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4 - VR/GM - Haas Spindle Chiller

Haas Spindle Chiller - Operator's/Service Manual


  • 1 - Haas Spindle Chiller - Introduction
  • 2 - DC-Series - Haas Spindle Chiller
  • 3 - HDC-3-5AX - Haas Spindle Chiller
  • 4 - VR/GM - Haas Spindle Chiller

Go To :

  • VR/GM - Haas Spindle Chiller Operation
  • VR/GM - Haas Spindle Chiller Maintenance
  • VR/GM - Haas Spindle Chiller Troubleshooting

4.1 VR/GM - Haas Spindle Chiller Operation

Introduction

The VR Series comes with a spindle chiller unit located on the column on the back of the machine. The GM Series comes with a spindle chiller unit located on the back of the machine above the control cabinet. This spindle chiller helps regulate the temperature of the spindle. This section provides operation information specific to the spindle chiller.

Check the Spindle Chiller

Check the spindle chiller for any air bubbles in the lines by running the spindle. 

Then, check the flow sensor [1] and make sure the machine does not receive any alarms. 

If any alarms or issues arise with the spindle chiller please visit the H-5AX Spindle Head Troubleshooting Guide for more information. 

4.2 VR/GM - Haas Spindle Chiller Maintenance

Spindle Chiller Maintenance

Spindle chiller fill cap [1].

The chiller does not need regular maintenance. The control gives a message when the coolant level in the chiller gets low.

When you get this message, remove the chiller cap [1] and top off the chiller with a 50/50 distilled water/glycol mixture (automotive antifreeze).

 Note: See the VR/GM troubleshooting guide for more information about the spindle chiller fluid.

 

4.3 VR/GM - Haas Spindle Chiller Troubleshooting

Symptoms Table

Symptom

Probable Cause

Solution

Alarm 130 Tool Unclamp Tool Holder is not properly seated in the taper Verify double arm alignment to the spindle, refer to Side-Mount Tool Changer - HSK - Double Arm - Replacement - NGC
 Head Alignment Refer to the following procedures for their respective machines: Geometry Guide - VR Series / GM-2-5AX Head Alignment - Procedure
 A63 Tool Holder orientation Refer to the HSK tool loading section in the HSK - Spindle - Troubleshooting Guide
Air Pressure

Verify that the TRP pressure is set to 145 PSI in the lube panel cabinet. Verify that the Spindle Purge pressure is set to 45 PSI.

Verify customer’s air lines are not contaminated (moisture) 

Draw Bar push out / switch adjustment Verify the clamping cone push out before adjusting TRP sensors.  See H-5AX Sensor Wiring section for images
Alarm 134 Tool Unclamp  Fualt Spindle Air Solenoid has the .040 ORIFICE installed in the wrong location

Reconfigure the Air Solenoid fitting, Move the restrictor orifice from before 90° fitting to before the Tee Brass fitting. (see Spindle Air Solenoid)
Note: No parts required for corrective action.

HSG-A 02/16/2023

Tool Sticking in the Taper

Incorrect push out

Air escaping from the Air Regulator Knob

Spindle was replaced and spindle load is very high. Commanded RPM are incorrect as well. Motor may have been wired incorrectly during replacement. 

Check the motor configuration to see if the motor is wired correctly. See Motor Wiring section for more details.

If the spindle was not replaced and the machine is experiencing this issue please follow the VECTOR DRIVE TROUBLESHOOTING GUIDE for further troubleshooting.

Spindle noise is present while running the spindle at lower RPM's.  Damaged cables or missing ferrite filters can cause this issue. 

Troubleshoot the vector drive using the VECTOR DRIVE TROUBLESHOOTING GUIDE, verify all feedback cables at the maincon have ferrite filters, verify cables in the spindle are in good condition (see Connection port section for more details, verify the spindle power cable is tight, verify all connections to the signal distribution junction are tight. See Connection Locations section for reference. 

If the issue persists contact Haas Service for further instructions. 

Alarm 4.9003 Insuficient Spindle Coolant Chiller Flow occurs Flow sensor on the spindle chiller may need to be adjusted to read correct flow.  Adjust the flow sensor using the slotted holes on the sensor, move the sensor towards the motor side until the bit changes. The slots on the sensor might not be enough adjustment, if so open the slots further to get the adjustment needed. Contact Haas Service if this issue continues to persist. 
Air may be introduced into the system via chiller lines not being fully plugged into the manifold or seals that are broken and sucking in air.  Replace any broken seals and make sure the lines are fully plugged into the manifold. Prime the lines and make sure the no air bubbles are present in the lines. 
Coolant tank chiller issues with less than normal pressure or an over-heated pump

The correct placement of the 3” return tube. 

A 6’’ tube (58-3728) being used rather than the 3” tube (58-0742). The 6” tube was bottoming out and cause a major flow restriction. See Coolant Tank Chiller section for images

Alarm 4.103  S (SPINDLE) AXIS SERVO ERROR TOO LARGE Control showing 1000 rpms on the spindle speed with the spindle stopped. Verify the spindle encoder or enocder cable is not shorted to ground. See Encoder Connection section for more details.
Alarm 4.9932  S (SPINDLE) SPINDLE STALLED 
Alarm 4.9922  S (SPINDLE) MOTION CHANNEL FAULT DETECTED 
Alarm 4.182  S (SPINDLE) AXIS ENCODER CABLE FAULT
Alarm 4.224  S (SPINDLE) AXIS TRANSTION FAULT
Alarm 7.217 C (5th AXIS) AXIS PHASING ERROR
Alarm 7.9959 C (5th AXIS) SERIAL ENCODER DISCONNECT
Alarm 6.103  B (4TH Axis) AXIS SERVO ERROR TOO LARGE

Brake does not disengage before commanding a movement resulting in high loads on the axis.

Brake air hoses are not connected properly.

Check the brake manifold and make sure the air lines are routed to the correct port. See Brake Manifold section for more details. 

Verify parameter 76 Low Air Pressure Delay has not been changed (30.000 sec) and verify proper air to machine. 

Alarm 7.103  C (5TH Axis) AXIS SERVO ERROR TOO LARGE
Concentricity of the head is not staying within specification after being established during alignment.  The incorrect washer is installed on the C-axis mounting surface. {icon:fa fa-file-text} NOTE: Haas is requiring that the serrated/small steel washers be replaced with hardened thick washers. Order part number 93-3769 HSD C-AXIS MOUNTING HARDWARE SVC KIT for the proper hardened washers and longer bolts. 

Coolant Tank Chiller

1

The 6” return tube is bottoming out and cause a major flow restriction.

2

Corrective Action:  Install a 3" return tube (58-0742)

H-5AX Spindle Chiller Fluid

Spindle Chiller tank uses a 50/50 mix of DOWFROST HD INHIBITED PROPYLENE GLYCOL (Not Sold by Haas) and deionized water. The tank capacity is 5 gallons.  Any over the counter Propylene Glycol product can be used, but will require to flush out the system prior to fillling. 

IMPORTANT: Mix the glycol and deionized water outside of the chiller tank before adding to the mixture already in the tank.

Warning:  Don’t mix with Ethylene-glycol product.  If Ethylene-glycol is the only substitute to be found then the system must be flushed prior to filling.

Warning: Do not mix the glycol product with anything other than deionized water.

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