Precautions

Pipe And Hose Connection Torque Chart:

SERVICE PROCEDURES
Before attempting any service which requires opening of refrigerant lines or components, the person doing the work should be thoroughly familiar with the informaton under HANDLING REFRIGERANT-12, HANDLING REFRIGERANT LINES AND FITTINGS AND MAINTAINING CHEMICAL STABILITY IN THE REFRIGERATION SYSTEM. Very carefully follow the DISCHARGING, ADDING OIL, EVACUATING AND CHARGING PROCEDURES for the unit being serviced.

Assembly
Sealing caps should be removed from subassemblies just prior to making connections for final assembly. Use a small amount of clean 525 viscosity refrigerant oil on all tube and hose joints. Always use new 0-rings dipped in the clean 525 viscosity refrigerant oil when assembling joints. The oil will aid in assembly and help provide a leak-proof joint. When tightening joints, use a second wrench to hold the stationary part of the connection so that a solid feel can be attained. This will indicate proper assembly.

Torque
Tighten all tubing connections as shown in torque chart. Insufficient or excessive torque when tightening can result in loose joints or deformed joint parts. Either condition can result in refrigerant leakage.