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L12 

 User manual 

 English (EU/USA) 

 15/01/2020 - ISSUE 4

 

 

 

 

 

 

 

 

 

 

17 

 

9

 

Foamstream® application (killing 
weeds) 

 

To  effectively  control  vegetation  with  the  herbicide-free 
Foamstream® system, you must co-ordinate all the different 

elements that give a successful result. If one element is not 

functioning properly, the desired result will not be achieved. 
 

For effective results the Foamstream® system requires the: 

 

Correct volume 

 

Correct temperature 

 

Correct method 

 

Correct quantity of foam agent 

 

This section looks at the speed and method of application.                                                                                                                  

 

10.1

 

Hose reel 

The  L12  unit  is  fitted  with  an  automatic  hose  reel  which 
contains 20 m / 65 ft of hose as standard. The hose comes off 

the bottom of the reel and is connected to the lance with a 

quick-release trigger gun. 

 

Only remove as much hose as is required. 
 

Once finished, rewind the hose onto the reel neatly. 

 

10.2

 

Speed                                                                                                                                                                                                           

Operators  will  average  approximately  2  -  4  kilometres  per 

hour  /  1.2 

  2.5  mph,  when  proficient  at  applying  the 

Foamstream® with the L12. Foamstream® and the L12 are 
unaffected  by  weather,  thus  ensuring  overall  productivity 

each week is consistent. 
 

DO NOT HURRY! 

 

If  the  operator  moves  too  quickly  over  the  vegetation,  the 
required  volume  of  hot  water  and  foam  may  not  have 

penetrated or been applied correctly. Total vegetation control 
will not have been achieved. 

 

10.3

 

Use of the lance                                                                                                                                                      

To kill weeds effectively, the lance head must be no more than 
25 mm / 0.08 ft above the ground at all times. If possible, 

keep the lance head in contact with the ground. While every 

element of the treatment is important, the most critical aspect 
is to ensure the lance head is not lifted from the targeted area. 

 
Control of vegetation for up to 90 days will only be achieved 

if the temperature measured at the lance head does not fall 

below 96

o

C. If the lance head is more than 30mm above the 

ground, a less than acceptable result may be achieved due to 

the rapid temperature loss.                                                                                                                                                   
 

It is recommended the operator keeps the trigger pressed, if 

possible. This maintains constant flow of hot water and foam 
and  ensures  that  they  are  leaving  the  lance  at  the  correct 

temperature.  
 

Whenever the trigger is pressed after a release, there may be 

a short period (in seconds) when the temperature needs time 
to warm up. Keep the trigger pressed, and when the tower 

light  goes  green  the  water  has  warmed  up  to  weeding 
temperature. 

                                                                                                                                                                                                      
When  moving  the  lance  head  from  one  treatment  zone  to 

another,  release  trigger  and  ensure  the  hot  foam  is  not 

applied to sensitive plant areas.                                                                                                                                                                                       

Summary of Contents for Foamstream L12

Page 1: ...EPA Est No 94946 GBR 1 USER MANUAL For L12 019 and above ENGLISH EU USA 15 01 2020 ISSUE 4...

Page 2: ...L12 User manual English EU USA 15 01 2020 ISSUE 4...

Page 3: ..._________________ 15 8 2 BOILER SWITCH __________________________________________ 15 8 3 THERMOSTAT ___________________________________________ 15 8 4 TACHOMETER ______________________________________...

Page 4: ...en if a door or window is open ONLY USE IN A WELL VENTILATED AREA Do not use the L12 in potentially explosive atmospheres 1 3 Electric Shock Hazards WARNING Do not operate the L12 s electrical compone...

Page 5: ...L12 User manual English EU USA 15 01 2020 ISSUE 4 5...

Page 6: ...ggested as best practice IT IS THE RESPONSIBILITY OF THE OPERATOR TO WEAR APPROPRIATE PPE Never operate the machine without checking that there are adequate supplies of clean petrol gasoline clean die...

Page 7: ...ees centigrade the indicator light goes green indicating that it is hot enough for weeding The water flows from the boiler 12 l m 12 bar 3 1 gpm 174 PSI and a venturi mixer opens to allow Foamstream c...

Page 8: ...03 with light WIDTH mm ft 1040 3 42 DEPTH mm ft 980 3 22 or 1950 6 40 with tank WEIGHT kg lbs 360 794 EMPTY 425 937 FULL WATER 780 LITRES 206 GAL DIESEL 32 LITRES 8 45 GAL PETROL GASOLINE 6 1 LITRES...

Page 9: ...ion main switch Cold and Hot boiler on 2 Engine Honda GX390 with speed fixed 3 Water tank 780 litres 206 gal as standard Not represented 4 Lance Not represented 5 Feet forklift slots Forklift can also...

Page 10: ...m and can be used to kill larger weeds Foam cover and hence heat retention on weeds is easier to achieve on prostrate plants that are near the ground Tall plants should be trodden down either by foot...

Page 11: ...ecies and their size 5 3 Caution poisonous weeds Some poisonous weeds such as common ragweed Senecio jacobaea may still be attractive to animals after treatment with Foamstream When treating any area...

Page 12: ...y a blanket of foam The density of the plants and foliage is a very important aspect for the operator to be aware of as this also impacts on the speed of operation It should be noted As the height and...

Page 13: ...return hose and water level sensor are connected Pipe hose routes are clear of sharp edges and hot surfaces There are no signs of leaks from any pipe or connection Petrol gasoline tank is full of cle...

Page 14: ...ill come out Turn the boiler switch to ON position 3 on Figure 7 The switch will illuminate green and the boiler will heat up whenever the trigger is pressed The boiler is only active when the trigger...

Page 15: ...nce keep the trigger pressed and wait for up to 1 minute 8 3 THERMOSTAT The thermostat indicates the water temperature at the outlet of the boiler it can be switched from Celsius to Fahrenheit 8 4 TAC...

Page 16: ...mpletely In the above conditions whereby the machine has run low on input fluids the user simply has to re fill the required fluids and then can restart the machine as usual The below conditions indic...

Page 17: ...ver the vegetation the required volume of hot water and foam may not have penetrated or been applied correctly Total vegetation control will not have been achieved 10 3 Use of the lance To kill weeds...

Page 18: ...ses usually grasses immediately lighten in colour and flatten to the ground This can be difficult to observe when using hot foam Moss will go bright green In all cases a distinctive smell similar to c...

Page 19: ...ine OFF The whole machine turns off Close the valve to the main water tank You can also shut the machine down by turning the engine off directly without waiting for the boiler to cool down 12 Basic fa...

Page 20: ...th engine on but no or low flow from lance 3 1 Trigger off Press trigger 3 2 Main water valve shut Open valve 3 3 No water in tank Re fill tank 3 4 Leak Ensure all fittings are tight 3 5 Air in water...

Page 21: ...other and positioned over the nozzle tip Replace if necessary SYMPTOM CAUSE REMEDY 5 Green tower light does not come or stay on indicating that the boiler is not reaching temperature 5 1 Boiler not st...

Page 22: ...mstream Plus Change restrictor 0 4mm 0 016 in 8 2 Restrictor has come loose Check O rings on restrictor and push back in SYMPTOM CAUSE REMEDY 9 Flow out of lance too hot steam and or high thermostat r...

Page 23: ...tachometer on the front panel when the engine is off A high level maintenance schedule is detailed on the next pages but for more information ask your distributor about planned maintenance Figure 8 Cl...

Page 24: ...arly 1000h Yearly 1500h 2 Yearly 5000h 3 Yearly Honda GX390 Engine oil Check level Change Air filter Check Clean Fuel line Check Sediment cup Check Clean Charge voltage Check Alternator water pump bel...

Page 25: ...soot Fuel pump filter Electrical connections Water pump Water filter Check Oil level condition Smooth pump operation Pressure hoses and fittings Oil Water leaks 1St oil change Replace Oil change Valve...

Page 26: ...e chassis CARE SHOULD BE TAKEN WHEN LIFTING THE L12 ONLY USE LIFTING MACHINERY AND STRAPS CHAINS CAPABLE OF LIFTING MORE THAN 400 KG 882 LBS 14 1 On vehicle set up It is recommended that the L12 has i...

Page 27: ...L12 User manual English EU USA 15 01 2020 ISSUE 4 15 Schematics Figure 10 L12 P ID...

Page 28: ...L12 User manual English EU USA 15 01 2020 ISSUE 4 28 Figure 11 Wiring diagram rev 1 2...

Page 29: ...L12 User manual English EU USA 15 01 2020 ISSUE 4 29 Figure 12 Electric diagram rev 1 2...

Page 30: ...ould have been apparent to you if earlier d Subject to section 3 below WTL will have no liability if you do not comply with the above e WTL s options in cases where it is liable include repairing or r...

Page 31: ...or alteration in factory foam additive dosage settings Please note that it is not to be inferred or implied from the fact that WTL may supply you with any technical means of altering the settings for...

Page 32: ...on of conformity is available upon request Engine emissions are EURO and USA EPA CARB certified Sound Pressure Level 75 dB A Guaranteed Sound Power Level 87dB A Measurement Uncertainty K 0 4 dB A Weed...

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