Welding - Sunbeam 20060328 Service Manual

WELDINGS
σCAUTION Use the corresponding approved safety glasses when working with a pressurized equipment or system.
When using any type of gas-operated torch, hold back a chemical dust fire extinguisher.
1. All the joints to be welded must wedge duly. The space between tubes to be welded should be from 0,02 to 0,15mm.
Measuring these spaces is not practical; however, insertion cannot be too fastened nor too separated. The tubing
joints must be one diameter and a half from the inserting tube except the re – conductor tubes that must be inserted
38mm (1.5") as a minimum.
2. Clean the joints surface with steel fine wool or preferably with emeril cloth No. 23 or "Scotch-Brite".
3. Use welding 35% silver with welding compound when surfaces to be joined are copper – iron surfaces. If surfaces to
be joined are copper-copper, welding 5% silver should be used without welding compound.
4. Line up tubing avoiding joint tension. Don't move the tubing while welding is solidified.
σCAUTION
Use damp clothes during the heat application to prevent transmission to surfaces other than the welded
joint. Use a ceramic plate as a heat deflector to avoid the flame contact with flammable material and painted
surfaces.
5. Use an adequate capacity torch so that the joint can heat rapidly with a minimum shifting from the heat to other
points. Use good quality silver welding.
6. Clean connections thoroughly. If tubing has been cleaned and applied welding compound adequately, the welding
will flow easily. Don't use much welding, only the necessary to achieve good penetration.
Let the joint dry and wash the external part with water to take away the welding compound.
REFRIGERATION SYSTEMS
The refrigerator basic components are: compressor, condenser, evaporator, capillary tube, suction line and drying filter.
Illustrations C2, C3-A and C3-B show the system layout and the refrigerant flow in the refrigeration system.
EVAPORATOR
ANTICONDENSATION
FILTER
CAPILLARY TUBE
COMPRESSOR
Figure C2. Door models (manual defrosting door).
PAGE. C2