Sinclair ASGE-18AI - Page 181

DC INVERTER U-MATCH AIR CONDITION MAINTENANCE
164
3. Remove the 4-way
valve
● Use gas welding to
heat the pipes
connected on the four
opennings of 4-way
valve. Then, pull them
out from 4-way valve.
● Before welding 4-way
valve, please record
the orientation of 4-way
valve and installing
position of each
opening.
4. Remove 4-way
valve
● Remove the old
4-way valve from the
unit.
5. Connect the new
4-way valve to the
pipe.
● Install the new 4-way
valve to correct
position.
●When welding the
4-way valve, please
wrap the valve body
with wet cloth, thus to
prevent the guide
inside the valve body
from burn. Also take
care to prevent any
water from flowing into
the pipe.
● Weld by charging
nitrogen, with the
nitrogen pressure kept
at 0.5±0.1kgf/c 󱚸
(relative pressure).