Maintenance; Troubleshooting - Greencut PRE100 Manual De Instrucciones

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MAINTENANCE

Good maintenance will extend the life of the machine. Prolonged or constant use may require more intensive
maintenance for the machine to continue to function properly.
• Repair or replace components that cannot be repaired immediately: use only manufacturer's or recommended
parts.
• Improper maintenance or lack of care in maintaining the equipment may void the warranty.
• Before each use, check the hydraulic jack for correct operation, and for misalignment / binding of moving parts,
damage or any condition that may affect the equipment safety or performance. Do NOT use damaged or unsafe
equipment.
• Maintain general cleanliness and dryness of all surface to prevent corrosion.
• Change the hydraulic jack oil every 2 years:
1. Remove the hydraulic jack from the press.
2. Open the valve slightly and push down on the jack so it is fully lowered.
3. Remove the rubber plug from the drain port on the rear of the jack.
4. Tilt the jack and empty the hydraulic oil into a suitable container.
5. Clean any oil from the jack body and place in an upright position.
6. Use a suitable hand pump type oil dispenser to refill the jack through the oil drain port with ISO 150 or
AW-32 hydraulic oil. When the oil level begins over-flowing from the drain port, the jack is full. Re- install
the drain plug.
7. Close the valve, then "pump" the jack and ensure the piston rises. It is recommended to "bleed" the jack of
any air inside the hydraulic system as follows:
a. Open the valve ½ to 1 full turn, then push down on the piston so it is at the lowest position.
b. "Pump" the jack repeatedly at least 20 times to circulate the oil through the system and push any
air into the oil reservoir.
c. Remove the rubber plug from the drain port on the rear of the jack to release any pressurised air.
d. Top up the oil reservoir if required, then re-install the drain plug.
8. Re-install the hydraulic jack to the press.

TROUBLESHOOTING

The table includes some of the most common problems, their causes and remedies.
HYDRAULIC JACK RAM NOT EXTENDING OR IS RETRACTING UNDER LOAD
POSSIBLE FAULT
Valve not fully closed
Air in system
Insufficient hydraulic oil
OIL LEAKING FROM HYDRAULIC JACK
POSSIBLE FAULT
Over-filled
Valve or piston seal no longer serviceable Replace seal.
Check that the valve is fully closed.
Bleed the jack.
Ensure the oil reservoir if filled to the correct level.
Ensure the oil reservoir if filled to the correct level.
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