<h2 style="text-align:justify">KaVo MASTERmatic M10 L Troubleshooting: Bur, Spray, and Smoothness Problems Solved</h2>

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Most KaVo MASTERmatic M10 L problems come back to the bur, the spray channels, or the residue left by the last job.

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This guide helps you work through them in order.

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Safety first: never keep working with a bur that slips or wobbles.

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<h2 style="text-align:justify">Start With the Bur</h2>

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KaVo lists the M10 L for both handpiece and contra-angle burs. Make sure the bur is the right type, undamaged, and fully inserted.

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<h2 style="text-align:justify">Quick Guide</h2>

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<table align="center" cellspacing="0" style="border-collapse:collapse; width:900px">
	<thead>
		<tr>
			<td style="background-color:black; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:167px">
			Symptom
			</td>
			<td style="background-color:black; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:225px">
			Possible Cause
			</td>
			<td style="background-color:black; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:208px">
			Safe Check
			</td>
			<td style="background-color:black; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:1px solid black; vertical-align:top; width:180px">
			Stop When
			</td>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td style="background-color:#f2f2f2; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:167px">
			Bur slips
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:225px">
			Wrong bur, residue or chuck wear
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px">
			Clean; fresh correct bur
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:180px">
			Still slips
			</td>
		</tr>
		<tr>
			<td style="background-color:#f2f2f2; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:167px">
			Weak spray
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:225px">
			Clogged channels (no filter to change)
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px">
			KaVo nozzle needle
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:180px">
			Still weak
			</td>
		</tr>
		<tr>
			<td style="background-color:#f2f2f2; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:167px">
			Rough after extra-oral use
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:225px">
			Dust or residue
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px">
			Clean thoroughly; lubricate
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:180px">
			Persists
			</td>
		</tr>
		<tr>
			<td style="background-color:#f2f2f2; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:167px">
			Warm
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:225px">
			Low spray or wear
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px">
			Check spray
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:180px">
			Warm with good spray
			</td>
		</tr>
		<tr>
			<td style="background-color:#f2f2f2; border-bottom:1px solid black; border-left:1px solid black; border-right:1px solid black; border-top:none; vertical-align:top; width:167px">
			Dim light
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:225px">
			Motor or light path
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:208px">
			Another LUX motor
			</td>
			<td style="background-color:white; border-bottom:1px solid black; border-left:none; border-right:1px solid black; border-top:none; vertical-align:top; width:180px">
			Dim everywhere
			</td>
		</tr>
	</tbody>
</table>

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<h2 style="text-align:justify">Weak Spray With No Filter to Change</h2>

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Because KaVo does not list an exchangeable spray microfilter for the M10 L, go straight to the channels. KaVo&#39;s care tips recommend dedicated nozzle needles and warn against descaling agents.

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<h2 style="text-align:justify">Rough Running After Technical Work</h2>

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Dust from extra-oral work can affect smoothness. Clean thoroughly and lubricate with KaVo Spray or the QUATTROcare PLUS. If roughness remains, it needs a technician.

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<h2 style="text-align:justify">Still rough after a full clean? Send your M10 L to Repair.Dental.</h2>

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<h2 style="text-align:justify">Bur Will Not Hold</h2>

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Clean the chuck area, insert a fresh, correct bur fully, and test again. If it still slips, stop.

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<h2 style="text-align:justify">Light and Heat</h2>

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Test the light on another LUX motor. If the handpiece warms up despite good spray, take it out of service.

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<h2 style="text-align:justify">When to Stop</h2>

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<ul>
	<li>
	A bur that will not stay secure
	</li>
	<li>
	Roughness after cleaning and lubrication
	</li>
	<li>
	Heat with good spray
	</li>
</ul>

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<h2 style="text-align:justify">M10 L Troubleshooting FAQs</h2>

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<h2 style="text-align:justify">Why is the spray weak on my M10 L?</h2>

The channels may be clogged. KaVo does not list a replaceable filter for the M10 L, so clean the channels with KaVo&#39;s nozzle needles.

<h2 style="text-align:justify">&nbsp;</h2>

<h2 style="text-align:justify">Why is it rough after prosthesis work?</h2>

Dust or residue. Clean thoroughly and lubricate.

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Related Readings from RepairGuru :

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<ul>
	<li style="text-align: justify;"><a href="https://repair.dental/repairguru/lab-scanner/small-object-scanning-fixturing-methods">Small Object Scanning: Fixturing Methods</a></li>
	<li style="text-align: justify;"><a href="https://repair.dental/repairguru/lab-scanner/wax-up-scanning-material-reflectivity-issues">Wax-Up Scanning: Material Reflectivity Issues</a></li>
	<li style="text-align: justify;"><a href="https://repair.dental/repairguru/lab-scanner/impression-scanning-direct-vs-poured-model">Impression Scanning: Direct vs Poured Model</a></li>
</ul>

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KaVo M10 L bur slipping, spray weak, rough running or dim? Troubleshoot the MASTERmatic straight handpiece with safe, simple checks

KaVo MASTERmatic M10 L Troubleshooting | Repair.Dental