![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjF33RMPDUwrSPJUPvTbvGH_KrD8xYpg7ojqYxoe1jE7hcXUSC6HE4zh6KByNRc7IQU0sRJFAJvDLnmM3tWlnXCMEjnzVgiObxunCSJm72IheKTwtzuHlsM6oyI1YcKrzUSLR5B_0gJhp0/s320/SNC00286.jpg)
this coldroom compressor breakdown. so start the job.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg4q6jYyBW37Ljuzru4KM3-w9WJi_yUy2I-SCvhX7e-Oo_2LzXlz7PFcL_9wqsdZFkdvyGpnxPeOM7rYTpNGFuh7KVnv5-RUyxmW30lS2kYe7sHYqyDP0kszu2dTBw3jLyKwgiYWUTA4DA/s320/SNC00287.jpg)
change the service valve first.y?bc the previous low quality got corrusion,the flare nut cannot be use.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwM2LK1oLxD0UUyKJOWNI57SvQk9W5BikbwwZAUdMSLzxn7rh9UM_9XdDi1NT_pqUb1RghOps9hthP5oa0pUkIyLDkH-onoVB1rVposeuFWymEixqxINcqwY-lcmw-QZq32KbccqQHDCM/s320/SNC00288.jpg)
this is my first time blazing,thanks Foo Gee give me some advise :)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjCs8CPE3xHtMg4GFstWsMn2ZsH7cdhUfxkmejsnTpSF5IfUBY5BHXDkjC1hFhJP471yN-vtB6SKIDVRAfT-d1t1dJFn0C-xlbzjjKvcOZJ47vD1MVaGzbpkw8YYoAGvifyVG9F_I3ejls/s320/SNC00290.jpg)
after that change the new compressor.n now,vacuum in progress! notice the top left, is a solenoid valve, i change that too,previous is a manual valve. but no work as pump down, just shut off if compress not run.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgt56PyLb-tVHTNFr_1MxNQBCDD9xY-0r_l06WiVpKHSwwp8un8GPVY1Q0A_zRsCr4BmAD8v0Hu_1ZuipmLQky9XkoxKXPvz8-gh-cGcqR5RzKyOVGuFOK27fbtSOEzwSJuFt76GjGVzTM/s320/SNC00293.jpg)
filling R22. estimate 5kg
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjsCEc2QcBxca0X19nNn61pZA5kKo2nrQ6vuVBCDqjTEoyDoJk8yalvtH2Xl_yRXv919r1w2n4wRnIAISSIvOQpw7hVTdajAP3NqT4mdlTELyyeFnlAk_nZL7gbIV-b5i90n31H05hbic4/s320/SNC00295.jpg)
the sightglass is clear! it full !
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlicKIpLeWjgdx5Hoqlwxz0Ipo4tcVBl6T3t81oC9OoQW1u_c5Ui5QLxq-23JqREyCoplAmu12o_3qSHSvG8aUx9KNEhEaShPq4mdwhIwTk0nGkicJL2pXdDYU0ukPjku3wSrG8kQCEpg/s320/SNC00294.jpg)
i change that high low control switch too.job done!.
ps. this compressor is MT32,bc is emergency case,i use back the same spec,no time to do research, it should use MT28.y? i refer the spec n found out the orifice n condenser is not large enough to handle this compressor(the liquid line very hot). the previous stupid technician think upgrade the compressor can upgrade the performance...damn..now it was not efficiency...