9-12.REMOVING AND INSTALLING THE BLADE
Exchange of the saw blade:
1. Lift the saw arch to about the half height
and close the lowering valve.
2. Turn the saw arch to the right.
3. Disconnect the machine from the power
source.
4. Secure the metal belt saw against
unauthorized use.
5. Open the cover of the saw arch and disassemble the covers of the saw blade
guidance.
6. Loosen the saw blade tension by turning the hand-wheel anticlockwise.
7. First lift the saw blade of the left blade pulley and then of the driven blade pulley.
8. Clean the complete saw blade area.
9. Proceed the opposite way to assemble the new saw blade. Make sure that the saw
blade is positioned correctly onto the blade pulleys and in the blade guidance
bearings.
10. Make sure that the saw teeth show to the right direction. The saw teeth must
show to the driving motor.
11. Retighten the saw blade.
12. If required, readjust the saw blade guidance.
13. Close the saw blade housing.
14. Proceed a trial run.
15. Remount all the protective covers.
9-13.HYDRAULIC SYSTEM
D Fig.18 E
The hydraulic system on this machine consists of a hydraulic
cylinder, which is operated by a needle valve. The saw frame is
to be automatically raised up by the hydraulic movement, and as
this is done, oil passes to the underside of the piston. The
restricted flow is regulated by the feed rate control knob and governs the speed the
saw frame lowers If turn the valve (D) (fig 18) clockwise, the descending speed of the
saw frame will decrease If turn the valve counterclockwise, the descending speed of
the saw frame will increase. If user want to stop the descending saw frame, fasten the
valve (E).
17
Summary of Contents for 250S
Page 1: ...METAL CUTTING BAND SAW MACHINE MODEL 250S INSTRUCTION MANUAL 250S 060505 R2...
Page 24: ...12 CIRCUIT DIAGRAM 22...
Page 25: ...OP 23...
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