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The Water Cooler
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HVAC problem (undersized unit)
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<blockquote data-quote="_CY_" data-source="post: 2776332" data-attributes="member: 7629"><p>oppss did a typo .. so what ..</p><p></p><p>most consumers are not aware of sticking 410 TXV problems usually on 2-3 ton units with Copeland compressors, which are used by several brands. problems started early summer of 2014 .. usually this happens within a few months after startup. </p><p></p><p><a href="http://www.emersonclimate.com/en-us/Resources/Documents/Frozen-Coil-Update-8-28-14.pdf" target="_blank">bulletin from Emerson .. </a></p><p><a href="http://www.emersonclimate.com/en-us/Resources/Documents/Frozen-Coil-Update-8-28-14.pdf" target="_blank"></a></p><p><a href="https://dl.dropboxusercontent.com/u/19672761/UN-SVB020E-EN.pdf" target="_blank">from Trane's bulletin</a>: </p><p></p><p>For TXV’s that exhibit a low suction pressure (<95psig) and high superheat (>30°F) an </p><p>oil additive, MJ-X (CHM01005) needs to be added into the refrigerant system. This oil </p><p>additive has been shown to dissolve the sticky debris on the push pin and spring </p><p>assembly of the TXV, freeing up the movement of the push pin.</p></blockquote><p></p>
[QUOTE="_CY_, post: 2776332, member: 7629"] oppss did a typo .. so what .. most consumers are not aware of sticking 410 TXV problems usually on 2-3 ton units with Copeland compressors, which are used by several brands. problems started early summer of 2014 .. usually this happens within a few months after startup. [URL="http://www.emersonclimate.com/en-us/Resources/Documents/Frozen-Coil-Update-8-28-14.pdf"]bulletin from Emerson .. [/URL] [URL="https://dl.dropboxusercontent.com/u/19672761/UN-SVB020E-EN.pdf"]from Trane's bulletin[/URL]: For TXV’s that exhibit a low suction pressure (<95psig) and high superheat (>30°F) an oil additive, MJ-X (CHM01005) needs to be added into the refrigerant system. This oil additive has been shown to dissolve the sticky debris on the push pin and spring assembly of the TXV, freeing up the movement of the push pin. [/QUOTE]
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