© 84 Engineering 2021
Page 14 of 14
6.
Trouble Shooting
Table 4
Issue
Possible Cause
Action
Grinder will not start
No power supply
Check power supply at local outlet and
main board
Damaged power cord
Check power cord and replace as
necessary
Motor or VFD failure.
Have equipment checked by a qualified
electrician
Grinder not operating at full
speed
Check VFD speed setting
Adjust as necessary
Excessive length or incorrect
current carrying capacity of
extension cords.
Reduce length or upgrade extension
cord.
Poor belt tracking
Incorrect adjustment of
tracking mechanism
Adjust as necessary
Worn or damaged belt
Replace belt
Incorrect location of grinding
wheels or platen in relation
to support arm
Adjust wheels and platen location as
necessary
Worn grinder wheels or
damaged wheel bearings
Check and replace as necessary
Slack Belt/Belt slipping
Belt tensioner fully raised
Adjust platen support arm to correct
location
Worn grinder gas strut
Replace strut
Excessive grinding pressure
Reduce grinding pressure
Excessive wheel wear
Incorrect wheel alignment
Check wheel alignment
Debris on wheel surfaces
Clean and adjust as necessary
Excessive vibration
Damaged or worn belt
Inspect and replace belt
Damage or worn drive,
tricking or idler wheels
Inspect and replace wheels
Loose or unstable mounting
of the pedestal mount.
Check and secure pedestal mount
Unstable work bench (bench
mounted grinder)
Check and secure workbench.
Operation damaging belts
Belts running in the incorrect
direction
Adjust belts to run in the direction
marked on the back of the belt.
Insufficient space between
the belt and tool rest
Adjust the position of the tool rest
Ground surface not square
Tool rest not square to
platen
Adjust platen and/or tool rest angle
