|
Work Performed |
Benefits |
1. |
Check thermostat |
Improperly calibrated thermostat affects comfort and operating costs. |
2. |
Start unit |
Verify unit is operational before tune-up takes place. |
3. |
Check return air filter |
Restricted filter causes unit to waste energy and shorten compressor life. |
4. |
Routine cleaning of evaporator coil** |
Dirty evaporator coil decreases efficiency and can lead to compressor failure. |
5. |
Clean condensate drain** |
A plugged condensate drain can cause expensive water damage. |
6. |
Check condensate pan and fittings for leaks |
A cracked pan or loose fittings can cause expensive water damage. |
7. |
Check blower wheel |
Dirty blowers reduce air flow; increases operating costs and can lead to compressor failure. |
8. |
Check blower motor stability |
Dirty motors are less efficient and will fail sooner. |
9. |
Check blower motor amp draw |
Ensures optimum performance; protects equipment. |
10. |
Lube motors & bearings |
Improperly lubricated rotating equipment will eventually fail. |
11. |
Check belt, pulleys and alignment |
Avoids costly service calls, saves money on utility costs. |
12. |
Check total electrical consumption |
Ensures optimum performance; protects equipment. |
13. |
Examine parts for visible wear |
Avoids costly service calls. |
14. |
Check and secure all panels |
New systems have a blower door safety and will not operate if door is not properly in place. |
15. |
Examine all electrical connections |
Extends life of system; ensures safety. |
16. |
Check unit disconnect switch |
Worn, overheated disconnect blows fuses; potentially dangerous. |
17. |
Check temperature difference across coil |
Temperature difference indicates production and capacity of unit. Also affects comfort level. |
18. |
Remove debris around outside unit |
Promotes Efficiency. Prevents damage to equipment. |
19. |
Routine cleaning of condenser coil |
Dirty condenser coils raises refrigerant pressures increasing electrical costs. |
20. |
Check condenser fan motor stability |
Prevents costly service calls. |
21. |
Check condenser fan motor amp draw |
Ensures optimum performance; protects equipment. |
22. |
Check condenser fan blades for vibration |
Prevents damage to unit and costly service calls. |
23. |
Check reversing valve |
Improperly operating reversing valve wastes energy. |
24. |
Check crankcase heater |
Crankcase heaters that do not work lead to compressor failure. |
25. |
Check relays & contactors |
Worn contactors and loose connections can lead to motor and compressor failure. |
26. |
Check capacitors |
Bad capacitors lead to compressor and motor failure. |
27. |
Check all safety devices |
Keeps unit in safe operating condition. |
28. |
Test time delay |
Prevents unit from starting under load when power has been temporary interrupted. |
29. |
Check defrost assembly |
A defrost timer that does not work correctly causes loss of heat and can shorten life of compressor. |
30. |
Check all controls |
Extends the life, saves money, and prevents failure. |
31. |
Test refrigeration metering device |
Blockage or improper operations of metering device reduces cooling capacity, increases fuel costs, and shortens system life. |
32. |
Measure operating pressures with gauges |
Improper refrigerant charge can cause compressor shut down. |
33. |
Check noise and vibration levels |
Increases comfort & extends life of equipment. |
34. |
Check compressor amp draw |
Ensures optimum performance; protects equipment. |
35. |
Make final operations test |
To ensure optimum performance. |
36. |
Wax outdoor unit** |
For weather protection and extended life. |
37. |
Record system operation |
For Home owner's information and records. |
38. |
Explanation of tune-up results |
Explanation of work performed in tune-up and results. |
39. |
Advise improvements as needed |
To allow you to gauge effectiveness, efficiency and potential need for repair or replacement. |
40. |
Conclude Transaction |
Answer questions; collect for work performed, signature(s) on invoice, leave customer copy of tune-up, and make appointment for any additional work required. |