DISCHARGING, EVACUATING, CHARGING AND CHECKING — Point-7 Charging (Cont'd)
HA-25prose procedurePoint-7 — Charging (Cont'd)
IMPORTANT
The state of the bubbles in sight glass can only be used for checking whether the amount of charged refrigerant is small or not. The amount of charged refrigerant should be correctly judged by means of discharge pressure.
Charging finalisation
- 6After charging, be sure to install valve cap on service valve.
- 7Confirm that there are no leaks in system by checking with a leak detector.
IMPORTANT
When refrigerant charging is performed with a charging cylinder, charging station, or automatic charging equipment, engine off, charge only through high side, after specified refrigerant amount has entered the system, close high-pressure valve on gauge set. Start engine return to idle speed, operate A/C at maximum temperature setting, high blower. Observe sight glass to confirm complete charge.
CAUTION
Overcharging will result in increased high pressures, and reduced performance.