30
11. Close both of the manifold gauge valves. If
the high-side gauge reading rises, the pinch-
off must be corrected before proceeding.
12. Remove the high-side process tube adaptor
and solder the process tube closed.
13. Clamp the low-side process tube with the
pinch-off tool while the unit is running.
Remove the low-side process tube adaptor
and solder the process tube closed.
14. Check the process tubes for refrigerant leaks.
Hot Tube
Evaporator
Condenser
Compressor
2 Stage
Vacuum Pump
Heated
Charging
Cylinder
Process Tube
Adapters
Filter Drier
Pressure
Gauge
Compound
Gauge
Gauge
Manifold
T-Fitting
Final Leak Test
1. With the refrigerator turned OFF leak test all
low-side system components.
2. Turn the unit ON and run until the condenser
is warm. Leak test the high-side system
components.
D - Refrigeration System
Figure E2
