Hydraulic oil duration: The life of hydraulic oil varies depending on many factors, e.g. temperature and pressure at which the machine is
run, the presence of humidity or residual water, etc. Normally it can last between 2.500 and 5.000 hours of service. If the oil loses
viscosity, becomes impure, or turns a whitish color from having had water pumped into it, drain the oil by emptying the housing via the
plug located at the bottom of the machine. Refill the oil following the instructions found in the INSTALLATION section above. Because
there is no natural loss of oil or oil vapors, an adequate level of hydraulic oil should last several years, making it unnecessary to check
the oil level regularly. If the oil level is insufficient, the piston will not move smoothly, since air will be entering the circuit.
Changing the hydraulic oil: Remove the oil outlet plug located at the bottom of the base and drain the reservoir, emptying the oil into an
appropriate recipient (please recycle used oil). Replace the plug and seal the oil outlet site hermetically. Using a funnel, fill the reservoir
with 10 liters (for H15/H20 models), 15 liters (for H26/H31 models) or 25 liters (for H42/H52 models) of hydraulic oil via the tank
opening. Do not fill the reservoir to the top since a certain amount of air must be present to allow for expansion. Use oils for medium
pressure hydraulic assemblages (approx. 100 bar), and of a viscosity of approximately 5º Engler (equivalent to IS03498: cat HL VG46
or DIN8659: HL-46). After filling the reservoir, raise and lower the piston several times to eliminate air pockets from the hydraulic circuit.
Oil filter: Located inside the oil reservoir, the oil filter is not accessible to the user and should only be replaced by a qualified technician.
To remove the oil filter remove the two screws that attach the closing clamp to the filter and pull the filter outward. Normally, the filter
should not become dirty or present any abnormality. If the filter must be changed, use a similar filter with a thread of 3/8" BSP and a
filtering capacity of 10 liters per minute, (5 liters per minute for H15/H20). After reassembling the unit, the closing clamp must be sealed
hermetically.
Oil temperature: Because of the pressure transmitted by the pump, after prolonged periods of use the hydraulic oil may reach
temperatures of up to 60ºC (140ºF) and the base side panel may become warm to the touch. This machine is not designed to withstand
permanent, uninterrupted use at high pressure, but rather to run intermittently with pauses to allow for the dissipation of the heat
generated, the amount of which depends on the consistency of the mixture.
Cylinder ram: In order to lengthen the life of the hydraulic cylinder ram, leave the piston head at the bottom of the cylinder when the
machine is not in use. The ram will thus be completely submerged in hydraulic oil.
Lid closure: The lid of the barrel can be shut more or less tightly depending on how watertight the closure should be. If the mixture is
customarily dry, the closure can be loosened, making it easier to close the lid. If, however, the mixture contains more liquid, the closure
should be tighter to avoid leaks. To loosen the lid in E models, loosen the upper lid screws until the desired seal is obtained. For P
models, loosen the nuts located beneath the clamp and either loosen or tighten the 2 lid fixing bolts. Then retighten the 2 lock nuts
completely. To keep crystallized residue (from salts, spices, etc.) from impeding the proper closure of the lid, remember to rinse the lid
bolt and bearing with hot water after using the machine.
Lack of power: If the machine seems to lack power, notify the service department of the dealer where the machine was purchased.
They should verify the following points: that the air holes located at the base of the barrel are completely free of obstruction, that the
piston and the piston gaskets are perfectly clean and free of residue which could inhibit the movement of the piston, that the voltage of
the power source is compatible with that selected for the motor, that the motor is not functioning with only two phases, that there is
enough hydraulic oil, that there is no oil leakage from the hydraulic screws or pipes, and that the oil filter is clean and unobstructed.
Electrical cord: If the electrical cord becomes damaged, have it replaced immediately with a cord of identical technical characteristics
(your local distributor can supply you with one).
Spare parts: To order spare parts, contact the dealer where the machine was purchased. Be sure to give full details when identifying
the machine (model, serial number, year of manufacture, power, voltage, frequency, etc.). This data can be found on the technical
specifications plate located on the machine itself.
9. TROUBLESHOOTING GUIDE
Problems
Machine does not work.
Electric motor runs, but the
piston does not move up or
down.
Piston moves up and down but
machine seems to lack power.
22
Possible causes
Machine is unplugged.
Machine connected to a lower voltage.
No voltage in one or more phases.
Switch located on the right of the machine is in
0-stop position (I models only).
0-1 switch (I models only) is defective.
Internal on/off microswitch in knee lever is
defective or not properly adjusted (A models
only).
Speed regulator on minimum.
Motor is turning in the wrong direction.
The air holes located at the base of the barrel
are obstructed.
Piston and piston gaskets are dirty.
Voltage of power source is not compatible with
voltage selected for the motor.
Three-phase motor (if available) is only
functioning with two phases.
Lack of hydraulic oil.
Oil leakage from hydraulic screws or pipes.
Oil filter is dirty.
Solutions
Plug the machine in.
Change machine voltage.
Check fuses, plugs, and switches.
Turn the switch to 1-start position.
Call an electrician.
Call an electrician to replace or adjust the
microswitch.
Turn speed regulator knob clockwise.
Interchange two of the three phases in the plug.
Clean air holes.
Clean piston and piston gaskets.
Call an electrician to change motor voltage.
Adjust phases at the power source.
Fill the oil reservoir to the "MAX." mark.
Call your local dealer.
Call your local dealer to replace it.