Langton Mechanical Systems & Services Inc.

Spring Start Up - Air Conditioning

1. Visually inspect system for oil and leaks
2. Clean and rinse Outdoor Condensing Unit – if required
3. Inspect ‘A-Coil’
4. Flush ‘A-Coil’ Drain Pan – as required
5. Inspect A/C Drainage System and test
6. Check Furnace Filter – replace as required
7. Inspect Fan Motor and Blower – clean if required
8. Inspect Condenser Fan Motor and Blade, lube - as required
9. Inspect Refrigeration Lines and Insulation
10. Seal or repair exposed Line Set inside with Wraptite
11. Inspect Low and High Voltage Wiring to A/C
12. Check Thermostat for Level, secure mounting and operation
13. Check Outdoor Disconnect Switch
14. Check A/C Contactor - clean Contacts if required
15. Re-level Condensing Unit – if required
16. Performance operation check of A/C
17. Check Refrigerant Pressures
18. Airflow check of System
19. Check Temperature Differential across ‘A-Coil’
20. Adjust Blower Speed for optimal cooling – if required
21. Secure and seal Valve Stem and service Port Caps – as required
22. Adjust Humidifier Damper to appropriate position

 

Fall Start Up - Furnace

1. Clean Furnace Cabinet
2. Vacuum Furnace Blower- if required
3. Clean Pilot Assembly - as required
4. Clean Burner and Burner Assembly – if required
5. Inspect Secondary Heat Exchanger – as required
6. Check Furnace Filter – replace as required
7. Inspect Furnace Drainage System and Test
8. Oil Motor – as required
9. Inspect Blower and Motor Bearings
10. Inspect Gas Line to Furnace
11. Inspect Low and High Voltage Wiring including Switch
12. Check Thermostat for level, secure mounting, check calibration and operation
13. Check Flame Rod and Hot Surface Ignitor – clean as required
14. Inspect Furnace Venting system
15. Check for cracks in Heat Exchanger
16. Check flame pattern
17. Test for Carbon Monoxide
18. Check temperature rise
19. Check High Limit
20. Adjust Humidifier Damper to appropriate position
21. Check Overall Furnace operation

 

Preventative Maintenance

1. All bearings are lubricated (excludes permanently lubricated type)
2. To ensure that vibration has not caused electrical components to work loose, our technicians inspect them. All wiring is inspected for chaffing or overheating from excessive power draws (faulty fan motors).
3. Belts are inspected for cracks, and if found necessary, they are replaced.
4. The heat exchangers are physically inspected for cracks or rust due to excessive heat or condensation. The burner nozzles are adjusted to ensure proper air to gas ratio, reduced condensation and efficient burning.
5. The supply and return temperatures, temperature differential across the heat exchanger temperatures are checked.
6. All major components , i.e. brackets, filter frames, fans etc., are tightened,
7. The starting and running amperage draws are compared with motor specifications to ensure free flow of water moisture reduction in the air stream.
8. All safety interlocks are cycled to ensure proper function and protection against high pressure, high temperature or low oil pressure.
9. All fan motors are inspected for bearing wear and belt alignment with the squirrel cage. The fan and cage are inspected for damage and proper balance.

 

Please Note: If any parts are found to be defective or of a shortened life expectancy, the owners will be advised of the cost of the parts and the labour repair (when/if exceeds manufactures warranty coverage).

Call Langton today to arrange your maintenance program at (905) 312-9644 Extension: 21