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Which Petrol Pressure Washer?

Wednesday, 6 January 2016 12:09:00 Europe/London

 

Which petrol Pressure Washer?

lavor independentkm2800p km3200p km3700p kiam

Choosing a Petrol Pressure Washer.

If youre considering purchasing a petrol driven pressure washer, you've probably already used an electric machine in the past, and realised you need more power or greater independence from a power source.

Petrol Engines

Most petrol engined power washers will give you just that. Engine sizes vary from 6.5 Hp, 7, 9, 13 & 14 HP units. They are usually 4 stroke engines which means, they need oil in the engine sump. Usually they are coupled directly to the high pressure pump, though some can have a reduction gearbox in between.

A Reduction gearbox is usually found on the more powerful models where the intended use is for long hours and heavy duty work. The other benefit of a reduction gearbox is that the pump runs at a much slower rpm (1400 rpm) meaning that it is easier for the pump to suck water from a standing source ( water tank)  - so theres no need for a mains supply.

Pump Types. axial pump  petrol washer crank pump

Industrial Pumps are normally made from Brass, and are of two types... the Axial design ( on smaller machines) and the popular crank pump, featuring 3 pistons that are normally fitted to heavier duty machines.

The power of the pressure washer pump is determined by the operating pressure and the amount of water it can pump. Pressure is measured in either Bar or PSI (pound per square inch) with one Bar equal to 14.5 psi. Water flow is measured in L/m (litres per minute). The combination of the pressure & flow rate is what gives you the cleaning power. One is no good without the other.

Uses.

For general cleaning around the home, or for cleaning cars, bikes & garden machinery; a 6.5 or 7 HP model will be sufficient - giving pressures of 2800 - 3000 psi @ around 12 litres per minute.

For Industrial cleaning jobs... as the saying goes .. " the bigger the better". So 9, 13 or 14 Hp engined units will give the best performance; up to 3500psi @ 15 litres per minute. At these pressures - they'll shift heavy dirt & debri from agricultural plant, boats, HGV's & industrial equipment. Their most popular use would be for Professional Driveway Cleaning; where the pressure washer will be used for up to 8 hours a day, giving reliable, powerful performance.

The other benefit of greater performance is the fact that any accessories you connect to the petrol pressure washer - such as a drain cleaner, turbo nozzle or rotary cleaner - will work far better on a more powerful machine. This means you'll get the job done a lot quicker too.

 

 

Posted in Pressure Washers By Jonathan Paxton

How do I start my Pressure Washer?

Friday, 11 December 2015 15:36:12 Europe/London

KIAM PRESSURE WASHER

How do I start my pressure washer?

 

Petrol Pressure washers.

Check that both oil levels in the pump & petrol engine are at the correct levels. ( Refer to Manufacturers Instruction Manual)

Ensure the transport plug has been removed from the top of the pump & replaced with the breather plug. Ensure the pressure washer is on solid, level ground.

Fill the fuel tank with Unleaded petrol.

Connect the pump inlet to a garden hose & outside tap.

Connect the pump outlet to the 10m high pressure hose using the quick-release connectors.

Connect the trigger gun & lance to the high pressure hose.

Now turn the water On.

 

On the engine; move the throttle lever to full (rabbit sign), move the fuel lever to On, and move the Choke lever to On.

Switch the red On/Off switch to On.

Depress and hold the trigger on the spray wand to relieve any built-up pressure within the pump and continue to hold the trigger while pulling the engine start cord.

Using the pull starter; give the recoil starter a long, strong pull to start the engine.

On Starting; insert the preferred power nozzle in the end of the lance and pull the trigger to start cleaning.

After starting the engine, regulate the choke back down to the closed position to close off the airflow to the engine.

Helpful Tips.

It is advisable, whilst pulling the pull start with one hand, to have the other hand pressing the trigger gun. his ensures there is no buildup of back pressure in the pump on start-up, as this can make the pull starting feel stiff.

 

Diesel Pressure washers.

Check that both oil levels in the pump & diesel engine are at the correct levels. if fitted with a gearbox Reduction system check level of oil in gearbox too. ( Refer to Manufacturers Instruction Manual)

Ensure the transport plug has been removed from the top of the pump & replaced with the breather plug. Ensure the pressure washer is on solid, level ground.

If the unit is fitted with a battery (electric start) ensure the terminal connections are tight, and the battery is fully charged.

Fill the fuel tank with diesel.

Connect the pump inlet to a garden hose & outside tap.

Connect the pump outlet to the 10m high pressure hose using the quick-release connectors.

Connect the trigger gun & lance to the high pressure hose.

Now turn the water On.

On the diesel engine; move the throttle lever to full (this can usually be locked in position), move the fuel lever to On.

Recoil Start.

Pull the recoil rope fully out - and you will see the decompression lever on the top of the engine lift up. Next, hold down the decompression lever with one hand, and pull the recoil starter; letting the decompression lever go at the same time. They usually need a strong pull to start.

 

Electric Key Start.

Hold down the decompression lever, and turn the start key fully over Keep the decompression lever down for a few seconds, and then allow the decompression lever up, and start. Release the key. This allows the engine to spin up freely and then start easily.

 

On Starting; insert the preferred power nozzle in the end of the lance and pull the trigger to start cleaning.

After starting the engine, regulate the throttle back down to the required level for smooth running.

 

 

Electric Pressure Washers.

Check that the oil level in the pump is at the correct level. ( Refer to Manufacturers Instruction Manual)

Connect the pump inlet to a garden hose & outside tap.

Connect the pump outlet to the high pressure hose connector.

Connect the trigger gun & lance & nozzle to the high pressure hose.

Now turn the water On.

Depress the trigger to relieve any built-up pressure within the pump and continue to hold the trigger while switching the machine to the “ON” position.

Posted in Pressure Washers By Jonathan Paxton

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