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3
1.3 Servicing
• Always disconnect power to any appliance before attempting to service it. Always verify
that the power has been disconnected.
• If the unit has been running, use caution around the compressor, condenser and copper
tubing. These areas may be very hot.
• Use caution around the condenser wires and metal edges. These areas could be sharp.
• Refrigerant is under high pressure. Always evacuate any system before attempting to
open it.
• Reasonable care and safe work methods should be practiced when working on any
appliance.
• Never work with energized electrical equipment in wet or damp areas.
• Use an appropriate work area and location when performing repairs. Under counter
appliances are much easier to repair if they are set on a raised platform or workbench.
• Protective safety glasses are recommended.
• Any refrigerant, whether CFC, HCFC, or HFC (R-12, R-22, or R-134a), must be recovered.
Federal regulations prohibit the intentional venting or release of refrigerants during the
service repair or disposal of an appliance.
1.4 Basic Refrigeration Tools
The following list contains some of the tools required for basic refrigeration repairs:
1. Hoses with R-134a couplers (must meet standards for handling R-134a refrigerant)
2. Approved and certified recovery system for R-134a
3. Manifold gauge set or a short length of charging hose for R-134a
4. 25 pound charging cylinder with R-134a
5. Electronic refrigerant scale
6. Access valves or process kit
7. Pinch off tool
8. Small, fine grade, 3-corner file or appropriate cap tube cutting tool
9. Small and large tubing cutter
10. Oxy-Acetylene or Map-Pro torch
11. Swaging tools
12. Digital multi meter
13. Leak detection equipment
14. Standard hand tools (assorted Phillips and standard screwdrivers, sockets, Allen
wrenches, combination wrenches / adjustable wrenches, needle nose / slip joint pliers
etc.)
15. Rivet gun and assorted rivets
16. Drill motor with assorted drill bits and hex head sockets
17. Wire strippers and crimpers
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