Mastercool Visual Inspection Sight Glass R1234yf

Features and Benefits:

• Allows user to visually inspect the refrigerant in any R1234yf system and identify excess dye, oil or debris
• Allows the user to extract a small portion of the refrigerant for actual visual inspection
• Leak free, ball valve controlled and will allow the refrigerant extracted for the visual inspection to be deposited back into the system



The condition of the refrigerant in your A/C system is an important factor in the proper operation of allcomponents and overall cooling efficiency. The only way to actually see the condition of the refrigerantin your vehicle�s A/C system is with the use of the Mastercool visual inspection sight glass. This unit can be used with a standard vacuum pump or with the vacuum function on your R/R/R machine. Easy to follow instructions will guide you through the use of either option.