Service Home Chip Auger System - Troubleshooting Guide - TG0049

Chip Auger System - Troubleshooting Guide - TG0049

6.2 Chip Auger System - Troubleshooting Guide

Last updated: 10/10/2025

Chip Auger System - Troubleshooting Guide

TG0049

Exploded View Single Auger

  1. AUGER DISCHARGE CHUTE
  2. V-FLANGE CLAMP
  3. O-RING 2-425 BUNA
  4. AUGER
  5. WASHER 5/16 SPLT LOCK PLTMED
  6. NUT 5/16-18 HEX
  7. MOTOR COUPLING
  8. WASHER 5/8 STEEL .048THK X 1 1/4
  9. WAVE WASHER .734 O.D. .531 I.D. 4/7
  10. SHCS 1/4-20 X 3/4 LOCTITE
  11. SPACER
  12. SHCS 5/16-18 X 2 1/4
  13. SHCS 5/16-18 X 3/4
  14. SSS 1/4-20 X 3/8 CUP PT
  15. ENCLOSURE PANEL PAN SINGLE AUGER
  16. GASKET CONVEYOR MOTOR
  17. AUGER MOTOR 1PH

Introduction

  1. Multi Auger
  2. Single Auger

Symptom Table

Symptom Possible Cause Corrective Action
Alarm 9819 CHIP CONVEYOR SHORT CIRCUIT The auger motor start capacitor is at fault.  Inspect the auger motor start capacitor for damage. 
Alarm 9848 CHIP CONVEYOR MOTOR DISCONNECTED There is no power from the I/O PCB to the motor.  Verify the voltage at the I/O PCB and the motor. 
The auger does not start.  The circuit breaker is tripped.  Check for a short in the motor or the cable. 
There is no power from the I/O PCB to the motor.  Verify the voltage at the I/O PCB and the motor. 
The fuses are blown (I/O-version R or earlier).  Check the fuses on the I/O PCB. 
The auger motor start capacitor is at fault.  Inspect the auger motor start capacitor for damage. 
Parameters are not set correctly.  In service mode, check that Parameter 209.03 is enabled. If the machine is Classic Haas Control or an NGC machine that has not been updated after October 10th, 2018, check that Parameter 209.17 is enabled. This parameter will have no effect if the machine has been updated after that date. 
The auger is noisy or oscillates between forward and reverse. Then, Alarm 9906  CHIP CONVEYOR MALFUNCTION is generated.  There is an excessive chip build-up or an obstruction.  Clear all chips and obstructions from the auger trough and chip chute. 

There is no chip build-up or obstruction, and the machine generates

Alarm 9906 CHIP CONVEYOR MALFUNCTION 

 The auger motor is bound up.  The machine is detecting an overcurrent condition.  Check the discrete input CHIP_CONVEYOR_OVERCURRENT cycles from 0 - 1  or 1 - 0 (0 means overload condition.  Check the motor for burnout or binding.  
The auger does not remove chips.  The auger drive assembly has a mechanical issue.  Inspect the auger motor and coupling for damage. 
The auger is worn.  Inspect the end of the auger for wear. 
The auger is bent.  Remove the auger from the machine. Roll the auger on the floor and visually inspect for a bend. 

Chip Auger, Conveyor, may start without operator action, even with doors open. 

 The machine has software 100.17.000.1016 Update software to 100.17.000.2030 or greater. This problem has been corrected such that the conveyor never restarts automatically. With a Classic Haas Control, the operator can restart the conveyor with the door open. NGC machines updated after October 10th, 2018, will have strict door rules that make this impossible. 

M31 is restarting conveyor timers if the conveyor is already on. 

 The machine has software earlier than 100.17.000.2030, and the conveyor cycle restarts every time an M31 is encountered. 

Update software to 100.17.000.2030 or greater. In the new software, if a conveyor cycle is already running but in the off state, a M31 will NOT restart the conveyor. The conveyor will follow the cycle it is currently in.

Motor Cable Inspection

Corrective Action:

Inspect the motor cable for any sign of damage. Check for burn marks at the plug. This could be caused by coolant contamination.

Measure the Ohms across the motor power cable leads [1] at the plug. There should be resistance leg to leg. An open reading suggests a bad motor or cable.

Measure the Ohms on the motor power cable from each power leg to the plug's ground leg [2]. This reading should be open.

If the cable shows a short leg to ground at the plug, disconnect the power cable at the motor and check each motor power lead to the motor chassis [3]. If the reading is open, the cable is at fault. If any lead tests short, the motor is shorted.

Voltage

Corrective Action:

Find the chip conveyor motor cable 140 at the I/O PCB. Press [CHIP FWD]. Use a multimeter with needle tip probes to measure the voltage between the black and red wires on the cable.

Have someone press and hold [CHIP REV]. Measure the voltage between the black and white wires. When the I/O PCB operates correctly, each voltage reading is 240 VAC.

If the voltage at the I/O PCB is correct, open the conveyor motor junction box. Use a multimeter with needle tip probes to check for voltage on the power leads at the motor.

If there is no voltage, check the motor and the cable. If there is voltage, check the capacitor. If you verify the voltage and capacitor are correct, inspect the motor drive shaft and keyway.

Fuses

Corrective Action:

Check these fuses at the bottom right corner of the I/O PCB (Fuse type: AGC 5amp):

  • Single phase motors: FU2 [1] /FU3 [2]. There should be no fuse in FU4 [3].
  • 3 phase motors: FU2 [1] /FU3 [2] /FU4 [3]

A short in the motor or the cable could have blown the fuse.

Capacitor

Corrective Action:

Inspect the conveyor motor capacitor for damage. A damaged capacitor usually has signs of deformation or bubbling on the casing. This could be caused by a short in the motor or in the cable.

Open the motor junction box. Check the capacitor. Look for burn marks on the case.

Measure the capacitor. Most multimeters can measure capacitance upon manual activation (turn to the correct units of measurement and push the yellow button). It should be 6 or 9 microfarads, as noted on the capacitor's case.

Chips

Corrective Action:

Clear chips and obstructions. Make sure the conveyor settings are optimized for the chips that are produced.

Auger Inspection

Corrective Action:

Cutting material that is harder than the auger [2] will wear down [1] the auger and chip chute faster than normal wear. For the auger to work correctly, it must extend far enough into the chute to force the chips up and out.

Remove the chip chute. Check the end of the auger for wear.

Measure the length the auger extends from where the chip chute connects to the machine. Measure the length of the bottom of the chute, from where it attaches to the machine to where the chute angles up. Compare the length of the auger and the bottom of the chute. The auger should be within 1/2” to 1” from where the chute angles up.

Inspect the drive coupler [2] on the auger for damage. Make sure all of the screws are tight. The illustration shows the hardware for installing an auger on a VF-1/2/3/4/5.

  1. Bolt
  2. Drive coupler
  3. Nylock nut
  4. Auger
  5. Motor shaft/keyway
  6. Spacer
  7. 5/8" flat washer
  8. 5/8" wave washer

Electrical Diagram