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Promac 378VB Manuel D'instructions page 10

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Tension the belt and tighten the motor lock knob (U, Fig 8).
The belt is properly tensioned when finger and thumb
pressure midway between the two pulleys causes
approximately 10 mm deflection.
Close and lock the pulley cover with the locking screw (W,
Fig 8).
Use the variable speed select knob (Y) to set the spindle
speed.
The digital readout (X) shows the spindle speed.
7.4 Table Tilt Adjustment
Disconnect the machine from the power source (unplug).
Loosen the hex cap bolt (X, Fig 10) to tilt the table.
Caution:
Only loosen the hex cap bolt slightly, otherwise the table
assembly will separate from the column and fall.
Tighten the hex cap bolt.
8. Maintenance and inspection
General notes:
Maintenance, cleaning and repair work may only be
carried out after the machine is protected against
accidental starting by pulling the mains plug.
Periodically lubricate gently with grease.
-the drive splines (grooves) in the spindle
-the teeth of the quill
-the column-rack
Clean the machine regularly.
Defective safety devices must be replaced immediately.
Repair and maintenance work on the electrical system may
only be carried out by a qualified electrician.
Fig 10
378VB
9. Trouble shooting
Motor doesn't start
*No electricity-
check mains and fuse.
*Defective switch, motor or cord-
consult an electrician.
Chuck will not stay on spindle
*Oil or grease on contact surfaces-
clean the tapered surfaces of chuck and spindle.
Machine vibration
*Incorrect belt tension-
Adjust belt tension.
*Dry spindle quill-
lubricate spindle quill.
*Spindle pulley loose-
tighten retaining nut.
*Motor pulley loose-
Tighten set screw.
*dull drill bit-
resharpen drill bit.
Drill bit burns
*incorrect speed-
reduce speed.
*Chips clogged-
retract drill bit frequently
*dull drill bit-
resharpen drill bit.
*feeding too slow-
feed faster.
Drill leads off
*cutting lips or angle not equal-
resharpen drill bit correctly.
*drilled hole off centre-
drill a pilot hole first.
*bent drill bit-
use a proper drill bit.
*drill bit not properly installed-
install drill bit correctly.
10. Environmental protection
Protect the environment.
Your appliance contains valuable materials which can be
recovered or recycled. Please leave it at a specialized
institution.
11. Available accessories
Refer to the Pricelist.
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