Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 359

[8-13 Parts Replacement Instructions (Outdoor Unit) ]
(20) Re-place the check valve assemblies (21S4a and 21S4b) whose pipes were replaced in step (17).
Four-way valve (21S4a)
Area to be brazed
Area to be brazed
(Applicable only to gas-liquid separator A)
Gas-liquid separator A (8 areas to be brazed.
See Figure 20-1.)
Area to be brazed
Four-way valve (21S4a)
Area to be
brazed
LEV2d
Replace the pipe that
was cut in step (14)
with the pipe included
with the check valve
block assembly.
Figure 20-1
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Figure 20
Four-way valve (21S4b)
Area to be
brazed
Check valve
block
Area to be brazed
Area to be brazed
Four-way valve (21S4b)
Area to be brazed
LEV2d
Area to be brazed
(Applicable only to gas-liquid separator B)
Area to be brazed
Gas-liquid separator B (8 areas to be brazed. See Figure
20-2.)
Area to be brazed
Four-way valve
(21S4a)
Area to be
brazed
LEV2d
Area to be brazed
Replace the pipe that
was cut in step (14)
with the pipe included
with the check valve
block assembly.
Figure 20-2
Four-way valve (21S4b)
Area to be brazed
Check valve block
BS_08_L