Gerni MC 4M Operating Instructions Manual

107145556 C (03.2015)

MC 4M

Operating
instructions

Original instruction2

1 Symbols used to mark instructions

WARNING & Safety instructions in these operating instructions which must be ob-

served 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 Oper-

ating Instructions for recommended use, maintenance and problem solving

• Never spray electri-

cal 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 han-

Original 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

Original instruction4

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.

5

A

6

5

13

18

19

21

20

15

1

3

4

7

8

9

10

11

14

17

2

16

12

6

1.4

1.5

1.3

1.1

1.2

B

O

I

1.0

1.1

1.2

1.3

1.4

BA Valve

BA Valve

7

1.1

1.2

1.3

=

1.0

MAX

CHEM

3.0

MIN

MIN

C

4.0 4.1

8

1.0

1.2

O

I

1.1

1.3

1.4

8.1

1.6

MAX

MAX

5.1

MC 4M

D

9

E

10.2

1.2

1.3

1.1

1.0

*)

Optional accessories / Option depending on model

Original instruction

10

Quick reference guide

This high pressure washer has been designed for
professional use typically in following cleaning ap­plications:
floor/wall, auto/truck, buildings/constructions, con­tainer/barrel and craftsman use.

The pictorial quick reference guide

The pictorial quick reference guide is designed for
helping you when starting up, operating and storing
the unit. The guide are subdivided into 5 sections.

A
Before starting
DO READ SAFETY INSTRUCTIONS BEFORE USE!
Operating elements:

1. Inlet water connection

2. Nipple for high pressure hose

3. Lifting handle

4. Cabinet

5. Cable release

6. Oil sight

7. On/off switch

8. Lance

9. Holder for lance

10. Ergo 2000 spray handle

11. Child lock

12. Holder for spray lance*)

13. Holder with a 2½ l canister *)

14. Cabinet lock

15. Foam Sprayer *)

16. Flexo Power lance*)

17. Placement for lances

18. Cable end fixation

19. Foot kick

20. Holder for Foam Sprayer/Canister lid*)

21. Hose hook *)

Assembling the unit:

1.1 Mount filter and Gardena coupling

1.2 Mount the seal and 3/8” nipple on high

pressure outlet

1.3 Connect hoses (water and high pressure

hose)

1.4 Mount the lance

1.5 Connect the electrical cable to mains.

B
Switching on the unit

1.0 Check oil level (see E1.2)

1.1 Open water tap

1.2 Switch on the High Pressure Washer

1.3 Open child lock at spray handle

1.4 Activate sprayhandle

C
Control/operation
Using cleaning agents:

1.0 Check / clean hole in suction limiter at Foam

Sprayer

1.1 Mount Foam Sprayer at canister

1.2 Set spray angle horizontal/vertical

1.3 Activate spray handle.

Adjust pressure at FlexoPower lance (Standard
models):

3.0 Turn the blue part of the nozzle head Min./
max.

Cable unwind and storage:

4.0 Turn the cable hook for cable release /
storage

4.1 Fixate cable end at Hose hook after use

D

After using the unit

1.0 Switch off the High Pressure Washer

1.1 Disconnect from mains

1.2 Turn off the water

1.3 Release pressure at spray handle

1.4 Set child lock

1.6 Place spray handle and lance in holders

E

Maintenance

1.0 Unlock cabinet opening cabin locks (use
coin or screwdriver)

1.1 Remove cabinet

1.2 Check / tip up oil to max (SAE 80W-90)

1.3 Oil max v.s. pumptype MC 4M (NA4)

*)

Optional accessories / Option depending on model

Original instruction

11

Operating instructions

Troubleshooting MC 4M

Fault Cause Remedy

Pressure
fl uctuations

Air in suction hose. Fill hose with water and connect again
Not enough water supply Stop! Until appropriate water mains or hose reflect

pump Qmax
Water filter is clogged up Rinse the water filter
High pressure nozzle blocked/worn Clean or replace the nozzle with same size
Suction height exceeded Stop! until max suction height is present as specified

Foam
Sprayer
not produc­ing foam

Detergent used is non-foaming Use only detergents with foaming agent.
Nozzle on suction hose is clogged up
or filled with dried out soap

Rinse detergent limiter / flush with tempered clean

water.
Foam sponge in foam Sprayer is
clogged up.

1 Rinse/soak foam Sprayer in tempered water for 8

hours or more

2 Or dismount front of foam Sprayer and exchange/

rinse the SS foam sponge with a new
Detergent tank empty Top up detergent tank

Motor does
not start
or bozzes
when
switched
on

Power cable broken Contact professional electrician for replacement of

power cable
Plug is not inserted in mains Insert plug
Mains fuse is blown Reset power mains
Plug has a loose connection to cable Repair/reassemble plug on cable - skilled electrician
The pump is blocked or frozen Stop! Unfreeze pump or contact dealer service depart-

ment
The thermal protector is activated Stop! Cool off machine for at least 5 minutes

Maintenance plan

Weekly

First time after 50 operating

hours

Every 200 operating

hours

As required

Cleaning
water fi lter

A1.1 A1.1

Checking oil
level/tip up

B1.0/E1.2

Changing
pump oil

Contact dealer/service dpt. Contact dealer/service dpt.

Special operating instructions

Self-suction

0: Dismount HP hose from the machine.
1: Fill the suction hose with water and connect to High
Pressure Washer (Item no. 6400000)
2: Mount suction hose with a hose clamp on the pump
inlet.
3: Turn main switch to ¨I¨ for few seconds. Repeat
turning main switch on and off several times until water
comes out of pump.
4: Mount the HP hose, spray handle and lance.
5: Turn main switch to ¨I¨.
6: Unlock the spray handle and operate it several times
until water coming out without air.

Parts needed for suction Item number

1 x Hose Nozzle 20R 3/4¨ 61369
1 x Hose 3/4¨ Max length 5 mtr
1 x Hose Clamp 3/4¨
1 x Suction Filter with foot-valve 6400000

*)

Optional accessories / Option depending on model

Original instruction

12

EU Declaration of conformity

We,
Nilfi sk A/S

Banemarksvej 58,
DK-2605 Broendby
DENMARK

Hereby solely declare, that the products:

Product Description Type

HPW - Professional - Mobile

230/1/50, IPX5 MC 4M*

Are in compliance with the following standards:
EN 60335-1:2012
EN 60335-2-79:2012
EN 55014-1:2006+A1:2009+A2:2011
EN 55014-2:1997+A1:2001+A2:2008
EN 61000-3-2:2006+A1:2009+A2:2009
EN 61000-3-11:2000
EN 50581:2012

Following the provisions of:
Machinery Directive 2006/42/EC

EMC Directive 2004/108/EC
RoHS Directive 2011/65/EC
Noise Emission Directive 2000/14/EC – Conformity assessment procedure according to Annex V.

- Measured noise level [dB]: 83

- Guaranteed noise level [dB]: 86
Hadsund 28-01-2015 Anton Sørensen,

Senior Vice President – Global Operations

Place Date Name & Title Signature

*)

Optional accessories / Option depending on model

Original instruction

13

Specifications

Gerni

MC 4M-160/620

240/1/50/15

1

Country variant

AU

2

Possible voltage

V/ph/Hz

240/1/50

3

Fuse

A

15

4

Power rating

kW

3,0

5

P

IEC

Working pressure

bar (MPa)

160

(16)

6

Q

IEC

Water flow

l/h

560

7

Pmax

Max. water pressure

bar (MPa)

200

(20)

8 Q

MAX

Water flow

l/h

620

9

t

max

Max water inlet temperature, Intake-Pressure
operation.

°C (°F)

60, >40 max. 1 h.

(140, >104 max. 1 h.)

10

p

max

Max. water inlet pressure

bar (MPa)

10 (1)

11

Max dry suction height

m

0,5

12

Dimensions LxWxH

mm

382x382x1017

13

Weight

kg

38,5

14

L

PA

(IEC 60335-2-69)

Sound pressure level L

PA

dB(A)+/-2

73

15

L

WA

(IEC 60335-2-69)

Sound power level L

WA

dB(A)+/-2

86

16

a

h

(ISO 5349 ah)

Vibration

m/s2

<1.5 +/- 1

17

Recoil forces, lance

N

27,8

18

Oil quantity

L

0,42

19

Oil type

SAE 80W-90

AUSTRALIA:

Nilfi sk-Advance Pty LTd

Unit 1/13 Bessemer Street

Blacktown NSW 2148

Phone: [phone]

E-mail: [e-mail]