Preparing The Charging Cylinder; Final Leak Test - Electrolux Side by Side Refrigerator Service Manual

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Section E- Refrigeration System

Preparing The Charging Cylinder:

1. Make certain that hand shut-off valve to vacuum pump is closed.
2. Close high-side manifold gauge valve.
3. Set charging cylinder scale to pressure indicated on cylinder pressure gauge.
4. Observe refrigerant level in sight glass. Subtract amount to be charged into
system and note shut off point.
5. Open charging cylinder valve slowly and allow proper charge to enter
system.
6. As soon as refrigerant in sight glass has gone down to predetermined level,
close charging cylinder valve.
WARNING
DISCONNECT THE CHARGING CYLINDER HEATER AT THIS TIME TO PREVENT THE
CYLINDER PRESSURE FROM EXCEEDING ITS MAXIMUM LIMITS.
7. Allow system to sit for five minutes.
8. Turn on refrigerator compressor. Run compressor for a few minutes and
monitor system pressures.
9. When satisfied that the unit is operating correctly, clamp the high-side
process tube with the pinchoff tool while the unit is still running.
10. Slowly open the high-side manifold gauge valve to allow the compressor to
remove any refrigerant trapped in the high-side hose and the process
fitting.
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.

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.