Auger System - How it Works and Troubleshooting Guide

How it Works

To start the auger system, program an M31 code or press CHIP FWD on the keypad. The control sends a signal to the I/O PCB to turn on the auger system. Power is then sent to any auger [2], or multi-auger [1] connected in the system. When they are powered, they turn in the direction that moves the chips out of the machine.

To stop the auger system, program an M33 code or press CHIP STOP. To reverse the auger system, press CHIP REV.

In program mode, the auger system reverses only if there is a jam. It reverses (5) times, and if the jam does not clear, the auger system will shut off. Run the auger system intermittently to remove chips. You can set the auger system cycle and run time with Settings 114 and 115.

  • Setting 114 CONVEYOR CYCLE (MIN): The interval that powers the auger. For example, if Setting 114 is set to 30, the auger turns on every half an hour. *On-Time should be set no greater than 80% of Cycle-time.
  • Setting 115 CONVEYOR ON-TIME(MIN): The amount of time the auger operates. For example, if Setting 115 is set to 2, the auger system, runs for 2 minutes and turns off. *On-time should be set no greater than 80% of Cycle-time. If the auger has an optional coolant washdown or air knife, the option will run while the auger is on.
  • Setting 196 CONVEYOR SHUTOFF: (Applies to software versions 10.03 for Lathes and 17.03 for Mills and higher) Specifies the amount of time (in minutes) without activity before the auger system and coolant washdown turn off.
Symptom Possible Cause Corrective Action Section
The auger does not start. The circuit breaker is tripped. Check for a short in the motor or the cable. 1
There is no power from the I/O PCB to the motor. Verify the voltage at the I/O PCB and at the motor. 2
The fuses are blown (I/O-verion R or earlier). Check the fuses on the I/O PCB. 3
The auger motor start capacitor is at fault. Inspect the auger motor start capacitor for damage. 4
The auger is noisy or oscillates between forward and reverse. There is an excessive chip build-up or an obstruction. Clear all chips and obstructions from the auger trough and chip chute. 5
Chips do not exit the chip chute. The auger drive assembly has a mechanical issue. Inspect the auger motor and coupling for damage. 6
The auger is worn. Inspect the end of the auger for wear.

Section 1

Symptom: The auger does not start.

Possible Cause: The circuit breaker is tripped.

Corrective Action:

Inspect the motor cable for signs of damage. Check for burn marks at the connector. This could be caused by coolant contamination.

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

Measure the Ohms on the motor power cable from each power lead to ground [2] of the connector. This reading should be open.

If the cable shows a short to ground at the connector, 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 or the cable is shorted.

Section 2

Symptom: The auger does not start.

Possible Cause: There is no power from the I/O PCB to the motor.

Corrective Action:

Find the chip auger motor cable 140 at the I/O PCB for the primary auger, or the Quad Chip PCB for side augers. 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 should be 240 VAC.

If the voltage at the I/O PCB is correct, open the auger 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, measure the resistance at the motor and the cable. Refer to Section 1.

If there is voltage, check the capacitor. Refer to Section 4.

If you verify the voltage and capacitor are correct, inspect the motor drive shaft and keyway. Refer to Section 6.

Section 3

Symptom: The auger does not start.

Possible Cause: The fuses are blown (I/O-verion R or earlier).

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 . Refer to Section 1.

Section 4

Symptom: The auger does not start.

Possible Cause: The auger motor capacitor is at fault.

Corrective Action:

Inspect the auger motor capacitor for damage. A damaged capacitor will usually have signs of deformation or bubbling on the capacitor casing.

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 microfarad as noted on the case for the capacitor.

Section 5

Symptom: The auger is noisy or oscillates between forward and reverse.

Possible Cause: There is an excessive chip build-up or an obstruction.

Corrective Action:

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

Section 6

Symptom: The chips do not exit the chip chute.

Possible Cause: The auger drive assembly has a mechanical issue. The auger is worn.

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 the installation of 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

Be aware: Many service and repair procedures should be done only by authorized personnel. The service technicians at your Haas Factory Outlet (HFO) have the training, experience, and are certified to do these tasks safely and correctly. You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes.

Danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not completely understand. Contact your Haas Factory Outlet (HFO) and schedule a service technician visit if you have any doubts about doing a procedure.

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