45
12) Braze the access, suction and discharge pipes (Do not change this order) with nitrogen
gas flowing at the pressure of 0.2 - 0.3 bar.
Always protect the compressor body around the suction pipe by using a damp cloth
to prevent the inner plastic parts from overheating. Do not braze with the compressor
body exceeding 120°C.
WARNING
13)
Install the new drier (See “4. DRIER”).
14) Check for leaks using nitrogen gas (10 bar) and soap bubbles.
15) Evacuate the system, and charge it with refrigerant. See the nameplate for the required
refrigerant charge (See “1. [d] EVACUATION AND RECHARGE”).
16) Connect the terminals to the compressor,
and replace the terminal cover in its
correct position.
17)
Refit the panels in their correct position.
18) Connect the power source.
4. DRIER
Always install a new drier every time the sealed refrigeration system is opened. Do
not replace the drier until after all other repair or replacement has been made.
IMPORTANT
1) Disconnect the power source.
2) Remove the front panel.
3) Remove the refrigerant from the unit and then any residual refrigerant still existing
in the unit to allow welding process. (See “2. WELDING REPAIR FOR R290
REFRIGERATION CIRCUIT”.).
4) Remove the drier using brazing equipment.
Plastic parts are here.
Prevent them from overheating.
