agrifac PYTHON User manual

1
PYTHON
Manual & Partsbook 2010

MANUAL & PARTS BOOK
FOR
PYTHON
DRAIN CLEANER
2010-en
Revision 0
April 22, 2010
Postal address : Agrifac Machinery b.v., P.O. box 78, 8330 AB Steenwijk, the Netherlands
Visitor address : Agrifac Machinery b.v., Eesveenseweg 15, 8332 JA Steenwijk, the Netherlands
Telephone : [phone]
Fax : [phone]
Email : [email protected]om
Internet : www.agrifac.com

EC declaration of conformity
(directive 2006/42/EC, Annex IIA)
We,
AGRIFAC MACHINERY B.V.
P.O. Box 78, 8330 AB Steenwijk, the Netherlands,
declare entirely under own responsibility that the product:
DRAIN CLEANER, type “PYTHON”
complies with the directive 2006/42/EC on machinery.
Steenwijk, April 2010.
D. Blaauw
Technical director Agrifac Machinery B.V.

TABLE OF CONTENTS
Chapter Page
1. Description.......................................................................1
2. Operation.........................................................................5
3. Safety instructions ...........................................................7
4. Frost protection................................................................9
5. Maintenance..................................................................11
6. Failures..........................................................................13
7. Technical specifications.................................................15
8. Options..........................................................................17
9. Spare parts lists.............................................................19

Drain cleaner
1
1. Description
The drain cleaner consists of the following parts:
•Frame
•Reel
•Side arm with hose drive
•Guide arm
•Hydraulic system
•Water plumbing
Frame
A strong frame that can be attached to the three-point linkage of the tractor and that has
place for: - reel
- pump
- inserting mechanism
- hydraulic system
- lighting
The frame also has standard pick up points for the use of a fork-lift truck.
Reel
The reel has an extra large diameter. The advantage is that the hose will be less bended.
Because of that the friction is as little as possible, so that the decrease of pressure is
limited. Because of the narrow high construction of the reel it can coil a long hose (up to
500 m) without guidance.
Side arm with hose drive
The side arm can be moved up and down with a hydraulic cylinder so that the bottom side
of the guide arm can be placed right in front of the drain. The hose drive consists of two
hydraulic driven rubber rolls of Ø 200 mm. They are constructed in such a way that they
have a maximum traction on the hose. The counter pressure rolls are suspended in a
pivoting system so that a connecting coupling can also go through the drive. With the
pivoting part and the adjusting bolt, the pressure of the counter pressure rolls on the hose
can be adjusted. When the pressure is too low the drive on the hose can start to slip and
the hose will damage too fast. When the pressure is too high the hose will also damage.
Metre counter: Behind the drive rolls you will find a metre counter. This counter will register
how many metres of hose are in the drain and can indicate the location of the blockage.
Guide arm
The guide arm is constructed in such a way that it is possible to work over a fence. The
inserting bend of the arm can be turned, so that it can also be inserted on the other side of
the ditch. For transport on the road the guide arm can be taken off the side arm and can
be put away on the back of the frame.
Hydraulic system
The hydraulic system can be connected with the double-acting valve of the tractor or with
the single-acting valve with a free return. During your work with the drain cleaner the
system must be under continuous pressure. The machine is operated with the triple valve
block. This valve block can also be mounted on the rear side or in the cabin. Should the
machine work in the opposite direction of rotation the pressure and the return pipe must be

Drain cleaner
2
exchanged or the hydraulic lever in the tractor must be put in the other position. The
hydraulic motors on the reel and the side arm are connected in such a way, that the hose
will stay tight on the reel during both coiling and uncoiling. The coiling and uncoiling speed
can be adjusted with the speed control valve next to the valve block.
Water plumbing
Pump
The COMET APS 145 water pump has a capacity of 132 l/min and a maximum pressure of
50 bar. This is an ample reciprocating diaphragm pump driven by the drive shaft of the
tractor. This pump is not sensitive for polluted water. The pump is constructed in such a
manner that all the parts that are liable to wear can be easily replaced. The maximum
number of revolutions of the pump is 550 rev/min., but may never be under 300 rev/min.
When using a drive shaft with 1000 or 750 revolutions you can keep the engine speed of
the tractor lower. This will save fuel and give less noise. Because the pump is ample, you
will be able to work with a lower engine speed.
Pressure regulating
The water pressure can be regulated with the turning knob on top of the pressure
regulator. With a lever on the pressure regulator the pump can be relieved, for example
while you are placing the guide arm in front of the drainpipe.
The optimum working pressure is 30 to 35 bar. With a higher pressure the PE hose will be
overloaded and will have a shorter life. Because of the friction in the hose a higher
pressure will hardly bring more delivery.
A lower pressure will not bring enough water to the nozzle, which leads to bad cleaning.
Pump
pressure
Nozzle
pressure
L/min at 315 m
Nozzle
pressure
L/min at 400 m
20 bar 6.0 bar 49,4 5 bar 47,4
25 bar 8.5 bar 56,1 7,4 bar 53,3
30 bar 10 bar 61,6 8,5 bar 58,8
35 bar 12.5 bar 67,4 11,3 bar 63,2
40 bar 14.5 bar 71,4 12,9 bar 68,6
45 bar 16.5 bar 75,7 14,8 bar 72,5
The return water of the pressure regulator will be connected to the upper side of the guide
arm. The hose is lubricated with this water in the inserting arm. During withdrawal the hose
is cleaned again.
Filters
The suction filter is 10 m long and has a ditch filter at the end. In front of the pump you find
the main filter.