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TM 10-4130-239-14
5-8. REFRIGERATION SYSTEM SERVICE - CHARGING (CONT)
NOTE
The system must be evacuated before charging. Use only refrigerant R- 12 to charge
the unit. If available, use recycled refrigerant.
1. If the service manifold is not still attached from the evacuation procedures attach it now.
2. Place refrigerant tank on a scale.
3. Open refrigerant tank valve.
4. With refrigerant tank on the scale, record value.
CAUTION
Never introduce liquid refrigerant into the low pressure suction service port.
5. Open the charging manifold valve and discharge service manifold valve (red gauge). Allow refrigerant to
enter until either the charged refrigerant cylinder weight has decreased by 3.75 lbs. ( 1.7 kg) or until system
pressure is equalized.
6. Close the refrigerant tank valve and all manifold valves.
7. Start water chiller (para 2-8b).
8. If the 3.75 lbs. ( 1.7 kg) full charge was obtained, skip step 9. If the system pressure equalized prior to
obtaining a full charge of 3.75 lbs ( 1.7 kg), proceed with the next step.
Change 1
5-17
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