Huvema HU 40 GTF Super Vario, Manual, Page: 14 / 30

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7.2 Daily Maintenance
Make a general cleaning by removing dust and shavings from the machine.
Check that the shields and emergency stops are in good working order.
After daily use, disconnect machine from power source or press emergency stop switch to shut off the
power completely. Do not keep the machine connected over 24 hours, it may cause damage to the
machine.
7.3 Weekly Maintenance
Inspect if the screen is clogged by iron, thoroughly clean the machine including the coolant tank by
referring to 6.3.
Change the coolant water once a week, following stops in 6.3.
7.4 Monthly Maintenance
Lubricate machine column, spindle and rack devices.
Check that all screws on the motor, the pump and the guard are tight and secure on the right position.
7.5 Semi-annual Maintenance
Change the oil in the gear head using oil specified or its equivalent oil described in 7.1. Proceed by
following 7.1-3 lubrication.
Lubricate worm gear unit O1 at the left rear head, referring to 6.2 and 7.1.
7.6 Annual Maintenance
Change the driving belt using type OPTI-belt 720x8M and M5x1100-14.
7.7 Oils for Lubricating Coolant
Considering the vast range of products in the market, the user can choose the one most suited to
their own requirements, using as reference the type SHELL LUTEM OIL ECO.
THE MINIMUM PERCENTAGE OF OIL DILUTED IN WATER IS 8~10%.
7.8 Oil Disposal
Oil products must be disposed in a proper manner following local regulations.
7.9 Special Maintenance
Special maintenance operations must be carried out by skilled personnel. However, we advise
contacting dealer and/or importer the term special maintenance also covers the resetting of protection
and safety equipment and devices.
8 Troubleshooting
8.1 Troubleshooting the inverter
Prior to operating all electronic parts, the following aspects should be taken into consideration first
Note: Only eligible and qualified personnel can make electronic adjustments.
1.
Disconnect machine from power supply.
2.
Electronic parts are extremely sensitive, do not use hands or metal tools to remove or install such
parts.
3.
As remaining voltage still exists in the capacitor even after the electric current has been cut off,
wait until the light disappears from the lighted display completely before proceeding with any
work to prevent any accidents or hazards from occurring.
4.
Pay close attention to the electronic circuit board so that they are free from any defects.
5.
Never connect the alternating current directly to the output connector (U/V/W) of the speed
adjuster. The electronic self-diagnosis program can notify you of situations like motor
overloading and too low or too high voltage, etc. When the program detects an error, the
machine will stop immediately and such error will be displayed on the inverter’s digital display.
Follow the solutions to correct any errors. Close the electrical cabinet and connect machine to
power supply.