Why compromise
Classic 100.3
Classic 100.3 S
Classic 110.4
Classic 115.3
Classic 120.4
128331922
User Guide
Classic 100.3
Classic 100.3 S
Classic 110.4
Classic 115.3
Classic 120.4
Printed in China
Copyright © 2013 Gerni
Contents
1
2
3
4
5
6
7
8
9
10
Introduction ...................................................................................................................................................3
Safety precautions and working techniques .................................................................................................3
Before you start using your high pressure washer........................................................................................7
Operating your high pressure washer ...........................................................................................................8
After using the pressure washer ...................................................................................................................9
Maintenance ...............................................................................................................................................10
Troubleshooting...........................................................................................................................................10
Warranty Conditions ...................................................................................................................................11
Main technical Data ....................................................................................................................................12
Declaration of Conformity ...........................................................................................................................13
1 Introduction
1.1 Symbols used to mark instruction
All pictograms attached to the high pressure washer and its components are shown and explained in this manual.
Safety instructions marked with this symbol must be observed to prevent personal injury or
serious damage to property.

Caution where there is a risk of damaging the machine or its individual components.
This symbol indicates tips and instructions to simplify work and to ensure a safe operation of the
high pressure washer.
2 Safety precautions and working techniques
Before starting up your machine for the first time, this instruction manual must be read through
carefully. Save the instructions for later use.
WARNING !
• Inhalation of aerosols can be hazardous to health.
• Where applicable use a device in order to avoid or reduce aerosols production, e.g., a shield
covering the nozzle.
• For protection against aerosols use a respiratory mask of class FFP 2 or higher.
• The high water pressure generated by the machine and the power connection are particular
sources of danger.
• Do not let people who have not been trained in the use of a machine nor read the instruction
manual operate the machine.
• Minors should never be allowed to use the machine - except for young trainees over the age
of 16, when working under supervision.
• Before starting up your machine please check it carefully for any defects. If you find any, do
not start up your machine, contact your Gerni distributor. The insulation of the electric cable
should be faultless and without any cracks. If the electric cable is damaged, an authorized
Gerni distributor should replace it.
• The operator and anyone in the immediate vicinity of the site of cleaning should take action
to protect themselves from being struck by debris dislodged during operation.
• Always unplug the power plug before cleaning or maintenance and when replacing parts or
converting the machine to another function.
• Observe the national safety regulations issued, for example, by the employers liability
Original Instructions
3
insurance association, social security institutions, occupational safety and health authorities
or other organizations.
Accessories and spare parts
• To ensure the machine safety only use original spare parts from Gerni or approved by Gerni.
• High pressure hoses, fittings and couplings are important for the safety of the machine. Only
use hoses, fittings and couplings recommended by Gerni.

Physical, sensory or mental conditions
• The machine may only be operated by people who are in good physical health and in good
mental condition.
• If you have any condition that might be aggravated by strenuous work, check with your
doctor before operating the machine.
• Anyone who has consumed alcohol, medicines or drugs affecting their ability to react must not
operate the machine.
Applications
This machine has been developed for domestic use such as:
• Car, motorbike, boat, caravan, trailer, patio/drive/flagstones, woodwork, brickwork, barbecue, garden furniture, lawn mower.
Any other use is considered as improper use. Gerni accepts no liability for any damage
resulting from such use. The risk for such use is borne solely by the user. Proper use also
includes proper operation, servicing and repairs as specified in this instruction.
Clothing and equipment
Always take action to protect yourself when operating the machine.
• Wear shoes with non-slip soles.
• Wear goggles, ear protection and protective clothes during operation.

Transporting the high pressure washer
• When transporting the machine in or on a vehicle, it must be secured, e.g. with straps, so
that it cannot slip or tip over.
• Gerni recommends that the machine is positioned horizontally on the backside, when
transported in or on a vehicle.
Detergents
• This machine has been designed for use with cleaning agents supplied or recommended by
Gerni. The use of other cleaning agents or chemicals may adversely affect the function of
the machine.


Before starting the work
Inspecting the machine
• Do not use the machine if a supply cord or important parts of the machine are damaged,
e.g., safety device, high pressure hose, and spray handle and spray attachments.
• The trigger of the spray handle must move easily and automatically return to its starting
position when released.
• Always keep high pressure hose and spray attachment in good condition (clean, moving
easily) and correctly assembled.
Electrical connection
WARNING !
Minimize the risk for electrical shock:
• Voltage and frequency of the machine (see rating plate) must match the voltage of and
frequency of the mains supply.
• Only connect the machine to electrical installation made by a certified electrician and
comply with IEC 60364-1.
• It is recommended that the electrical supply to the machine should include a residual current device that will interrupt the supply if the leakage current to earth exceeds 30 mA for 30
ms.
• Inadequate extension cables can be dangerous. If an extension cable is used, it shall be
4
Original Instructions
suitable for outdoor use, and the connection has to be kept dry and off the ground.
• Gerni recommends use of an extension cable drum when cable extension is needed which
keeps the socket at least 60 mm above the ground.
• Cables on extension cable drums should always be completely unwound to prevent
overheating. Extension cables must comply with the below-mentioned requirements for
length and cable dimensions:
1.0 mm²
1.5 mm²
2.5 mm²
Max. 12.5 m
Max. 20.0 m
Max. 30.0 m
• If the electric cable is damaged, it must be replaced by an authorized Gerni distributor or
similar qualified person in order to avoid a hazard.
Water connection

• Connection of the machine to the drinking water mains according to national regulations.
• Operation by suction (e.g. a rainwater vessel) – see “Connecting to a pressureless water
supply”. The machine can be connected to water mains with a max. inlet pressure of 1
MPa/10 bars and max. 40°C.
• An ordinary ½" garden hose of min. 10 m and max. 25 m will be suitable for normal operation
at 3 bar inlet pressure.
IMPORTANT !
• Only use water without any impurities.
• If there is a risk of running sands in the inlet water (i.e. from your own well), an additional filter
should be mounted.
During work
WARNING !

• Never use the machine in an environment where there could be a danger of explosions. If
any doubt arises contact the local authorities.
• It is not allowed to clean asbestos-containing surfaces with high pressure.
• Never draw in fluids containing solvents (e.g., gasoline, heating oil, paint thinner or acetone) These substances damage the materials used in the machine. Their spray is highly
combustible, explosive and poisonous.
• Never direct the water jet at yourself, other persons, not even to clean clothing or footwear
- risk of injury.
• Never direct the water jet at pets or other animals.
• Never direct the water jet at live electrical equipment or the machine itself - danger of
short-circuiting.
• Hold the spray lance firmly with both hands. The spray lance is affected by a thrust of up to 16.4
N during operation.
• This high pressure washer machine must not be operated at temperatures below 0°C.
• Never start up a frozen machine. Frost damages are not covered by the guarantee!
• Always ensure firm and safe footing.
• Keep the machine as far away as possible from the object being cleaned.
• Always adjust the distance and thus the pressure of the nozzle to the surface, which is to be
cleaned to avoid any damage to the surface being cleaned.
• The machine shall be operated in an upright position.
• Do not cover the machine or use it in a room without adequate ventilation.
After finishing the work
WARNING !
• Always switch off the machine and unplug the power plug from the socket after work and
when leaving the machine unattended.
• Disconnect water inlet hose between machine and water supply.
• Wind up electrical cable and high pressure hose – to avoid damage of cable, plug, high
pressure hose and fittings.
Original Instructions
5
• Always empty pump, hose and accessories of water after use of the machine and prior to
storing.
Maintenance and repairs
WARNING !
• Always disconnect the electrical plug from the socket prior to maintenance, cleaning and
repair.
• Any repair should always be made in Gerni authorized workshop with original Gerni spare
parts.
• Do not attempt any maintenance not described in the instructions.
• If the machine refuses to start, stops, pulsates, pressure fluctuates, motor busses, fuse
blows or no water comes out, check the trouble shooting diagram in these instructions. In
case other problems occur, please contact your local Gerni distributor.
Recycling the high pressure washer
Make the old machine unusable immediately.
• Unplug the machine.
• Cut the electric cable.
Do not discard electrical appliances with household waste. As specified in European Directive 2002/96/EC on old electrical and electronic appliances, used electrical goods must be
collected separately and recycled ecologically. Contact your local authorities or your nearest
dealer for further information.
6
Original Instructions
3 Before you start using your high pressure washer
See the pictorial quick reference guide – unpacking.
Illustration shows the operation elements and how to prepare your machine for use.
A
Operation elements
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
Start/stop switch
Water inlet with filter (2a)
High pressure connection
High pressure hose
Electric cable
Click&Clean spray lance
Spray handle with lock (7a)
Click&Clean Tornado nozzle (Classic 100.3, Classic 110.4, Classic 115.3)
Click&Clean Tornado PR nozzle (C 120.4)
Click&Clean Powerspeed nozzle
Foam sprayer
Nozzle cleaning tool
Accessory storage
Model tag
Trolley handle
Holder for hose/electric cable (Classic 100.3 S, Classic 110.4, Classic 115.3, Classic 120.4)
Hexagon key for handle and bracket mounting
Wheel brackets
Wheels
Wheel caps
3.1 Mounting of trolley handle and wheels
Mounting of trolley handle
Only applicable for models with trolley handle (Classic 100.3 S, Classic 110.4, Classic 115.3,
Classic 120.4)
A1 Place the trolley handle (15) on the machine.
A2 Secure the handle by mounting the 2 screws using the enclosed hexagon key (17).
Mounting of wheel brackets
Only applicable for models with wheels (Classic 110.4, Classic 115.3, Classic 120.4)
A3 Place the wheel brackets (18) on the machine.
A4 Secure the wheel brackets by mounting the 2 screws, using the enclosed hexagon key.
A5 Place the wheels (19) on the wheel axle – push into position – you should hear a click
when the wheels are in correct position.
A6 Secure the wheels by mounting the wheel caps (20) – you should hear a click when the
wheel caps are in correct position and the wheel is secured.
3.2 Mounting of quick coupling
A7
A8

When mounting the quick coupling for the first time, check that the factory fitted filter (2a)
is positioned in the water inlet pipe.
Screw the quick coupling tight on to the water inlet (2).
IMPORTANT!
The inlet filter must always be fitted in the water inlet pipe to filter out sand, limestone and
other impurities as these will damage the pump valves. The filter is factory fitted.
Failure to fit the filter will invalidate the guarantee.
Original Instructions
7
4 Operating your high pressure washer
B
See the pictorial quick reference guide – operating your high pressure washer.
4.1 Connection of high pressure hose
Attach the high pressure hose (4) to the spray handle (7). Detach the high pressure hose
by pressing the button (A).
B2 Mount the high pressure hose on the outlet (3).
B1
4.2 Mounting of spray lance and Click&Clean nozzles
B3
Push the spray lance (6) into the spray handle, twist ans release.
NOTE!

The spray lance has a built-in low pressure nozzle that can be used for flushing away
dirt.
B4 When attaching the nozzles (8, 9, 10), press the nozzles into the spray lance.
IMPORTANT!
When attaching the click & Clean nozzles, the button on the side of the spray lance should
come out again. The nozzle should stay in position when pulling it.
B5 Push the foam sprayer (11) into the spray lance.
NOTE!

The foam sprayer features a swivel lock, which must be positioned in the hole in the Click &
Clean spray lance. Press the button to detach the Click & clean nozzles and the foam sprayer.
IMPORTANT!
Before starting the cleaning job, check that the machine is in an upright position and placed on
an even surface. Do not place the machine in long grass!
4.3 Water Connection

IMPORTANT!
Connecting to pressurized water supply
The inlet water max. pressure is 1 MPa/10 bar and the max. temperature is 40°C – see rating
plate. An ordinary ½" garden hose of min. 10 m and max. 25 m will be suitable.
B6
B7
Check that the filter is fitted in the water inlet pipe and that it is not clogged up.
Connect the water hose to the water supply by means of the quick connector. Turn on the
water.
Connection to the drinking water mains according to national and local regulations.
Let the water run through the water hose before connecting it to the machine to prevent sand
and dirt from penetrating the machine.
B8 Turn off the water and connect the water hose by means of the quick coupling to the water inlet.
Connecting to pressure less water supply
The machine can also operate in suction mode, meaning that you can connect the machine to
e.g. rainwater vessels, rivers, lakes and cisterns etc.
When connecting the machine to operate from pressure less water supplies – always use ad8
Original Instructions

ditional filtering to secure that impurities are not sucked in. Hose length should be max. 3 meter
and of minimum ½".
To meet these requirements, Gerni recommends that you use the original Gerni suction hose
kit.
The Machine is designed for suction up to 50 cm above the water surface.
• Position the machine at max. 0.5 meter above water surface. Detach the high pressure hose
from the outlet.
• Ensure that the inlet filter is in position and attach the suction hose kit, secure tight connection to the inlet.
• Turn on the machine, pressing the start/stop switch (1) into position "I".
• Wait until a steady jet exits the outlet.
• Switch off the machine and attach high pressure hose (4), spray handle, lance and nozzle.
• Start the machine again and activate the spray handle.
4.4 Starting the high pressure washer


IMPORTANT!
Connecting to mains power supply
The voltage and frequency of the machine (see model tag (14)) must match the voltage and
frequency of the power supply.
B9 Insert the power plug into power supply socket.
B10 Turn on the water.
B11 Release the trigger lock (7a). Remember to unplug, turn off the high pressure washer and
lock the trigger, when leaving the high pressure washer unattended
B12 Activate the trigger of the spray handle and let the water run until all air has escaped from
the water hose.
B13 Turn on the machine, pressing the start/stop switch into position “I”.
B14 Activate the trigger of the spray handle. When releasing the trigger of the spray handle,
the machine automatically stops. The machine will start again when you reactivate the
trigger of the spray handle.
5 After using the pressure washer
C
O
See the pictorial quick reference guide – storing the high pressure washer.
I

The high pressure washer should be stored in a frost free room! Should the machine by a mistake be frozen, it will be necessary to check it for damages.
5.1 Stopping the high pressure washer
C1
C2
C3
C4
C5
Original Instructions
Shut off the water supply and activate the trigger of the spray handle and let the machine
run until no more water runs out of the nozzle. This will wash out water hose, high pressure hose, spray lance and nozzles.
Stop the machine, pressing the start/stop switch into position “0”.
Unplug the machine from the power supply socket and wind up the electrical cable (5)
and place it on the holder (16).
Rinse the spray lance, nozzles and the foam sprayer after use.
Place spray handle, lance, nozzles, foam sprayer and other accessories in the holders on
the high pressure washer.
9
6 Maintenance
D
See the pictorial quick reference guide - maintenance.

To ensure a long and problem free working life of the high pressure washer, please take the
following advices:
•
•
•
•
•
Wash out water hose, high pressure hose, spray lance and accessory before mounting
Clean the connectors of dust and sand
Rinse the detergent bottle and the detergent nozzle
Clean the nozzle
Keep the water inlet filter clean and unclogged
Cleaning of the water inlet filter
D1 Clean the water inlet filter regularly once a month or more frequently according to use.
Carefully loosen the filter with a screwdriver and clean it. Check that it is intact before remounting it.
Cleaning of nozzle

A clogging up in the nozzle causes a pump pressure which is too high, why cleaning is required immediately.
IMPORTANT!
The nozzle cleaning tool (12) should only be used when the nozzle is detached and the machine is stopped!
D2 Stop the machine and disconnect the nozzle. Clean the nozzle.
D3 Flush the nozzle backwards with water.
Cleaning of machine vents
D4
The machine should be kept clean so as to let cooling air pass freely through the machine vents.
Greasing of O-rings
D5
To ensure an easy connection and that O-rings do not dry up the couplings should be
greased regularly.
7 Troubleshooting
To avoid unnecessary disappointments, you should check the following before contacting the Gerni service
organization.
Symptom
Cause
Machine refuses to
start
Machine not plugged in
Defective socket
Fuse has blown
Defective extension cable
Plug in machine
Try another socket.
Replace fuse. Switch off other machines.
Try without the extension cable.
Fluctuating pressure
Pump sucking air
Check that hoses and connections are airtight.
Contact tour local Gerni Service centre.
Clean and replace or refer to local Gerni
distributor.
Valves dirty, worn out or stuck
Pump seals worn out
10
Recommended action
Original Instructions
Symptom
Machine stops
Cause
Fuse has blown
Incorrect mains voltage
Thermal sensor activated
Nozzle partially blocked
Recommended action
Replace fuse. Switch off other machines.
Check that the mains voltage corresponds
to specification on the model tag.
Leave the washer for 5 minutes to cool
down.
Clean the nozzle (see section 6.2)
Fuse blows
Fuse too small
Change to an installation higher than the
amp. consumption of the machine.
You may try without the extension cable.
Machine pulsating
Air in inlet hose/pump
Nozzle partially blocked
Water filter blocked
Hose kinked
Allow machine to run with open trigger until
regular working pressure resumes.
Check that the water supply corresponds to
specifications required (see model tag)
NB! Avoid using long, thin hoses (min. 1/2")
Clean the nozzle (see section 6.2)
Clean the filter (see section 6.1)
Straighten out hose.
Machine often starts
and stops by itself
Pump/spray handle is leaking
Contact your nearest Gerni Service Centre.
Machine starts, but no
water comes out
Pump/hoses or accessory
frozen
No water supply
Water filter blocked
Nozzle blocked
Wait for pump/hoses or accessory to thaw.
Inadequate supply of mains
water
Connect inlet water.
Clean the filter (see section 6.1)
Clean the nozzle (see section 6.2)
In case problems other than the above occur, please phone 1300 733 171 or check our website www.gerni.
com.au for your nearest service agent.
8 Warranty Conditions
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are
entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be
of acceptable quality and the failure does not amount to a major failure.
Gerni high-pressure washers for domestic use are warranted for 2 years from the date of purchase by:
AUSTRALIA:
Nilfisk-Advance Pty LTd
Unit 1/13 Bessemer Street
Blacktown NSW 2148
Phone: 1300 556 710
E-mail: sales@gerni.com.au
NEW ZEALAND:
Accent Tools Ltd
232 Bush Rd
Albany
Auckland 0632
Phone: 09 968 2610
E-mail: sales@accent-tools.co.nz
Equipment defects covered by this warranty will be repaired or replaced by one of the service centres of the
Gerni organisation. Find your local service agent here:
http://www.gerni.com.au/.
If your high pressure washer or accessories are handed in for repair, it must be followed by a description/
specification of the fault, and the original purchase receipt, or a copy, must be enclosed.
Packing and postage/carriage is not covered by the warranty.
Original Instructions
11
The benefits under this warranty are in addition to your national law of sale.
Guarantee repairs are made on the following conditions:
 that defects are attributable to flaws or defects in materials or workmanship. (wear and tear
as well as misuse are not covered by the guarantee).
 that the directions of this instruction manual have been thoroughly observed.
 that repair has not been carried out or attempted by other than Gerni-trained 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.
 that the high pressure washer has not been used for rental nor used commercially in any
other way.
Repairs not covered by the guarantee conditions will be invoiced. (i.e. malfunctions due to Causes
mentioned in section Trouble Shooting of the instruction manual).
Please phone 1300 733 171 (Australia) or 09 9682610 (NZ) for service or warranty assistance only
after checking possible causes in the trouble shooting chart on page 13.
9 Main technical Data
Classic
100.3
Classic
110.4
Classic
115.3
Classic
120.4
V
Hz
kW
A
Class I/
Class II
IP xx
220-240
50/60
1.3
5.7
220-240
50/60
1.4
6.1
220-240
50/60
1.4
6.1
220-240
50/60
1.4
6.1
Class II
Class II
Class II
Class II
IPX5
IPX5
IPX5
IPX5
MPa/bar
MPa/bar
l/min/l/h
l/min/l/h
Mpa/bar
°C
°C
7/70
10/100
5.3/320
7.3/440
1/10
40
20
7.5/75
11/110
5.2/310
7.3/440
1/10
40
20
8/80
11.5/115
5.2/310
7.3/440
1/10
40
20
8.5/85
12/120
5.2/310
7.3/440
1/10
40
20
5.1 (6.1)*
5.5
6.1
6.7
< 2.5 ±1
< 2.5 ±1
< 2.5 ±1
< 2.5 ±1
74 ±3
74 ±3
74 ±3
74 ±3
90
90
90
90
Type
Electric specifications
Rated voltage
Rated frequency
Rated power consumption
Current
Protection class
Protection degree
Hydraulic specifications
Rated pressure
Max. pressure
Rated water flow
Max. water flow
Max. water inlet pressure
Max. water inlet temperature
Max. water inlet temp. suction mode
Weight
kg
Hand-arm vibration according to ISO
5349-1:
m/s2
Standard nozzle
Sound pressure level LpA in accordance
dB(A)
with ISO 3744
Guaranteed sound power level LWA in
dB(A)
accordance with 2000/14/EC
We reserve the right to make alterations.
* C 100.3 S
12
Original Instructions
10 Declaration of Conformity
Declaration of Conformity
Product:
High Pressure Washer
Type:
Gerni Classic 100.3 / Classic 100.3 S, Clasic 110.4, Classic 115.3 /
Classic 120.4 and accessory variants of above-mentioned types
The design of the unit corresponds to the following
pertinent regulations:
EC Machine Directive
EC Low-voltage Directive
EC EMC Directive
RoHS Directive
Applied harmonised standards:
EN 60335-2-79
Applied international standards and technical
specifications:
IEC 60335-2-79
Name and address of the person authorised to compile
the technical file:
Anton Sørensen
General Manager, Technical Operations EAPC
2006/42/EC
2006/95/EC
2004/108/EC
2011/65/EU
Gerni-Advance A/S
Sognevej 25
DK-2605 Brøndby
Identity and signature of the person empowered to draw
up the declaration on behalf of the manufacturer:
Anton Sørensen
General Manager, Technical Operations EAPC
Gerni-Advance A/S
Sognevej 25
DK-2605 Brøndby
Place and date of the declaration
Original Instructions
Hadsund, April 15, 2013
13
Classic 115.3
Classic 120.4
O
I
Classic 100.3
14
3
2
2a
Classic 100.3 S
Classic 110.4
18
20
19
A1
A2
A3
A4
A5
A6
A7
A8
B1
B2
B6
B7
B10
Max. 40°C
B3
B4
B5
Max. 40°C
B11
B12
O
B8
B9
B13
B14
I
C1
C1
C2
C3
C3
C4
C5
C5
D1
D5
D2
D3
D4
AUSTRALIA:
NEW ZEALAND:
Nilfisk-Advance Pty Ltd
Unit 1/13 Bessemer Street
Blacktown NSW 2148
Accent Tools Ltd
232 Bush Rd
Albany
Auckland 0632
Phone: 1300 556 710
E-mail: sales@gerni.com.au
Phone: 09 968 2610
E-mail: sales@accent-tools.co.nz