WAECO R744 Service Kit Installation Guide

WAECO R744 Service Kit

Safety instructions

Safety instructions: Make sure to always wear safety protections when you are working with refrigerant R744. Please note that this tool is for specialized and trained staff only.

• Take the set 8885100176
• Connect the LP coupler 8885400373 to the low pressure side of the hose and the HP 8885400374 to the high pressure side of the hose.
• Connect the adapter 8885400051 3/8-1/4 to the middle connection vac port of the manifold
• Use the adapter 8885400035 on the 8885400051 in case you are using a R134a machine to create vacuum (dismount Schrader valve if installed)
• Use the adapter 4440500008 on the 8885400051in case you are using a R1234yf machine to create vacuum (dismount Schrader valve if installed)
• Follow the car manufacturing instructions to open the electronic valves of the R744 system

Instruction For Use

• Close all valves of the manifold
  

• Connect the LP and HP couplers to the car
  

• Open LP and HP valves on the car (couplers)

• Open LP valve on the manifold

• Open very slowly the RE valve on the manifold and release the gas

• Wait until both scales of the manifold are at zero
  

• Connect the HP side of the A/C service machine with the manifold in order to create a vacuum
  
  
  

• Connect the manifold hose with the R744 bottle by using the adapter

• Place the R744 bottle on the scale

• Keep the valve of the bottle closed
  

• Open the VAC and RE valve on the manifold

• Turn on the machine for 30 minutes to create a vacuum in the A/C system
  

• Close all valves of the manifold
  

• Disconnect the hose of the machine from the manifold (VAC port)

• Disconnect the HP connection from the car (filling only via LP)
  

• Open the valve of the R744 bottle

• Set scale to zero
  

• Slowly open the RE valve of the manifold in order to fill the A/C system with the needed amount (in our example we need to fill 420 g, see sticker)

• Close the LP valve of the manifold when the filling is completed

• Close the bottle valve
  

• Remove the LP coupler from the car

• Release the rest pressure from the manifold via the vacuum port by opening LP+HP
  

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