User guide
13
SAR 440 SA GDS
ROUTINE
AND SPECIAL
MAINTENANCE
THE MAINTENANCE JOBS ARE LISTED BELOW, DIVIDED INTO
DAILY, WEEKLY, MONTHLY AND SIX-MONTHLY INTERVALS. IF
THE FOLLOWING OPERATIONS ARE NEGLECTED, THE RESULT
WILL BE PREMATURE WEAR OF THE MACHINE AND POOR
PERFORMANCE.
8.1 - Daily maintenance
- General cleaning of the machine to remove accumulated shavings.
- Clean the lubricating coolant drain hole to avoid excess fluid.
- Top up the level of lubricating coolant.
- Check blade for wear.
- Rise of saw frame to top position and partial slackening of the
blade to avoid useless yield stress.
- Check functionality of the shields and emergency stops.
8
BEFORE PERFORMING THE FOLLOWING OPERATIONS,
THE ELECTRIC POWER SUPPLY AND THE POWER CABLE
MUST BE COMPLETELY DISCONNECTED.
8.2 - Weekly maintenance
- More accurate general cleaning of the machine to remove shav-
ings, especially from the lubricant fluid tank.
- Removal of pump from its housing, cleaning of the suction filter
and suction zone.
- Clean the filter of the pump suction head and the suction
area.
- Cleaning with compressed air of blade guide arms (guide bear-
ings, pads and drain hole of the lubricating cooling).
- Cleaning flywheel housings and blade sliding surfaces on flywheels.
- Check condition of the blade cleaning brushes.
- Greasing of motor flywheel bearings.
8.3 - Monthly maintenance
- Check the tightening of the motor flywheel screws.
- Check that the blade guide bearings on arms are perfect running
condition.
- Check the tightening of the screws of the gearmotor, pump and
accident protection guarding.
8.4 - Six-monthly maintenance
REDUCTION UNIT
-
we suggest to make the first oil replacement after about 300
working hours and wash internal parts carefully.
Use synthetic oil SHELL TIVELA OIL 320 type or equivalent.
-
The following oil replacement should be made after about 2000
working hours.
VARIATOR UNIT
-
Make the oil replacement after about 2000 working hours using
the SHELL DONAX TA type or equivalent.
WARNING : absolutely do not mix synthetic oil and mineral oil.
Replace the oil in the hydraulic unit ad least once a year using
SHELL HYDRAULIC OIL 32 type or equivalent.
- The saw with the ascending arch device, a complete oil change
is advisable once a year using SHELL HYDRAULIC OIL 32 or
similar.
- Continuity test of the equipotential protection circuit.
8.5 - Oils for lubricating coolant
Considering the vast range of products on the market, the user
can choose the one most suited to his own requirements, using as
reference the type SHELL LUTEM OIL ECO.
THE MINIMUM PERCENTAGE OF OIL DILUTED IN WATER IS
8 - 10 %.
8.6 - Oil disposal
The disposal of these products is controlled by strict regulations.
Please see the Chapter on “Machine dimensions - Transport - In-
stallation” in the section on
Dismantling
.
8.7 - Special maintenance
Special maintenance operations must be carried out by skilled per-
sonnel.
However, we advise contacting THOMAS or their dealer and/or im-
porter. Also the reset of protective and safety equipment and de-
vices, of the reducer, the motor, the motor pump and electric com-
ponents is to be considered extraordinary maintenance.
7.8 – Replacing the blade
- Lift the sawframe in upright position.
- Loosen the blade with the hand wheel, remove the shield of the
mobile blade guide and the shield of the belt cleaning brush.
- Open the posterior and anterior carter flywheels and extract the
old blade from the flywheels and from the blade guide blocks.
- Insert the new blade inserting it between the plaques and then
on the flywheel holder, taking note of the direction of the teeth in
respect to the direction of the cut (refer to diagram below).
- Replace the tension of the blade checking that it is housed
perfectly within the flywheels.
- Re-assemble the shields of the mobile guide blade and of the
belt cleaning brush and close the carter flywheels cover, checking
that the safety dip-switch is activated otherwise the machine will
not operate when it is switched on.
WARNING: always use blades having dimensions spcified
in this manual and for which the blade guide heads have
been set: otherwise, see chapter on "Description of the
operating cycle" in the section Starting-up..
CUTTING DIRECTION
PROBABLE REPLACEMENT OF OTHER PARTS –
REDUCTION GEAR OR SPEED CONTROL, MOTOR PUMP
AND ELECTRICAL COMPONENTS – TO BE EXECUTED BY
SPECIALISED AND COMPETENT PERSONNEL.