Haas Way Cover Troubleshooting Manual

Way Cover - How it Works and Troubleshooting Guide

LAST UPDATED: 11/30/2018

Way Cover - How it Works and Troubleshooting Guide

Introduction

Way covers keep chips and coolant away from the ballscrew, guiderails, and home switch. Machines can have three types
of way covers.

1. Telescopic Style: Telescopic way covers

use interlocking sheet metal sections with

wipers at the joints.

2. Shielded Style: Shielded way covers use

rubber straps to connect sheet metal

shield strips that overlaying each other.

3. Roll Shade Style - EC Machines: Roll

shade way covers use a tensioner to keep

the rubber sheet rolled up on a spool. The

spools rotate with tension to allow the

sheet to be pulled out and retracted back

in.

Page 1 of 7 pages

Way Cover - How it Works and Troubleshooting Guide

Symptom Table

SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION

The wipers are worn or
damaged.

The way covers are
damaged or worn.

Way covers "pop," or do
not move evenly.

Way cover has trouble
extendening or retracting.

The way covers are rusty or
make excessive noise.

Normal wear on wipers. Replace the wipers.

A part or other heavy object dropped
on the way cover.

Cutting abrasive or absorbent
materials.

The way covers are not lubricated
correctly.

Chip build-up around the base of roll
shade way covers.

Normal operation.

Way cover is full of chips. Perform normal machine maintenance.

There is a low coolant concentration. Increase the coolant concentration.

Way cover movement during dry
machine operation creates friction.

Remove the dents from the way cover.

Extra protection is necessary when you cut abrasive
or absorbent materials.

Clear debris from the base of the covers and adjust
the tension on the spring-loaded canisters.

These symptoms are normal during operation and do
not require troubleshooting.

Lube the way covers with oil.

The rail screws are loose. Tighten the loose rail screws.

The Wipers are Worn or Damaged

Symptom: The wipers are worn or damaged.

Possible Cause: Normal wear on wipers.

Corrective Action:

Replace the damaged wipers where possible.

Replace the damaged wipers on telescopic way
covers with the correct kit for your machine. Go
to PARTS.HAASCNC.COM.

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Way Cover - How it Works and Troubleshooting Guide

The Way Covers are Damaged or Worn

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