MH 5M
Operating
instructions
psi
bar
107140462 E (09.2015)
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1 Symbols used to mark instructions
WARNING & Safety instructions in these operating instructions which must be observed to prevent risks to persons are marked with this danger symbol.
Before starting up your high- pressure washer for the first time, this safety instruction
must be read through carefully. Save the instructions for later use.
This symbol marks safety instructions related to connection of the machine to water
mains.
2 Safety instructions. For your own safety
WARNING The high pressure washer may only be used by persons instructed in its use
and who have been expressly authorised to do so • This appliance is not intended for use by
persons with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance
by a person responsible for their safety • Machines shall not be used or maintained by children.
•
Children should be supervised to ensure
they do not play with the appliance • Use of this machine is subject to the applicable local safety regulations and proper use. Please refer to Operating Instructions for recommended use, maintenance and problem solving • Never spray electrical equipment with water: danger for persons, risk of short-circuiting.
3 Before starting the cleaner DO READ OPERATING INSTRUCTIONS BEFORE USE!
Before use, check that the machine is safe and in proper condition and in upright position on a plain and stable ground to ensure stability. Regularly check whether the power cord is
damaged or shows signs of ageing.
WARNING Do not use the machine if a supply cord or important parts of the machine are
damaged, e.g. safety devices, high pressure hoses , spray handle or lance • Check the rated
voltage of the machine before connecting it to the mains power supply. Ensure that the voltage
shown on the rating plate corresponds to the voltage of the local mains power supply.
NOTE: If your 3-phase cleaner was supplied without a plug, have it fitted with a suitable
3-phase plug with earth conductor.
WARNING related to combustion engine powered machines Do not use combustion
engine powered machines indoors unless adequate ventilation is assessed by national labour
authorities • Ensure that any exhaust emissions are not in the vicinity of air intakes • Incorrect
fuels shall not be used as they may prove hazardous.
WARNING Before use of water jet, assure that the high pressure hose with the spray handle is safely connected by an audible click to the lance • High-pressure water jets can be dangerous if misused. The jet must not be directed at persons, animals, live electrical equipment or
the cleaner itself • Do not direct the jet towards yourself or towards other persons in order to
clean clothes or footwear • Do not use the cleaner when other people without appropriate protective clothing are in the working area. Wear appropriate protective clothing, safety gloves,
boots, hearing aids and helmets with visor and eye protection • When operating the spray hanOriginal instruction
3
dle, kickback forces are produced at the spraying device and when the spray lance is held at an
angle, a torque is also created. The spray handle and spray lance must therefore be held firmly
with both hands • Check that cleaning will not result in dangerous substances (e.g. asbestos,
oil) being washed off the object to be cleaned and harming the environment • During use of
high pressure cleaners, aerosols may be formed. Inhalation of aerosols can be hazardous to
health. The employer shall perform a risk assessment in order to specify the necessary protective measures regarding aerosols, depending on the surface to be cleaned and its environment.
Respiratory masks of class FFP 2, an equivalent or higher are suitable for the protection
against hydrous aerosols • This machine has been designed for use with the cleaning agent
supplied or recommended by the manufacturer. The use of other cleaning agents or chemicals
may adversely affect the safety of the machine • Risk of explosion – Do not spray flammable
liquids. Do not clean delicate parts made of rubber, fabric, etc. with the jet nozzle. Keep some
distance between the jet nozzle and surface in order to prevent the surface from damage.
4 Transport
For safe transport in and on vehicles we recommend to prevent the equipment from sliding and
tilting by fixing it with belts. For transport and storage at temperatures around or below 0°C,
anti-freeze should be drawn into the pump beforehand (Please refer to Operating Instructions).
5 Water connection
This machine is only allowed to be connected with the potable water mains, when an appropriate backflow preventer has been installed, Type BA, according to EN 60335-2-79. The
backflow preventer can be ordered under number 106411177,106411178,106411179,106411184.
The length of the hose between the backflow preventer and the machine must be at least 12
meters (min diameter 3/4 inch) to absorb possible pressure peaks. Operation by suction (for
example from a rainwater vessel) is carried out without backflow preventer. The suction set can
be ordered under number 61256.
WARNING Water that has flowed through backflow preventer and high pressure washer is
considered to be non-potable.
6 Electrical connection
The electric supply connection shall be made by a qualified electrician and comply with IEC
60364-1. It is recommended that the electric supply to this machine should include either a residual current device that will interrupt the supply if the leakage current to earth exceeds 30 mA
for 30 ms or a device that will prove the earth circuit. Switching on the cleaner may cause voltage fluctuations. Voltage fluctuations should not occur if the impedance at the transfer point is
less than 0.15 Ohm. If in doubt ask your local electricity supplier.
WARNING Inadequate extension cords can be dangerous. If an extension cord is used, it
shall be suitable for outdoor use, and the connection plug has to be kept dry and off the ground.
It is recommended that this is accomplished by means of a cord reel, which keep the socket at
least 60mm above the ground. Always unwind cord from the reels completely to prevent the
power cord overheating • Disconnect the power cord from the power source by pulling the plug
only (do not pull or tug the power cord).
7 Safety devices
Thermal sensor: A thermal sensor protects the motor against overloading. The machine will
4
Original instruction
restart after a few minutes when the thermal sensor has cooled. Unloader valve: Unacceptably
high pressure is fed back without residual pressure via a bypass line into the intake line of the
pump when the safety device is tripped. The unloader valve is set and sealed at the factory and
must not be adjusted. Locking device on spray handle: The spray handle features a locking device. When the pawl is activated, the spray handle cannot be operated.
8 Maintenance and repair
WARNING Always switch off the mains disconnecting switch when leaving the machine
unattended • Always remove the plug from the mains plug socket before carrying out maintenance work or cleaning of the machine.
Carry out only the maintenance operations described in the operating instructions. To ensure
machine safety: use only original Gerni spare parts. Do not make any technical modifications
to the high-pressure cleaner. Ensure that the machine is regularly serviced by authorized Gerni
dealers in accordance with the maintenance plan. Failure to do so will invalidate the warranty.
CAUTION High-pressure hoses, fittings and couplings are important for the safety of the cleaner. Use only high-pressure spare parts approved by Gerni! • If the supply cord is damaged it
•
must be replaced by the manufacturer,
its service agent or similarly qualified persons to
prevent hazards.
Original instruction
5
Symbols used to mark
instructions
Safety instructions in these operating instructions which must
be observed to
prevent risks to
persons are marked with this
danger symbol.
This indicates tips and
instructions to
simplify work
and to ensure safe operation.
This symbol is
used to mark safety instructions that
must be observed
to prevent damage
to the machine and
its performance.
Operations marked
with this symbol
should only be
carried out by
Gerni Service
Technicians.
This high-pressure cleaner has
been designed for professional
use. It can be used for cleaning
agricultural and construction
equipment, stables, vehicles,
rusty surfaces, etc.
Chapter 5 describes the use of
the high-pressure cleaner for
various cleaning jobs.
Before using the
high-pressure
cleaner, be sure to
also read the enclosed operating instructions and keep
them within reach at all times.
2 Description
2.1
Purpose
The cleaner has not been approved for cleaning surfaces
which comes into contact with
food.
6
Always use the cleaner as described in these operating instructions. Any other use may
damage the cleaner or the surface to be cleaned or may result
in severe injury to persons.
1)
Options / model variants
Original instructions
2.2
Operating elements
See page 2 in this operating
instructions.
1
2
3
4
5
6
7
8
9
10
11
12
13 Display (Temperature or
Codes)
14 Temperature control
Spray lance
15 Low fuel indicator
Spray lance storage
16 Low Gerni AntiStone (AntiControl panel
Scale) indicator
Crank handle for
17 Service interval due/expired
High pressure hose reel
18 Pump oil low
(MH 5M ..X)1)
19 Detergent metering knob
Cord reel (MH 5M ..X2)1)
20 Pressure gauge
Fuel level gauge
21 Power ON
Tank filler for fuel
22 Castor with parking brake
Receptacle for service
23 Water supply connection
crane and lifting ring1)
24 Tank filler for anti-freeze
Top cover release
25 Tank filler for Gerni AntiService door release
Scale
Crank handle for
26 Canister for detergent B1)
High pressure hose reel
27 High pressure hose reel
(MH 5M ..X2)1)
(MH 5M ..X)1)
High pressure hose connec- 28 Power cord reel
tion for machines without
(MH 5M ..X2)1)
hose reel
29 Tank filler for detergent A
Main switch ON/OFF - cold
30 Grip for top cover
water/hot water
3 Before starting the cleaner
3.1
Transport and assembly
chine by hand from the pallet.
Due to the weight this work
should be done by at least
three persons.
CAUTION!
Do not hold the plastic tank to lift
the machine as it could become
detached from the frame.
The best places to hold the machine are
– on the handle
– on the frame between the front
wheels and the guide rollers.
1. The safest way to lift the machine is to use a fork-lift truck
The arrows in the illustration
indicate the best places to position the fork.
2. It is also possible to lift the ma3.2
1)
Every fuel-burning appliance, such
as pressure washers, depends
upon a proper mix of fuel and air
(by weight) for proper combustion.
Therefore some adjustment of the
air supply to the burner may be necessary to take account of altitude
and the resulting air pressure. This
is true whether your fuel is ‘Natural
gas’, Propane or Diesel.
Your Gerni hot water pressure
washer was thoroughly tested and
adjusted for optimum performance
before it left our factory. The factory
is located at approximately 120m
(390 ft) above sea level, and the
combustion settings are optimal for
that elevation.
If your location is higher than
1200m (3900 ft) above sea level,
your burner may require readjustment for proper performance and best fuel economy.
Contact your Dealer or Gerni for
assistance.
Set the brake
1. Before using the cleaner for
the first time, check it carefully for any faults or damage.
2. Run the machine only when
it is in perfect working condition.
3. Set the brake.
4. The slope on which the high
pressure cleaner is placed
must not exceed more than
100 in any direction.
Options / model variants
7
Original instructions
3.3
Install Crank handle
for high pressure hose
reel/cord reel
1. Pull cap of crank in arrow
direction.
2. Align tabs on crank with slot
in axle.
3. Put crank on axle of high pressure hose reel/cord reel.
4. Fix crank by pushing the
cap.
3.4
Fill up detergent tanks
1. Fill up detergent tanks (A) and
(B) with prediluted detergent.
Capacity see chapter 9.4
Technical Data
A
3.5
Fill up tank for Gerni
AntiStone (Anti-Scale)
3.6
Antiscale
B
1. Fill up Gerni Anti-Stone (AntiScale)/water softener reservoir with the sample bottle
provided. Gerni AntiStone
(Anti-Scale) prevents any
deposits of scale and acts at
the same time as a corrosion
inhibitor.
For compatibility reasons, use
only the tested Gerni AntiStone
(Anti-Scale) which is available
as a six-pack of 1 liter bottles by
ordering part number 8466.
The Gerni Antiscale dosing system is set by the factory.
To adjust the water hardness we
recommend that the inlet water
is tested accordingly.
Use the schematic to find the
right dosage of No Scale/anti
stone and water, and add the
mixture to the antiscale tank.
Machine flow L/h
Pump size ml/h
˚dH
˚f
˚e
Dosage
900
35
0-12
0-21,5
0 - 15
1:1 = 17ml/h
900
35
12-30
21,5 - 53,7
15 - 37,5
Pure = 35ml/h
1000
35
0-12
0-21,5
0 - 15
1:1 = 17ml/h
1000
35
12-30
21,5 - 53,7
15 - 37,5
Pure = 35ml/h
8
1)
Options / model variants
Original instructions
3.7
With the machine cold, turned
off and disconnected from power
supply:
Fill up fuel tank
1. Fill fuel tank from a clean container with a fresh fuel, heating oil, DIN 51603-1 (without
bio diesel) or Diesel EN 590
(Diesel with a bio diesel content up to 7%).
Diesel according to EN 590
(up to 7% bio diesel) can be
used with the following restrictions:
Maximum storage time in high
pressure cleaner diesel tank:
1 month. Diesel stored externally for more than 6 months
is not allowed to be filled into
Gerni high pressure cleaners.
Diesel EN 590 is not recommended for use in HPW's
at an ambient temperature
below 0°C.
Diesel EN 590 from an open
container must not be used.
The fuel must be free from contamination.
Tank capacity see chapter 9.4
Technical data.
NOTE!
At temperatures below 8°C
(46°F), the fuel oil begins to solidify (paraffin precipitation). This
can lead to difficulties in starting
the burner. Before the winter
3.8
Connecting the high
pressure hose
3.8.1 Machines with high
pressure hose reel1)
B
C
A
3.8.2 Machines without high
pressure hose reel
1)
Options / model variants
Original instructions
months it is recommended that
a fuel conditioner/stabilizer be
added (available from the fuel
oil trade).
1. Connect the high pressure
hose quick connector to the
high pressure nipple (A) located at the hose reel axle.
2. Place the high pressure hose
into the hose guide (B) and
ritain it with the clip.
3. Release the brake (C) on the
hose reel and wind up the
high pressure hose.
1. Connect the high pressure
hose quick connector to the
high pressure nipple located
at right rear of machine above
chemical tank.
9
3.9
3.10 Electrical connection
23
0V
400V
230V
400V
1. Attach quick connect adapter
found with Owners Manual to
the water supply hose.
2. Rinse the water supply hose
briefly in order to prevent sand
an other dirt particles entering
into the machine.
3. Attach water supply hose with
adapter to inlet quick connector.
4. Open water supply faucet.
Connecting the water
supply
400V
23
0V
400V
230V
3.11 Antifreeze - before first
use
NOTE!
See chapter 9.4 Technical Data
for required quantity of water and
water pressure.
In the case of poor water quality
(sand, etc.), it is recommended
that an inlet water filter be installed.
Water supply hose should be
a reinforced hose and have a
minimum inside diameter of 3/4"
(19 mm).
CAUTION!
CAUTION!
When using a cord reel:
1. Release brake of the cord
reel.
2. Unwind the cord completely.
230 V / 400 V ?
(220 V / 440 V ?)
Some models have tha ability to
be used on either 230 Volt or a
440 Volt power supply. On these
models confirm that the voltage
selector switch is in the proper
position to match the power
supply. Otherwise damage to
machines electrical components
may occur.
The machine is flushed with antifreeze at the factory to protect it
against freezin; this mixture (ap-
CAUTION!
The cleaner should only be connected to a correctly installed
electrical supply.
1. Observe safety instructions in
chapter 1.
2. Insert the plug into the electrical socket.
prox. 5 l) may be captured in a
suitable container for reuse.
4 Control / Operation
4.1 Connections
4.1.1 Connecting the spray
lance to the spray gun
NOTE!
Always remove any dirt from
the nipple before connecting the
spray lance to the spray gun.
10
A
B
C
1. Pull the blue quick-release
grip (A) of the spray gun backwards.
2. Insert the nipple of the spray
lance (B) into the quick-release connection and release
it.
3. Pull the spray lance (or other
accessory) forwards to check
that it is securely attached to
the spray gun.
1)
Options / model variants
Original instructions
4.2
Switching on the
cleaner
4.2.1 Cold water operation /
Hot water operation (up
to 100°C)
NOTE!
The cleaner switches off automatically twenty seconds after
the spray gun has been closed. To
start the cleaner again, squeeze
the trigger and the machine will
start automatically.
1. Turn the main switch to posi(cold water).
tion
Control electronics accomplishes
a self check.
The Display shows for approx. 1
second „---“.
The motor starts.
is ON.
2. Turn the main switch to position
(hot water).
3. Select temperature.
4. Unlock the spray gun and
squeeze trigger.
5. The oil burner will light.
6. Release trigger and lock the
spray gun when not in use.
4.2.2 Steam operation (over
100°C (212°F))
Beware of hot water and
steam discharge up to
150°C when operating in
steam stage.
4.3
Pressure regulation
(Tornado Lance)
1. Open cabinet (and service door
if desired - see chapter 3.6, Step
1+2).
2. Turn the twist grip on the safety
control block all the way to the left
(counter-clockwise-direction).
3. Turn the main switch to position
.
4. Select temperature (over 100°C
(212°F)).
For special applications: replace the
standard nozzle with the steam spray
nozzle (accessory).
1. Turn the twist grip on the spray
unit:
– High pressure =
clockwise (+) for high pressure
– Low pressure =
counter-clockwise (–) for low
pressure.
4.4
Pressure regulation
(VarioPress Gun)1)

For safety reasons,
never tie back or
wedge open the
trigger of the spray
gun in open
position during
operation. The trigger must be free
to close when released, thus
interrupting the flow of the water.
1)
Options / model variants
Original instructions
1. Turn the twist grip on the spray
unit:
Water volume
(–)
min.
(+)
max.
11
4.5
Using cleaning agents
1%
B
2
3
40
1
A

1%
3%
3%
5%
ca.
5%
ca.
The percentage shown in the
illustration are only approximate
data.
For special applications such as
disinfection, the exact detergent
concentration has to be determined by using a graduated
measuring container. For water
outlet volume of the machine see
chapter 9.4 technical data.
1. Select desired detergent (A)
or (B) and amount by turning
the knob to desired percentage.
2. Spray the object to be cleaned.
3. Allow the cleaning agent to
work, depending on the degree of soiling. Then rinse off
with high pressure.
CAUTION!
Never allow cleaning agent
to dry on the surface to be
cleaned. The surface may be
damaged.
The use of cleaning agents while
using the steam device will show
a lower percentage and will result
in a lower concentration.
12
1)
Options / model variants
Original instructions
5 Applications and methods
5.1
Techniques
Efficient high pressure cleaning is achieved by following a few guidelines, combined with your own personal experience of specific cleaning tasks. Accessories and detergents, when correctly chosen, can
increase the efficiency of your pressure washer. Here is some basic
information about cleaning.
5.1.1 Soaking
Encrusted or thick layers of dirt can be loosened or softened up by a
period of soaking. This is for example an ideal method within agriculture – for example, within pig sties. The ideal soaking method can be
achieved by using foam or simple alkaline detergent. Let the product
lie on the dirty surfaces for about 30 minutes before pressure washing. The result will be a much quicker high pressure cleaning process.
5.1.2 Detergent and Foam
Foam or detergent should be applied onto dry surfaces so that the
chemical product is in direct contact with the dirt. Detergents are applied from bottom to top, for example on a automobile bodywork, in
order to avoid “super clean” areas, where the detergent may collect
in higher concentrations and streams downwards. Let the detergent
work for several minutes before rinsing before rinsing and never let
it dry on the surface being cleaned.
5.1.3 Temperature
Detergents are more effective at higher temperatures. Greases, oils
and fats can be broken down more effectively at higher temperatures
also. Proteins can be cleaned at temperatures of around 60°C (140°F).
Oils and traffic film around 70°C (158°F), and grease can be cleaned
at 80°-90°C (176-194°F).
5.1.4 Mechanical Effect
In order to break down tough layers of dirt, additional mechanical
effect may be required. Special lances and rotary or wash brushes
offer this supplementary effect that cuts through dirt.
5.1.5 High Water Flow or
High Pressure
High pressure is not always the best solution and may also damage
surfaces. The cleaning effect also depends upon water flow. Pressure levels of around 100 bar (1450 psi) may be sufficient for vehicle
cleaning (in association with hot water) and higher flow levels give
the ability to rinse and flush away large amounts of dirt easily.
1)
Options / model variants
Original instructions
13
5.2 Some typical cleaning tasks
5.2.1 Agriculture
Task
Accessories
Method
Stables
Pig Pens, Sties
Chemical Foam Injec- 1. Soaking – apply foam to all surfaces (bottom to top)
tors
and wait for approx. 30 minutes.
Foam lance
2. Remove the dirt from surfaces with the high pressure
Cleaning of walls, Powerspeed lance
lance or chosen accessory. Again, clean from bottom
floors and equip- Floor Cleaner
to top on vertical surfaces.
ment
3. To flush away large quantities of dirt, change to low
Detergents
pressure mode and use the higher flow to push away
Disinfectant
Universal
the dirt.
Alkafoam
4. Use recommended disinfectant products and methods
to ensure hygiene. Apply DES 3000 disinfectant once
Disinfectant
the surfaces are perfectly clean.
DES 3000
Machinery
Tractors
ploughs etc.
1. Apply detergent to vehicle or equipment surfaces in
Detergent injection
Powerspeed lances
order to soften up dirt and grime. Apply from bottom
Curved lances and unto top.
derchassis washers
2. Proceed with cleaning using the high pressure lance.
Brushes
Clean again from bottom to top. Use accessories to
clean in difficult to reach places.
3. Clean fragile areas such as motors, rubber at lower
pressure levels to avoid damage.
5.2.2 Vehicle
Task
Accessories
Vehicle bodywork
1. Apply detergent to vehicle or equipment surfaces in
Standard lance
Detergent injection
order to soften up dirt and grime. Apply from bottom
Curved lances and unto top. In cases of particularly dirty vehicles, pre-spray
derchassis washers
with a product such as Allosil in order to remove traces
brushes
of insects etc, then rinse at low pressure and apply
normal car cleaning detergent. Let detergents settle
Detergents
for 5 minutes before cleaning off. Metallic surfaces can
Active Shampoo
be cleaned using RimTop.
Active Foam
2. Proceed with cleaning using the high pressure lance.
Sapphire
Clean again from bottom to top. Use accessories to
Super Plus
clean in difficult to reach places. Use brushes in order
Aktive Wax
to add a mechanical cleaning effect. Short lances can
Allosil
help for cleaning of motors and wheel arches. Curved
RimTop
lances or undercarriage washers can be valuable for
the cleaning of car underchassis and wheel arches.
3. Clean fragile areas such as motors, rubber at lower
pressure levels to avoid damage.
4. Apply a liquid wax using the pressure washer in order
to protect the bodywork from pollution.
14
Method
1)
Options / model variants
Original instructions
5.2.3 Buildings and Equipment
Task
Accessories
Method
Foam injectors Stand- 1. Apply thick foam over the surfaces to be cleaned. Apply
ard lance
on dry surfaces. Apply from top to bottom on vertical
Metallic equipment Curved lances
surfaces. Let the foam act for up to 30 minutes for the
Tank cleaning
optimal effect.
head
2. Proceed with cleaning using the high pressure lance.
Use applicable accessories. Use high pressure to
Detergents
dislodge large amounts of incrusted dirt or grime.
Intensive
Use lower pressure and high water volume in order
J25 Multi
to rapidly flush away loose dirt and rinse surfaces.
Combi Active
3. Apply DES 3000 disinfectant once the surfaces are
Alkafoam
perfectly clean.
General surfaces
Disinfectant
DES 3000
Rusted or damWet Sandblasting
ages surfaces prior equipment
to treatment
Areas covered by amounts of loose dirt, such as animal
remains in slaughterhouses, can be removed by using
high water flow to flush away the dirt to evacuation pits
or drains.
Tank cleaning heads can be used to clean barrels, vats,
mixing tanks etc. Cleaning heads may be hydraulically or
electrically powered and give the possibility for automatic
cleaning without a constant user.
1. Connect the sandblasting lance to the pressure
washer and place the suction tube in the sand.
2. Always wear protective equipment during sandblasting.
3. Spray the surfaces to be treated with the mix of water
and sand. Rust, paint etc will be stripped off.
These are merely several examples of cleaning tasks that can be solved by a pressure washer in association with accessories and detergents. Each cleaning task is different. Please consult your local dealer
or Gerni representative in order to discuss the best solution for your own cleaning tasks.
1)
Options / model variants
Original instructions
15
6 After using the cleaner
6.1
Switching off the
cleaner
6.2
Disconnecting supply
lines
6.3
Rolling up the electrical
cord and storing
accessories
1. Turn the main switch to position „OFF“.
2. Tur n off water supply at
faucet.
3. Squeeze the spray gun trigger
until the pressure has bled
off.
4. Slide trigger lock to the locked
position.
1. Turn the main switch to position „OFF“.
2. Tur n off water supply at
faucet.
3. Squeeze the spray gun trigger
until the pressure has bled
off.
4. Slide trigger lock to the locked
position.
5. Remove the water supply
hose from the cleaner.
6. Remove power cord plug from
the electrical supply.
Risk of tripping!
To prevent accidents, always
carefully roll up the power cord.
Machines with hose and/or cord
reel:
1. Wind up the power cord as illustrated with the plug located
in the center of the cord reel.
2. Wind up the high pressure
hose as illustrated.
3. Place the spray lance into the
spray lance storage.
6.4
Storing the cleaner
(below 0°C (32°F))
A
16
Store the cleaner in a dry heated
location to protect against freezing or protect per below instructions:
1. Remove the water supply
hose from the cleaner.
2. Remove the spray lance.
3. Switch on the cleaner with the
.
main switch in position
4. Squeeze trigger of the spray
gun.
5. Gradually pour antifreeze (approx. 5 litres) into the water
tank (A).
6. While the pump is pulling the
mixture from the water tank,
squeeze and release the trigger two or three times.
7. The machine is protected
against freezing when antifreeze mixture emerges from
the spray gun.
8. Lock the safety catch on the
spray gun.
9. Switch off the cleaner.
10.To avoid any possible damage, store the cleaner temporarily in a heated room before
using it again.
11.When the machine is put into
service again, the antifreeze
solution can be collected and
stored for future use.
1)
Options / model variants
Original instructions
7 Maintenance
7.1
Maintenance Schedule
Weekly
Every six
months or
500 operating
hours
After the first 50
operating hours
As
required
7.2.1 Water filters

7.2.2 Oil filter

7.2.3 Checking the pump oil quality
7.2.4 Changing the pump oil



7.2.5 Emptying the fuel oil tank

7.2.6 Flame Sensor

7.2 Maintenance work
7.2.1 Water filters
Water filters are fitted at the water
and pump inlets to prevent large
particles of dirt from entering into
the system.
1. Unscrew quick coupling.
2. Remove filter with tool and
clean it.
7.2.2 Maintenance of fuel
filter
1)
Options / model variants
Original instructions
1.
2.
3.
4.
Open hose clips
Replace fuel filter
Close hose clips
Dispose the cleaning solution/damaged filter in accordance with the disposal
regulations.
17
7.2.3 Checking the pump oil
quality
1. Check color of pump oil.
If the oil has a grey or white
shade, change the oil (see
chapter 7.2.4)
2. Top off oil level with fresh oil
if necessary.
Oil type see chapter 9.4 Technical Data.
7.2.4 Changing the pump oil
1. Unscrew the oil drain plug
and drain oil into a suitable
container.
2. Check that the drain plug
gasket is in place and reinstall
drain plug.
3. Fill pump with proper grade
and amount of oil.
Oil grade and capacity see
chapter ‘9.4 Technical Data’.
7.2.5 Emptying the fuel oil
tank
1. Prepare a container which
is capable of containing the
amount of fuel remaining in
the tank.
2. Place drain channel beneath
the drain plug.
3. Remove the drain plug and
drain the fuel into the prepared container carefully not
to spill fuel oil.
4. Check that the drain plug
gasket is in place and reinstall
drain plug.
5. Check tank and plug for
leaks.
7.2.6 Flame sensor
1. Remove the sensor and clean
with a soft cloth.
2. Confirm that the sensor is
correctly seated when reinstalling.
18
1)
Options / model variants
Original instructions
8 Troubleshooting
8.1
Indications on Display
Indication
on Display
FLF
FLO
Fue
Hop
HOS
Cause
Remedy
>
Flow sensor fault
Contact Gerni Service
Cold water operation possible
>
Water supply turned off or inadequate supply •
to machine
Required volume flow and pressure see
chapter 9.4 Technical Data
>
Detergent tank empty
•
Fill detergent tank or set detergent metering to „OFF“
>
Pressure regulation on the safety control •
block set to low water volume
Turn the twist grip on safety control block
to higher water pressure/volume
>
Machine scaled
Contact Gerni Service
>
>
Fuel shortage
•
Fill fuel tank
Cold water operation possible
Motor overheated
•
Turn main switch in position „OFF“, let
machine cool down
•
Remove extension cord, if being used.
•
Possible phase failure; have electrical
connections checked
>
Machine overheated
Contact Gerni Service
>
Leakage or inadmissible operating condition •
by short-time operation
>
Spray gun leaking
•
After three times of short-time operation
the machine switches off. To reset: Turn
main switch to position “OFF“, then start
again. Keep trigger squeezed for longer
than 3 seconds. If a leak occurs in the
hose and gun and causes the machine
to start and stop briefly 3 times, then the
machine will switch off.
Repair Spray gun
>
High pressure hose, coupling or line system •
leaking
Replace high-pressure hose, retighten
screw fittings
>
Detergent tank empty
•
>
Water inlet filter dirty
•
Fill detergent tank or set detergent metering to „OFF“
Clean filter (see chapter 7.2.1)
>
High-pressure pump drawing in air
•
Repair leaks
>
Flame sensor sooted
•
Clean flame sensor (see chapter
7.2.6).
>
Ignition or fuel system failure
>
Burner failure
>
Pump oil low
>
Temperature sensor damaged
Contact Gerni Service
Cold water operation possible
SEO
>
Temperature sensor damaged
Contact Gerni Service
Cold water operation possible
UPC
>
Microprocessor failure
Contact Gerni Service
LEA
LHE
LHL
POL
SEC
1)
Options / model variants
Original instructions
Contact Gerni Service
Cold water operation possible
Contact Gerni Service
Cold water operation possible
•
Fill to proper level (see chapter 7.2.3)
19
8.2
Indication lights on control panel
Indication light
Remedy
flashing
>
see FLO
•
see FLO
ON
>
Low fuel level
•
>
Low Gerni AntiStone (AntiScale) level
Service interval: Service due
in 20 hours
•
Fill fuel tank
Cold water operation possible
Fill Gerni AntiStone (Anti-Scale) tank
flashing
8.3
Cause
>
ON
>
Service interval expired
ON
>
Pump oil low
>
Power cord not properly
connected to power supply
Contact Gerni Service
Contact Gerni Service
•
Other Faults
Fault
not ON
Pressure too low
Cause
>
>
High pressure nozzle worn
out
Pressure regulation set to low
pressure
Remedy
•
Check power cord connetction
•
Check fuse (see chapter 9.4 Technical
Data)
Replace nozzle
•
•
Machine is running with
pulsating pressure and
makes knocking noise
>
Pump has drawn in air due to
detergent tank being empty
•
No detergents drawn in
>
>
>
•
•
•
Burner soots
>
Detergent tank empty
Dirt in detergent tank
Suction valve at cleaning
agent inlet soiled
fuel contamination
>
20
Fill to proper level
Turn the twist grip on safety control
block clockwise (+)
Close detergent valve. Remove lance
from gun. Operate spray gun and let
machine run until air in pump is gone
and the machine is running normally/
calm again.
Fill detergent tank
Clean detergent tank
Remove suction valve and clean or
replace
Contact Gerni Service
Burner sooted or adjustment
incorrect
1)
Options / model variants
Original instructions
9 Further information
9.1
Recycling the cleaner
Make the old cleaner unusable
immediately.
1. Unplug the cleaner and cut
the power cord.
Do not discard of electrical appliances with household waste.
As specified in European Directive 2012/19/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.
9.2
Guarantee
Our general conditions of business are applicable with regard
to the guarantee. Subject to
change as a result of technical
advances.
-
The guarantee is invalidated if the
machine is not operated in accordance with these instructions
or otherwise abused. The guarantee is invalidated if the machine is
not serviced as described.
US only:
This warranty is in effect from the
first day of purchase by the end
user.
Each machine will have one (1)
year coverage, from date of purchase by the end user, covering
parts found defective due to faulty
components, materials and/or
bad workmanship. Not included in
this warranty coverage are parts
found defective due to:
-
-
1)
Options / model variants
Original instructions
Normal wear and tear (such
as seals, valves, pistons, bearings, etc.)
Machine working under abnormal conditions.
Machines being misused.
-
Machines being repaired or
tampered with by unauthorized person(s).
The use of parts other than
Gerni Cleaning Systems, Inc.
original spare parts and/or accessories.
The burner coil on all Gerni Cleaning Systems, Inc. hot water/steam
cleaners is under warranty for five
(5) years against defects, and the
high pressure hose is covered for
an initial 30 days, under the same
conditions described above.
Gerni Cleaning Systems, Inc. will
cover labor by an authorized Gerni
CSI Dealer for a 12-month period
after the date of purchase of the
machine by the end user.
No other costs, other than laid out
in this warranty program, will be
covered by the warranty.
Dated, End-User proof of purchase must be submitted with any
claim for Warranty Service.
21
9.3
EU Declaration of Conformity
EU Declaration of Conformity
Product:
High Pressure Cleaner
Type:
MH 5M
The design of the unit corresponds to the following
pertinent regulations:
EC Machine Directive
EC Low-voltage Directive
EC EMC Directive
RoHS Directive
EC PED Directive
Applied harmonised standards:
EN ISO 12100-1, EN ISO 12100-2, EN 60335-279, EN 55014-1(2002), EN 55014-2(2001),
EN 61000-3-2 (2006)
Applied national standards and technical specifications:
IEC 60335-2-79
Name and address of the person authorised to compile the technical file:
Anton Sørensen
Senior Vice President – Global R&D
2006/42/EC
2006/95/EC
2004/108/EC
2011/65/EC
97/23/EC
Nilfisk A/S
Kornmarksvej 1
DK-2605 Brøndby
Identity and signature of the person empowered to
draw up the declaration on behalf of the manufacturer:
Anton Sørensen
Senior Vice President – Global R&D
Nilfisk A/S
Kornmarksvej 1
DK-2605 Brøndby
Place and date of the declaration:
22
Hadsund, 03-09-2015
1)
Options / model variants
Original instructions
9.4
Technical Data
MH 5M-210/1110 X
AU
Country variant
Possible voltage, V/ph/Frez.
Fuse
Power rating
Working pressure pIEC
Water flow QIEC
Max. water pressure pmax
Water flow Qmax
Max. water inlet temperature Intake-Pressure
operation
Max. water inlet pressure
Dimensions, l x w x h
Weight of cleaner
Sound pressure level LPA at a distance of 1 m
Guarantied sound power level LWA
Vibration ISO 5349
Recoil forces, lance1 / lance 2
Oil quantity
V/ph/Hz
A
kW
bar (MPa)
l/h
bar (MPa)
l/h
400V/3ph/50Hz
°C
40
bar (MPa)
mm
kg
dB(A)
dB(A)
m/s²
N
l
10 (1)
Oil type
15
6.1
210 (21)
1050
250 (25)
1110
1190x702x987
165
78
96
<1,5 ±1
48
0,75
BP Energol GR-XP 220
Specifications and details are subject to change without prior notice.
1)
Options / model variants
Original instructions
23
AUSTRALIA:
Nilfisk Pty LTd
Unit 1/13 Bessemer Street
Blacktown NSW 2148
Phone: 1300 556 710
E-mail: sales@gerni.com.au
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