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[8-14 Solenoid Valve Block and Check Valve Replacement Instructions ]
(2) Check valve (CV4a, CV6a, CV8a, CV9a) replacement procedures
Remove the Solenoid valve block ASSY following "(1) Solenoid valve block ASSY (SV4a, SV4b, SV4d) replacement
1
procedures" on the previous page.
Debraze I-L parts (total 4 places), and remove the Check valve ASSY.
2
Replace the Check valve (CV4a, CV6a, CV8a, CV9a) to be serviced while it is removed from the unit.
3
Braze the pipes as they were according to the angle of the pipes on the figure next page
(Figure as viewed from point M).
Mount the Solenoid valve block ASSY, coil cover, and peripheral cables back in place according to "(1) Solenoid valve
4
block ASSY (SV4a, SV4b, SV4d) replacement procedures" on the previous page.
K (ø19.05)
2 3
L
2 3
(ø15.88)
* Precautions for replacing Check valve
• Be sure to perform no-oxidation brazing when brazing.
• Place a wet towel on the Check valve when heating pipes to keep the temperature of the valve from exceed-
ing 120ºC.
• After brazing, check the condition around the brazing. After confirming no leakage, evacuate the air inside.
• Perform carefully with the flame direction so that it does not burn cables and plates etc. in the unit.
• Remove the brazing part protecting heat exchanger not to be burn, and replace the service parts.
HWE1314A
* After removing Solenoid valve block ASSY
- 361 -
Part A
(Refer to the next page.)
GB
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