Shear Pin Replacement; Headstock Alignment; Coolant System; Trouble Shooting - Promac GH-1640ZX Operating Instructions Manual

8.5 Shear pin replacement

Lead screw and feed shaft are
equipped with shearing pins to
protect the drive against overload.
If a shear pin breaks it must be
replaced.
Knock out the broken pin.
Line up the holes and fit a new pin.

8.6 Headstock alignment

The headstock has been aligned at
the factory.
Check that the machine bed is level
and correct before proceeding.
Turn a test piece for inspection.
The diameter should be the same on
the whole turning length.
If headstock alignment is needed:
Loosen the 4 headstock bolts that
hold the headstock to the bed.
Do not loosen completely; some drag
should remain.
Adjust on the lateral adjustment bolts
located on the rear of the headstock.
Tighten all headstock bolts.

8.7 Coolant system

Remove access cover on tailstock
end of machine stand (Fig 28).
Fig 28
Pour 15 litres of coolant mix into dip
pan.
Follow coolant manufacturer's
recommendations for use, care and
disposal.

9. Trouble shooting

Motor doesn't start
*No electricity-
check mains and fuse.
*Defective switch, motor or cord-
consult an electrician.
Machine vibration
*Unbalanced work piece-
Reduce spindle speed.
*Workpiece deflection-
improve chucking length or diameter,
support on tailstock end.
*Tool deflection-
reduce tool length.
*Slide backlash-
adjust slide gibs.
*Slides running dry-
lubricate with oil.
*Dull tool tip-
resharpen or change tool.
*Chip load too high-
reduce depth of cut or feed-
Tool tip burns
*Cutting speed too high-
reduce spindle speed.
*Dull tool tip-
resharpen tool tip.
Machine turns a taper
*Tailstock alignment is offset-
align tailstock position.
*Machine bed is twisted-
machine bed must be level.
No automatic power feed
*Shear pin has broken-
replace shear pin

10. Environmental protection

Protect the environment.
Your appliance contains valuable
materials which can be recovered or
recycled. Please leave it at a
specialized institution.
This symbol indicates separate
collection for electrical and electronic
equipment required under the WEEE
Directive (Directive 2012/19/EC) and
is effective only within the European
Union.
9

11. Available accessories

Refer to the PROMAC -Pricelist for
various accessories.