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Mach 6 quick reference guide, Troubleshooting guide – Welch Allyn Mach 6 Quick Reference Guide - Quick Reference Guide User Manual

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MACH 6 Quick Reference Guide

K990291 Rev. C

Troubleshooting Guide

PROBLEM

SOLUTION

No powder or air from the
handpiece nozzle.

??

The handpiece is clogged. Use an orthowire to clear the nozzle. Disconnect

the handpiece from the handpiece hose and blow air through it.

Air from the handpiece but no
powder flow.

??

No Powder

??

Blown Pinch Tube

??

Clogged orifice plate. Empty the powder from the canister. With an ortho

wire, gently move the wire back and forth in the small holes in the bottom of the
Powder Canister.

??

Pinch Valve Piston stuck

Air and powder from the
handpiece flow for only a few
seconds then stop.

??

A pinch tube is sticking. Replace the pinch tube.

??

Pinch Valve Piston stuck

Air and powder flow
continuously from handpiece
even when in the Standby
mode.

??

Change pinch tube.

??

Shoe block cover has become scarred. Replace the shoe block cover.

Powder inside the unit
chassis.

??

Blown Pinch Tube

??

Hole in Powder tubing

??

Shoe block cover has become scarred. Replace the shoe block cover.

Unit Plugged into Water

Contact Welch Allyn Service center for unit Repair