Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

General System Repair Precautions

NOTICE: It is essential to tighten all tubing connections to the specified torque for the type and size of tube fitting. When tightening steel-to-aluminum connections, the torque specified for aluminum tubing must be used. Insufficient or excessive torque when tightening can result in loose joints or deformed joint parts. Either condition can result in refrigeration leakage and an inoperative air conditioning system. Refer to Specifications.