
Sound pressure L
pA
dB (A)
79
Uncertainty KpA
dB (A)
3
Sound power LwA
+
Uncertainty KwA
dB (A)
85
Hand-arm vibration (*)
Hand spray gun
m/s2
1,9
Lance
m/s2
0.1
Uncertainty K
m/s2
0.3
Fuel and additional liquids
Descaling solution
L
1
Oil
L
1.8
Type of pump oil
--
SAE 15 W-40
Dimensions and weights
Lenght x Widht x Height
mm
1060x700x1020
Weight
kg
105
Typical working weight
kg
120
Detergent tank
L
20

32
❖ Inspection sheet
Regarding the control of the annual occupational safety (accident prevention) according to the guidelines
for liquid jet devices. This control module serves as a demonstration of proof of upgrading and should be
stored carefully.
Owner : ________________________
Address : ___________________________
Model: _______________________________
Year: ______________________
Serial number: _________________________________
- Instruction manual
- Protection cover
- Internal hoses
- Manometer
- Water tank float
- Trigger gun
- High pressure hose
- Safety valve (+ 10% / 20% working pressure):
- By-pass valve (regulation-working)
- Thermostat
- Pressure regulation valve
- Power cable (integrity)
- Power plug
- Protective earthing cable
- Main power switch ON/OFF
- Heater switch ON/OFF
- Functioning lamps/ alarm
- Flow switch functioning
- Working pressure check ............
- Outlet temperature check………..
- Trigger gun safety block
The appliance was checked by an expert according to the guidelines for liquid jet devices. Job security was
again assured after the elimination of defects by repair or replacement of damaged parts.
The next inspection of upgrading according to the guidelines for liquid jet devices must be done no later than
Month: __________ Year: ________
Place___________________ Date:___________________ Signature: _____________________