Panasonic CS-KS30NKU Technical & Service Manual

Contents

Panasonic CS-KS30NKU Technical & Service Manual Manual pdf 49 page image

Tubing precautionsRefrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarilycover the ends of the tubing with caps or tape prior to installation.Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.0315" (0.8 mm) in thickness, sinceair conditioners with R410A are subject to higher pressure than those using R22 and R407C.No addition of compressor oil for R410ANo additional charge of compressor oil is permitted.No use of refrigerant other than R410ANever use a refrigerant other than R410A.If refrigerant R410A is exposed to fireThrough welding, etc., toxic gas may be released when R410A refrigerant is exposed to fire. Therefore, be sureto provide ample ventilation during installation work.Caution in case of R410A leakCheck for possible leak points with the special leak detector for R410A. If a leak occurs inside the room,immediately provide thorough ventilation.ADFlare tool for R410AADConventional flare tool (R22)Spacer10-2. Checklist before ServicingUse a clutch-type flare tool for R410A or the conventional flare tool. Note that sizes of the resultant flares differbetween these two tools. Where a conventional flare tool is used, make sure to observe A Specification (amount ofextrusion) by using the flare spacer.Size of flareSpecification ADiameter of tube DDia.1/4" (6.35 mm)Dia.3/8" (9.52 mm)Dia.1/2" (12.7 mm)Dia.5/8" (15.88 mm)Flare tool for R410A Conventional flare tool (for R22)0 to 0.0196"(0 to 0.5 mm)0.0472"(1.2 mm)49