| 摘要 |
PROBLEM TO BE SOLVED: To enhance an operability of maintenance by making a circuit board frame on which a circuit board is mounted replaceable from a main body without removing an electrical equipment box. SOLUTION: In a main body, a heat exchanger 2 is disposed at one side thereof, while an electrical equipment box 3 made of a metal plate is disposed at other end thereof. A circuit board 5 which is mounted on a circuit board frame 4 is disposed in the electrical equipment box. A pair of rails 3a which extend in a longitudinal direction are respectively mounted on an upper and lower faces of the electrical equipment box 3, while a pair of grooves 4a which are replaceably engaged with the corresponding rails 3a are mounted on the circuit board frame 4. These engaging rails 3a and grooves 4a constitute a pair of guide means. With such guide means, the circuit board frame 4 which mounts the circuit board thereon can be replaceably accommodated in the electrical equipment box 3. |
