Mitsubishi Electric PUHY-P250YNW-A Service Handbook page 257

[8-12 Parts Replacement Instructions ]
(9) Remove the four bolts holding the compressor down. (See Figure 9.)
The two bolts in the front are also holding down the metal sheets.
(10) Tilting the compressor will cause the refrigerant oil to leak. Seal the pipe where it was cut or removed at the brazed
section.
(11) After replacing the compressor, protect the surrounding components such as the control box, ACC, compressor cover,
and damper with a fire protection panel (e.g., recommended felt soaked in water), and perform brazing. (See Figure 10.)
*Perform brazing, referring to "Notes on replacing refrigerant circuit components (check valve, four-way valve, solenoid
valve, and LEV)" in 8-12-3.
(12) The recommended tightening torque for the compressor fixing bolts is 3.0 N·m.
(13) Re-place the compressor covers in the reverse order as they were removed.
Compressor fixing bolts
Compressor fixing
metal sheets and bolts
Figure 9
58
- chapter 8
Area to be brazed
Compressor
Figure 10
Damper
ACC
Fire protection panel
(Recommended felt soaked in water etc.)
Control box
BS_08_C