#80 Hydraulic press
#80 Hydraulic Press for grape pomace.
Entirely made in Italy with top quality materials by the Polsinelli Enology Company.
- Hydraulic jack with pressure gauge in cast iron
- Equipped with wheels
- 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 80 cm; height 95 cm
- Screw diameter 80 m
- Dreg capacity Lt. 475
- Total weight 530 kg
INSTRUCTIONS FOR USE
- Fill the tank with oil (supplied with the press) through the hole, which is closed by a tap (fig. 14).
- Turn the jackscrew to the highest position by turning the nut screw (fig. 2), for greater speed; insert the plug (fig. 4) into the side hole of the stop ring (fig.3) and bring it into one of the ring joints, thus, as the nut screw turns so does the ring.
- Fill the cage with grape pomace; distribute evenly in order to avoid tilting the screw.
- 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 (fig. 2) until the jackscrew rests on the wood blocks.
- Unscrew the clamps (fig. 12) and bring them to the lowest position.
- Tighten the knob (which is placed on the discharge unit fig. 23) 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 (fig. 3) until it rests on the jackscrew, thus preventing the jackscrew from rising because of the elasticity of the pomace.
- Unscrew the knob (located on the discharge unit fig. 23) to release the pressure and turn the nut screw (fig. 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 (fig. 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 (fig. 12) closing them, so that the pistons come out of the chamber. Turn the nut screw (fig. 2) and bring it to the highest position of the screw so that the jack will be ready for another pressing.
- 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.
photo n. 3
NUT SCREW AND STOP RING BLOCKED BY PLUG (fig. 4)
(to lift the jack more easily after pressing.)
It is also available in the stainless steel cage version.