Grizzly G0827 Owner's Manual page 59

Symptom Possible Cause
Bad surface finish. 1. Spindle speed/feed rate too fast for
material type.
2. Depth of cut too deep.
3. Cutting tool is dull or incorrect for
application.
4. Cutting tool rotation is backwards.
5. Workpiece not properly secured.
6. Spindle extended too far down.
7. Non-traveling table axis not locked.
Cutting results not 1. Table and spindle not at 90° to each other.
square.
2. Table travel inconsistent.
Lack of power at 1. Belt(s) slipping. Oil/grease on belt(s).
spindle.
2. Incorrect power supply voltage or
frequency.
Spindle does not 1. Worn return spring.
fully retract.
Control Panel 1. Shorted/disconnected wiring.
FORWARD and
2. Button switch at fault.
REVERSE buttons
do not work.
Power Feed
Symptom Possible Cause
Power feed does 1. Table locked.
not move table or is
2. Drive selector not engaged.
slipping.
3. Sheared pin.
4. Gears not meshing or teeth missing.
5. Motor shaft and gear shaft not engaged.
Operates at high 1. Rapid micro switch stuck.
speed only or is
2. Wiring harness disconnected.
inconsistent.
3. Variable-speed dial (potentiometer) at fault.
Lamp
Symptom Possible Cause
Lamp will not light. 1. Main power not turned ON.
2. Bulb burned out.
3. Short in wiring or wired incorrectly.
Digital Readout Unit (DRO)
Symptom Possible Cause
DRO doesn't give 1. DRO not turned ON.
reading.
2. DRO not getting power.
DRO reading is 1. Initial reading incorrect.
incorrect.
2. Sensor at fault.
Model G0827 (Mfd. Since 11/17)
Possible Solution
1. Set spindle speed correctly for material type (Page
36) or use a slower feed rate.
2. Reduce depth of cut.
3. Sharpen cutting tool; select a better cutting tool for
operation.
4. Check for proper cutting tool rotation direction.
5. Properly clamp workpiece to table or in a vise.
6. Fully retract spindle (Page 38) and raise table
(Page 30). This increases rigidity.
7. Use Z-axis or other table locks to prevent slight
table movement where axis must be fixed.
1. Tram spindle (Page 58).
2. Adjust gibs (Page 61).
1. Tension/replace belt(s) (Page 53); clean belt(s) of
any oil/grease.
2. Ensure power supply meets correct circuit
requirements (Page 14).
1. Replace return spring.
1. Inspect circuit boards, wiring connections. Replace/
repair as necessary.
Possible Solution
1. Unlock table locks (Page 30).
2. Select speed and engage drive selector.
3. Replace pin.
4. Check gears and adjust/replace.
5. Replace clutch.
1. Lightly tap on it to lower it; replace.
2. Reconnect wiring harness.
3. Replace potentiometer.
Possible Solution
1. Press switch/button on lamp or control panel.
2. Replace bulb.
3. Trace/test wiring to ensure proper connections and
verify continuity. Replace or fix as necessary.
Possible Solution
1. Switch DRO ON/Power button.
2. Inspect circuit boards, sensors, plugs, and wiring
connections. Replace/repair as necessary.
1. Zero/Reset DRO at beginning point.
2. Test/replace sensor as necessary.
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