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6. Always follow these steps in order to make a proper maintenance:
CHANGE OF VAIN, DISMOUNTING THE VAIN PNU25,PNU40,PNU50:
A) DISASSEMBLE THE ADMISSION VALVE
B) Rear cap: unscrew it with a 45 or 52 mm end wrench holding the tube, right thread.
C) Tip: unscrew it holding the tube with an end wrench, left thread.
D) Freeing the pneumatic motor:
E) MOUNTING THE NEW VAIN (inverting the process):
CHANGE OF VAIN. DISMOUNTING PNU 80, PNU100
A)Unscrew the tip. Hold the tube on a vise and loosen with a wrench, right side.
B)WE can take out the cap and the rotor with the VAIN. Mind the position of the vain.
C)Clean all the pieces and inside the tube.
D)Introduce again the cylinder with the blade. The cylinder is introduced with the holes inside, place
the cap and screw the tip, right side. Check the O ring is placed and use Loctite on the thread.
E)It is important a good tightening.
F)Lubricate the vibrator and test it.
7. All the parts have to be mounted correctly after maintenance works.
8. Every year at least, or depending on the use intensity, the machine has to be sent to an
authorized repair specialist.
PNEUMATIC POKERS
PNU 25, PNU 40, PNU 50, PNU 60, PNU 80, PNU100
- When the poker is about to be used again, repeat the same operation introducing from 2 to 5
3
cm
of petrol in the air intake and make the poker run a few minutes for self-cleaning. Then,
3
introduce 3cm
of oil with a viscosity from 20 to 30 SAE in the air intake and make the poker run
for a few minutes to lubricate the turbine again. Finally, fulfil de oil reservoir of the valve body
and the poker is ready for working again.
- Clean all the parts with solvent and dry them to remove the solvent excess.
- Examine all the parts carefully. The parts that are excessively worn should be replaced.
- When re-assembling the parts together, apply sealant on the threads and replace the "O"
rings. Then, screw all the threads tight and remove the excess of sealant, after having checked
that the ensemble is water-proof.
When the vain is worn and it is necessary change it, take it to a technical service or follow the
following steps:
A.1)
Unscrew the valve body with a 32mm end wrench, right thread.
A.2)
Remove circlip to free the internal hose connection rod.
A.3)
Make the connection slide into the valve body to let the internal tube turn when removing
the rear cap.
D.1)
Push the pneumatic motor from the tip side and make it fall from the tube to the rear cap
side.
D.2)
Pull out the front baffle from the shaft.
D.3)
Remove cylinder.
D.4)
Remove vain. Mind the position of the vain to assemble the new one correctly!
E.1)
Insert the new vain in the shaft IN THE RIGHT POSITION!!
E.2)
Insert the cylinder, then front baffle on the shaft IN SAME POSITION THAN IN POINT
D.2 FROM DISMOUNTING THE VAIN!
E.3)
Insert the pneumatic motor into the tube applying pressure and screw the tip (left thread)
in the tube.Then screw the rear cap (right thread) in the tube.
E.4)
Put the connection in position over the valve body and assemble the circlip.
E.5)
Screw throttle on valve body, right thread.
en
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