Daewoo frs20 Manual Do Utilizador

72

10-1. Summary of Heavy Repair

* Installation should be conducted in accordance with

the standard installation procedure. (Leave space of
more than 5 cm from the wall for compressor
compartment cooling fan mounted model.)

Transportation

and

installation

* Copper brush, Rag, Tool box

* Remove flux from the silver weld joints with soft 

brusher wet rag. (Flux may be the cause of corrosion
and leaks.)

*Clean tools and store them in a clean tool box

or in their place.

Compressor

compartment

and tools

arrangement

* Electronic Leak Detector,

Driver.

*  Check leak at weld joints.

Note :Do not use soapy water for check.

* Check cooling capacity

→ Check condenser manually to see if warm.
→ Check hot pipe manually to see if warm.
→ Check frost formation on the whole surface of the

evaporator.

Check

refrigerant leak

and cooling

capacity

* Bombe (mass cylinder),

refrigerant manifold gauge,
electronic scales, punching
off flier, gas welding machine

* Weigh and control the bombe in a vacuum conditions

with electronic scales and charge through compressor
inlet (Process tube).

* Charge while refrigerator operates).
* Weld carefully after inlet pinching.

Refrigerant

charging and

charging

inlet welding

* Vacuum pump 

, Manifold gauge.

* Evacuate for more than forty minutes after connecting

manifold gauge hose and vacuum pump to high (drier)
and low (compressor) pressure sides.

Vacuum

* Pipe Cutter, Gas welder,

N2 gas

* Confirm refrigerant (R-134a or R-600a) and oil for 

compressor and drier.

* Confirm N2 sealing and packing conditions before use.

Use good one for welding and assembly.

* Weld under nitrogen gas atmosphere.
* Repair in a clean and dry place.

Parts

replacement

and welding

* Nipper, side cutters

* Cut charging pipe ends (Comp. & Dryer) and

discharge refrigerant from drier and compressor.

Remove 

refrigerant

Residuals