Simple but Reliable
1. What difference between AC-Dual and AC-Dual 20
AC-Daul 20 is newer model with more features such as printer, vacuum leak test and pressure sensor.
2. how long does the machine need to be maintenance
need to replace filter every 600 times operation including recovery and recharge
3. Is the machine able to do oil injection
Only PAG oil injection is woking on the machine. POE oil will be injected manually.
4. What's minimum and maximum refrigerant for each tank
the machine requires minimum 4 lb and maximum 22 lb in each tank. but we suggest not more than 15lb to leave space for recovery.