If system’s low side pressure is BELOW 65 PSI while running:
1. Shake can well. Make sure system is running and low side is below 65 psi.
2. Be sure Injection Valve handle (4300-89) is turned fully counter clockwise and attach valve to can.
3. Attach short charging hose to Injection Valve and other end to low side service port. Loosen valve slightly from can to purge air from hose and then re-tighten quickly.
4. With can upright, open valve by turning handle clockwise and hold above low side service port to dispense.
5. Allow approximately 1 minute for Rx-Acid Scavenger to completely enter the system.
6. Once product is dispensed, remove hose from system. Retain hose and valve for future installations and dispose of can properly.
If system’s low side pressure is ABOVE 65 PSI while running:
First pump the system down to achieve a low side pressure between 40 and 50 psi. Then, inject into the low side starting with step 2 above.