TM
9-4120-385-14
7.
Carefully loosen the charging hose to release trapped pressure.
D i s c o n n e c t the charging line and install valve cap on the low pressure service
8.
valve.
9.
Continue to operate unit for 15 minutes and recheck sight glass for bubbles. If
bubbles are present, add additional refrigerant Refer to Subparagraph c. below.
c. CHARGING PROCEDURE--ADD REFRIGERANT TO A PARTIALLY CHARGED
SYSTEM.
Follow setup procedures described in subparagraph a. above.
1.
2. Open the low pressure service valve to full open position.
3.
Turn
the air conditioner ON.
4.
SLOWLY open the refrigerant tank valve one full turn.
5.
Continue to operate unit while charging the system.
6.
Continuously
observe the sight glass. When bubbles no longer appear in the
sight glass, the system is charged.
7. Close the refrigerant tank valve.
8.
Close the low pressure (suction) service valve.
9.
Carefully loosen the charging hose to release trapped pressure.
10. Disconnect the charging hose and install valve cap on low pressure service valve.
11. Reinstall access cover and secure with two screws.
NOTE
If frequent servicing is required, perform a leak test. Refer to
5-9. REFRIGERANT CHARGING WITH LIQUID
CAUTION
Do not attempt to charge liquid refrigerant into the suction (low
pressure) line. Damage to the compressor may result.
5-30