• OZONE
  A form of oxygen(O₃) usually obtained by the discharge of electricity in air.
  (Added: 12-Sep-1999 Rating: 0 Votes: 0)

• PRESSURE SWITCH
  An electric switch activated by air pressure. This device detects air pressure exerted on it through a flexible tube connecting it to part of a water tub. When activated, this switch then opens an electrical circuit stopping further filling of the machine. May also be called a WATER PRESSURE SWITCH, WATER LEVEL CONTROL.
  (Added: 21-Sep-2001 Rating: 0 Votes: 0)

• PUMP
  A machine or device for moving or compressing fluids or gases.
  (Added: 21-Sep-2001 Rating: 0 Votes: 0)

• REFRIGERANT TYPES
  R12 (dichlorodifluoromethane) is typically used in household refrigerators, freezers and older car air conditioners.
  R22 (monochlorodifluoromethane) is used in window air conditioners.
  R134a (tetrafluoroethane) is now used in many domestic refrigerators, freezers, dehumidifiers and car air conditioners.
  (Added: 12-Sep-1999 Rating: 0 Votes: 0)

• REFRIGERANT
  A substance used in a refrigeration system to absorb heat in the evaporator coil, by means of a change of state from liquid to a gas, and to release its heat in the condenser as the substance returns from the gaseous state back into a liquid. Also see Freon.
  (Added: 12-Sep-1999 Rating: 0 Votes: 0)

• REFRIGERATOR
  An appliance designed to transfer heat from the interior of the cabinet to the exterior.
  (Added: 12-Sep-1999 Rating: 0 Votes: 0)

• RELAY
  An electro-mechanical switch that diverts the current when the flow is changed or when an external current is applied.
  (Added: 12-Sep-1999 Rating: 0 Votes: 0)

• SEALED SYSTEM
  This refers to the refrigeration cooling system. The refrigeration system consists of the evaporator (cooling) coil, condenser coil, compressor, connecting tubing and the refrigerant itself. On domestic models this system is hermetically sealed (welded shut) to avoid leakage and tampering.
  (Added: 20-Mar-2001 Rating: 0 Votes: 0)

• SILFOSS
  A silver-alloy solder containing 5-15% silver. It is used to weld copper to copper joints in refrigeration systems and able to withstand high pressures.
  (Added: 12-Sep-1999 Rating: 0 Votes: 0)

• SILVER SOLDER
  A silver-alloy solder with 35% or higher silver content. Used to withstand high refrigerant pressures in joints made between copper and steel tubing.
  (Added: 12-Sep-1999 Rating: 0 Votes: 0)

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