In an effort to streamline my work I have been upgrading some of my tools. I have purchased a Bluvac LTE to replace my Thermal Engineering unit and in side by side bench tests, have come to see that the BV is much more responsive than the TE. In the field, however, I have had some confusing results.
1. Could not get an existing coil and lineset below 1000 after clearing a piston restriction. Held pressure, no d-tek hits, system had correct charge.
2. Vac'ed a leaky coil down to 350 and held below 1000 for 30 min.
3. Vac'ed a new coil with old 15ft. lineset down to 58 and held in the 70s after 15 min.
Examples 2 and 3 occurred on the same job with 60 degree ODT and rain. I want a micron gauge I can believe in, just don't seem right.