Charging mystery unit

Been asked to repair a hydraulic fluid cooler. Three phase 200 volt compressor, R-22 unit. Looks like about same size as about 12,000 BTU per hour residential compressor. No name plate was found, with charge weight. The evaporator came apart, and I made some tubing to compensate for that.
How to meter in the correct charge? Suction pressure? Superheat? Amp draw?
Christopher A. Young Learn more about Jesus www.lds.org .
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Site Timeline

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.