MH 7P Operating instructions 107140709 B (08.2015)
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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.
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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 •...
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CAUTION High-pressure hoses, fittings and couplings are important for the safety of the clean- er. 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 •...
Contents Description ......................7 2.1 Purpose ........................7 2.2 Operating elements ..................... 7 Before starting the cleaner ................. 8 3.1 Transport and assembly....................8 3.2 Combustion settings ....................8 3.3 Set the brake ....................... 8 3.4 Install Crank handle for high pressure hose reel/cord reel .......... 9 3.5 Fill up detergent tanks ....................
2 Description Purpose This high-pressure cleaner has been designed for professional use. It can be used for cleaning agricultural and construction equip- ment, stables, vehicles, rusty surfaces, etc. The cleaner has not been approved for cleaning surfaces which comes into contact with food. Always use the cleaner as described in these operating instruc- tions.
3 Before starting the cleaner Transport and assem- 1. The safest way to lift the machine is to use a fork-lift truck The arrows in the il- lustration indicate the best places to position the fork. 2. It is also possible to lift the machine by hand from the pallet.
Install Crank handle 1. Pull cap of crank in arrow for high pressure direction. hose reel/cord reel 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. Release the brake (C) on the hose reel and wind up the high pressure hose. NOTE • High-pressure hoses, fittings and couplings are important for the safety of the cleaner. Use only high-pressure parts ap- proved by GERNI. Options / model variants Original instructions...
3.9.2 Machines without Connect the high pressure hose high pressure hose quick connector to the high reel pressure nipple located at right rear of machine above chemical tank. 3.10 Connecting the water 1. Attach quick connect supply adapter found with Owners Manual to the water supply hose.
3.12 Electrical connection age to machines electrical com- ponents may occur. 400V 400V The following should be observed when connecting the high pressure washer to the electric installation: • Only connect the machine to an installation with earth connection. • The electric installation shall be made by a certified Some models have the ability...
4 Control / Operation Operation Before starting up the cleaner each time, please check it carefully for any defects. Always check for sufficient levels of fuel, oil and AntiScale. Also check the high pressure hose and gun, the insula- tion of the electric cable should be faultless and without any cracks. NOTE To achieve a long life and avoid problems with dirt in the gun and lance, the coupling and nipple have to be kept clean.
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. 4.3.2 Steam operation over safety control block all the 100°C (212°F) way to the left (counter- clock wise-direction).
The surface may be damaged. • This machine shall only be used with cleaning chemicals supplied or recommended by GERNI. • This machine will, when a cleaning agent has been chosen, spray out the detergent on high- as well as low-pressure.
5 Applications and methods Techniques Efficient high pressure cleaning is achieved by following a few guidelines, combined with your own personal experience of spe- cific cleaning tasks. Accessories and detergents, when correctly chosen, can increase the efficiency of your pressure washer. Here is some basic information about cleaning.
Some typical cleaning tasks 5.2.1 Agriculture Task Accessories Method Stables Chemical Foam Injec- 1. Soaking – apply foam to all surfaces (bottom to Pig Pens, Sties tors top) and wait for approx. 30 minutes. Foam lance 2. Remove the dirt from surfaces with the high pres- Cleaning of walls, Powerspeed lance sure lance or chosen accessory.
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5.2.3 Buildings and Equipment Task Accessories Method General surfaces Foam injectors, foam 1. Apply thick foam over the surfaces to be cleaned. lances, standard Apply on dry surfaces. Apply from top to bottom on lances vertical surfaces. Let the foam act for up to 30 min- Metallic equipment Curved lances utes for the optimal effect.
6 Transport and storage Transport For safe transport in and on vechicles we recommend to prevent the equipment from sliding and tilting by fixing it with belts. Transport: • Do not tilt the machine. • Run the machine to empty the break tank and de pressurise the high pressure hose by squeezing the trigger.
Rolling up the electri- Risk of tripping cal cord and storing To prevent accidents, always accessories carefully roll up the power cord. Machines with hose and cord reel: 1. Wind up the power cord as illustrated with the plug located in the center of the cord reel.
Maintenance guide- To avoid hazards, damaged parts must be replaced either by your lines GERNI dealer, their customer service or a similarly qualified per- son. Ensure that the machine is regularly serviced by authorised GERNI dealers in accordance with the maintenance plan. Failure to do so will invalidate the warranty.
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7.3.3 Checking the pump 1. Check color of pump oil. oil quality If the oil has a grey or white shade, change the oil. 2. Top off oil level with fresh oil if necessary. Oil type see chapter 9.4 Techni- cal Data.
8 Troubleshooting Indications on Display Indication Cause Remedy on display > Flow sensor fault Contact Service Cold water operation possible > Water supply turned off or inad- • Required volume fl ow and pressure see equate supply to machine chapter 9.4 Technical Data >...
Indication lights on control panel Indication light Cause Remedy > see FLO • see FLO flashing > Low fuel level • Fill fuel tank Cold water operation possible > Low AntiStone (Anti-Scale) • Fill AntiStone (Anti-Scale) tank level > Service interval: Service due Contact Service flashing in 20 hours...
EU Declaration of conformity EU Declaration of Conformity Product: High Pressure Cleaner Type: MH 7P The design of the unit corre sponds to the following EC Machine Directive 2006/42/EC pertinent regulations: EC Low-voltage Directive...
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