ø70 Hydraulic press

ø70 Hydraulic Press for grape pomace

The 70 mm hydraulic wine press is a professional-quality product designed and built by Polsinelli to support winemaking professionals and enthusiasts in the extraction of must from pomace.

A jack with a pressure gauge made of cast iron also runs along it, exerting a pressure of up to 400 atmospheres on the marc. The hydraulic wine press of 70 also consists of a cage made of steamed beech staves with removable pins that is 83 cm high and 70 cm wide, complete with a steel must collection basin reinforced with handkerchiefs.

Finally, the hydraulic grape pomace press of 70 for sale on Polsinelli also integrates pezzotti and crescents: a highly specialised tool for the oenological sector capable of meeting all quality and robustness requirements.

Characteristics:

• Hydraulic jack with pressure gauge in cast iron
• Steel threaded screw
• Cage made of evaporated beech wood slats with removable pins.
• Must gathering basin with reinforced steel brackets
• Max operating pressure 400 atm.
• Cage size: diameter 700 mm; height 830 mm
• Screw diameter 70 mm
• For a production of: 1000 Kg of grapes
• Total weight 390 kg

• Complete with chunks and crescents

SPARE PARTS

INSTRUCTIONS FOR USE

1. Fill the tank with glycerine oil (supplied with the press) through the hole, which is closed by a tap (14).
2. Turn the jackscrew to the highest position by turning the nut screw (2), for greater speed; insert the plug (4) into the side hole of the stop ring (3) and bring it into one of the ring joints, thus, as the nut screw turns so does the ring.
3. Fill the cage with grape pomace; distribute evenly in order to avoid tilting the screw.
4. Place the half-moon press plates and press blocks onto the pomace  (positioning them as in the photo n.2 below), tighten the nut screw (2) until the jackscrew rests on the wood blocks.
5. Unscrew the clamps (12) and bring them to the lowest position.
6. Tighten the knob (which is placed on the discharge unit) and pump, lengthening the lever with the special extension, so that the pistons reach the maximum stroke, when the chain as in the figure above the gauge, stretches, it will be time to reenter the pistons in order to repeat the operation. However you need to first screw the ring (3) until it rests on the jackscrew, thus preventing the jackscrew from rising because of the elasticity of the pomace.
7. Unscrew the knob (located on the discharge unit) to release the pressure and turn the nut screw (2) until the pistons fall into the chamber, screw the knob on again and pump until you reach 400 atmosphere (visible on the analog gauge), let stand, then pump again to maintain constant maximum pressure. Usually with 2 or 3 strokes, the pressing is complete, after which you have to empty the cage from the grape pomace, do not screw the ring (3) so that the jack rises with the pomace. At this point bring back the pistons to the chamber and move the clamps to the highest position (12) closing them, so that the pistons come out of the chamber. Turn the nut screw (2) and bring it to the highest position of the screw so that the jack will be ready for another pressing.
8. Be careful Not to exceed 400 atmosphere, because the internal spring is calibrated to this pressure, and if it exceeds this level, the safety valve causes a sudden drop in pressure.