Important - Mestra R-030350 Manual Del Usuario

English
1. The large retainer marked 14 is housed in the piston (10). To replace it the piston must be
removed as follows:
a) Position the press horizontally and unscrew the two rods holding the recovery springs at the
bottom, and remove the bottom plate (E).
b) Put the press in its normal position, tighten the locking screw (2) and pump to bring out the
piston (10) as far as possible, using your hands for the final section.
c) Remove the seal (14) and fit a new one under the oil recovery slot (11). Replace the piston (10).
d) Push the piston in by hand until it goes into the hole.
e) Release the locking screw of the hydraulic system (2) and fully lower the piston (10). Then fit the
plate (E) and tighten the rods of the recovery springs.
2. The small retainer marked 15 is housed in the pump (6). To replace it proceed as follows:
a) Remove the elastic clips from the loading handle and then unscrew the plunger (3) with a size 27
spanner. Remove the nut (4) and take off the cover (12).
b) Using a size 27 socket wrench, unscrew the pump (6), then use long-nosed pliers to remove the
brass fitting (7) fastened to the press body by a clip. Remove the old retainer and fit a new
retainer.
c) Follow the instructions in reverse order to reassemble the unit, and ensure that it is fully
tightened to prevent leaks. A new copper joint (17) should be fitted.
3. The O-ring marked 16 on the sketch is housed in the pump (6). To replace it, proceed as follows:
a) Remove the plunger (3) and the nut (4). Using a needle or a needle-shaped tool, take off the O-
ring and fit a new one.
b) Re-fit the plunger (3), rotating it over its own axis if any resistance is encountered.
NOTE: Even if seal (16) has deteriorated, the press will not necessarily lose much pressure.
Normally it will continue to work but will lose a great deal of oil between the pump and the
piston (ensure that the unit is not dirty)
During the warranty period this press should only be handled at our workshops. Any handling
elsewhere will cause cancellation of the warranty.
All assembly and disassembly operations should be carried out with extreme care so as not
damage any part of the press.
If there is considerable oil spillage between the piston of the pump (3) and the nut (4) when the
lower plate drops to its rest position, too much oil has been put into the unit (Fig. 1). Unscrew
the oil filling screw and allow excess oil to drain off. The level must be between Max. and Min.
(Fig. 1).
PRECAUTIONS
♦
Do not operate the press with fragile materials.
♦
Protect yourself adequately during operation of the unit, and use safety gauntlets and goggles.
♦
Do not allow children or unqualified staff to handle the unit.
♦
Before using the facility, ensure that it is resting on a firm solid base.
♦
Ensure that the items to be pressed are correctly positioned between the plates.
♦
Be extremely careful to remove your fingers from the plates before starting the pressing operation.
10

IMPORTANT