| 62 / | HD | REFRIGERATION |
| 132 | DF | AUTOMATIC CONTROL {19} |
| 141 | DF | .~ Of closed system sorbent type {2} |
| 142 | DF | .~.~ Discontinuous operation of refrigerant or sorbent container unit {1} |
| 143 | ![]() | .~.~.~ Of intermittent generator-sorber unit {2} |
| 144 | DF | .~.~.~.~> Plural unit sequence or alternation {1} |
| 146 | DF | .~.~.~.~> Of cooling fluid {1} |