Nova COMET 14DR, Operation Manual, Page: 19 / 26

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127-0919-001
Troubleshooting
Mechanical Issue
Symptom Place to check How to resolve
Excessive Vibration
1. Work attached to the lathe
2. Lathe Mounting
(either on bench or stand)
1. Slow the lathe speed down
2. Add weight to the machine or bolt the machine down
to a solid platform.
3. Check the spindle runout by using a *DTI.
Faceplate/chuck
not running true
1. Back of face plate
2. Threads (Inner threads on
faceplate and spindle
thread on headstock)
1. Check the lathe spindle thread by using a *DTI to
ensure the spindle itself is running true.
2. Ensure the back of the faceplate is making firm
contact with the spindle base.
Turning tools not sliding
smoothly across Tool rest
1. Tool rest surface
1. Ensure the tool rest surface is smooth without any
chips, cracks of burrs.
Spur drive centre/live centre not
holding into the spindle
taper/quill taper when turning
1. Morse Taper surface
1. Clean the Morse Taper surfaces (both tool and
spindle) with a cleaning agent.
Tailstock and Headstock centre
not lining up correctly
1. Headstock alignment
1. Loosen the headstock casing from the bed and make
the required adjustment.
Tailstock Handwheel hard to
turn or will not turn
1. Quill lock
2. Inside the tailstock quill
housing
3. Quill internal threads
Check if the quill lock is not engaged.
1. Remove the tailstock quill from the tailstock body and
inspect both quill surface and quill housing surface.
2. Clean the quill and quill housing to ensure not foreign
materials exist.
3. Lubricate both quill and housing surface and
reassemble the tailstock.
Tailstock binds
1. Lathe bed
2. Tailstock adjustment plate
1. Slide off the entire tailstock from the lathe bed and
inspect the top lathe bed surface and bottom
tailstock surface.
2. Apply light lubricant to the top lathe surface if there
are no defects on both surfaces.
*Dial Test Indicator
Electrical Issue
Symptom Place to check How to resolve
Lathe does not turn on
(No lights on the control panel)
1. Power source
2. Fuse/Reset button
3. Controller
1. Check power source is providing power
2. Check the fuse/reset button is not popped out. Press
the reset switch and repower on the lathe
3. If the above 2 solutions did not resolve the problem,
may require replacing the controller. Please contact
our customer services: service@teknatool.com