Charging Station

A vacuum pump is built into the charging station and is designed to withstand repeated and prolonged use without damage. Complete moisture removal from the system is possible only with a vacuum pump constructed for that purpose.
The system refrigerant must be completely recovered before it can be evacuated.
Damage to the vacuum pump will result if pressurized refrigerant is allowed to enter.
1. Connect hose to vacuum pump if system refrigerant was recovered through charging station.
2. Open charging station low side gauge hand valve.
3. Connect station to 110V current.
4. Activate vacuum pump according to station manufacturer's instructions.
5. Evacuate system with vacuum pump until low pressure gauge reads at least 28 inches Hg vacuum. Continue evacuating system for an additional 15 minutes for routine system service or 20-30 minutes if any components have been replaced.
6. Close low side gauge hand valve, then turn off vacuum pump.
7. Evaluate system's ability to hold vacuum. Observe low side gauge and ensure needle does not rise at a rate exceeding one inch Hg vacuum every four to five minutes. If low side gauge indication rises at too rapid a rate, supply a partial charge and leak test, then evacuate system again.
8. If system holds vacuum, charge with refrigerant.