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Specifications 

 

General 

Silvan Linkage Oktopus Air Assist sprayers are 
for  use  in  the  application  of  agricultural 
chemicals  in  vineyards,  berries  and  trellis 
crops. The sprayers use a high pressure pump 
and  nozzles  to  atomise  the  chemical  solution, 
together  with  a  turbine  fan  and  multiple  air 
outlets to distribute the spray. 

 
Tank 

Polytuff impact resistant polyethylene. 
Capacity  500  litres  with  calibrated  level 
indicator. 
Offset,  non  spill  screw  down  lid  of  255  mm 
diameter with basket strainer.  
Continuous  by-pass  agitation  in  bottom  of 
tank.  

 

Pump 

Constant  displacement  oil  backed  diaphragm 
pump  with  Nitrile  diaphragms  and  corrosion 
resistant, anodised aluminium body. 
Pump Model  
500 litre 

  APS-96 

Pump 

output 

and 

maximum 

operating 

pressure at 540 PTO rpm as shown below. 

  
Pump No.      Output 

 Max. Pressure 

 

   l/min   gpm 

 Bar    psi 

APS-96 

94 

20.6 

40    580 

 

  

Fan 

The Silvan Oktopus sprayer uses a turbine fan 
(or  centrifugal  wheel)  450mm  diameter  with 
multiple  (5+5)  adjustable  air  ducts  with 
diffusers. The fan unit has a polyethylene cowl 
with  expansion  chamber  and  protective  mesh 
screen.     
Two  speed  oil  bath  gearbox  with  neutral 
position 

 

 

Max.Speed  540 PTO rpm              2,700 rpm 
Air speed 

– 450 dia fan                    80 m/sec 

Capacity  -  450 dia fan              14,000 m

3

/hr 

 

PTO Drive   

Quality  540  rpm  telescopic  drive  PTO  shaft 
with safety shields. 

 

 

Controls 

12 volt electric valve set with manual pressure 
regulator,  master  valve,  section  valves  for 
left/right 

sides 

and 

electric 

pressure 

adjustment. In cab switch box control. 

Nozzles 

10  twin  non-drip  nozzles  for  easy  changing  of 
application  rate.  Flip  over  action  to  turn  on  or 
off. 
Brass  body  with  removable  hollow  cone 
ceramic

 

jets.

 

 

Filtration 

Three stage filtration with removable elements. 
Tank lid strainer 

18 mesh. 

Suction line filter   

50 mesh (blue). 

Pressure line filter 

80 mesh (yellow) 

 
Frame 

Heavy duty galvanised steel construction.  
Reversible  Category  I  and  II  linkage  pins  on 
500 litre sprayers.  

 

Optional Equipment 

Automatic rate controller 

 

Dimensions and Weights 

With PTO drive and standard equipment fitted.  
Length 

L

, width 

W,

 height 

H

, all in (mm). 

Mass 

M

 (kg) with tank empty.  

To calculate gross mass with tank filled  add 1 
kg per litre of tank capacity. 
.  

 

 

 

 

 

 

500 litre    

L

1400 

W

 1190 

H

 2500 

M

140 

 

Power Requirement 

Minimum tractor PTO horsepower at 540 rpm. 
500 litre  

 

50 HP 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for Oktopus 500L

Page 1: ...Operator s Manual MANSLV 1 Rev C October 2018 500 Litre Linkage Oktopus Sprayer...

Page 2: ...13 14 Lubrication and Maintenance Daily Weekly Monthly and Annual Maintenance 15 Trouble Shooting 16 Trouble Shooting 15 Lubrication and Maintenance 16 Warranty Certificate 19 YOUR SPRAYER DETAILS Rec...

Page 3: ...ranty period begins on the date the product is delivered to the first retail purchaser for a period of 12 months This Warranty Covers Only conditions resulting directly from defects in workmanship or...

Page 4: ...nsion chamber and protective mesh screen Two speed oil bath gearbox with neutral position Max Speed 540 PTO rpm 2 700 rpm Air speed 450 dia fan 80 m sec Capacity 450 dia fan 14 000 m3 hr PTO Drive Qua...

Page 5: ...and power requirement of the sprayer Refer to the tractor operator s manual for safe working loads and relevant tractor safety instructions Exercise extreme care when operating in hilly or uneven ter...

Page 6: ...ead and follow the information on all safety decals before operating the sprayer Failure to comply with these warnings could result in serious injury or death Safety decals should be kept clean and le...

Page 7: ...rding of the safety decals shown on the previous pages is given below Before operating the sprayer read all safety warning decals Failure to comply with these warnings could result in serious injury o...

Page 8: ...ayer it is the selling dealer s responsibility to install and set the PTO shaft to the correct length The following information is provided for reference Set the linkage height so the ends of the two...

Page 9: ...le diffuser nozzle Width Loosen the U bolt 1 and slide the inside RHS 2 to the desired width Re tighten the U bolt Height Loosen the 8mm bolt 3 and slide the tube outlet mount 4 to the desired height...

Page 10: ...centrifugal clutch which protects the gearbox and driveline if the PTO is engaged rapidly The sprayer should always be operated at 540 PTO rpm to ensure correct operation of the centrifugal clutch and...

Page 11: ...t for the remaining sections The sprayer is then adjusted correctly Adding Chemicals Chemicals are added to the tank through the top lid opening Take care to avoid the spillage of chemicals or mixed s...

Page 12: ...laced in the standard positions If their position should be changed make sure that the jet is spraying into the air stream and not fouling on the diffuser as shown below HCC Hollow Cone Ceramic Jets H...

Page 13: ...2 Total Output Required Calculate the total spray output required in litres per minute l min using the following formula Check that the calculated output does not exceed the rated capacity of the pump...

Page 14: ...2 Orange at 10 11 Bar pressure will give the desired output An alternative would be to use HCC025 Red at 7 Bar pressure to give the equivalent output 2 Orchard Fruits Application rate 1200 l ha Travel...

Page 15: ...0 x 5 x 3 600 10 l min Date of Test _______________ Application Rate _______________ litres ha Speed of Travel _______________ km hr Row Spacing _______________ metres No of nozzles _________ Output p...

Page 16: ...run clean water through the pump and lines to purge them of chemicals Rinse out the tank to remove powdered material Never leave chemicals in the tank that may settle to the bottom harden and break in...

Page 17: ...f the pump Air trapped in filter or suction lines Pump does not prime No liquid in tank or not covering suction inlet Suction filter blocked Suction filter stop valve closed Suction filter bowl loose...

Page 18: ...1 SILVAN AUSTRALIA PTY LTD ABN 48 099 851 144 68 Atlantic Drive Keysborough VIC 3173 Australia Telephone 1300 745 826 Facsimilie 1800 745 826 www silvan com au...

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