Preventative Maintenance Chart
Cause and Effect of Inadequate Preventative Maintenance
| Condition | Cause | Effect |
| Dirty Air Filters |
Restricted Evap Coil Plugged Motor Passages Dirty Blower Wheels Loss of Airflow Refrigerant Flooding |
Compressor Failure Bearing Failure Increased Energy Consumption Evap Motor Failure |
| Faulty Drive Belts |
Loss of Airflow Refrigerant Flooding Sheave Wear |
Compressor Failure Pulley Replacement Noise Evap Motor Failure |
| Dirty Motors | Overheating Windings |
Motor Component Failure Increased Electrical Consumption |
|
Burnt Contact Points |
"Single Phased” Components High Point Resistance |
Premature Component Failure Increased Electrical Consumption |
| Refrigerant Leaks |
Improper System Charge Safety Control Cycling Loss of Lubrication |
Compressor Failure ncreased Energy Consumption Decrease in System Capacity System Freeze-up |
| Plugged Drains | Water Build-up |
Flood over onto Ceiling Leaks onto Roof |
| Trash on Roof |
Unsafe Conditions Roof Damage |
Injuries Roof Leaks Roof Repairs |
| Missing/Loose Panels |
Conditioned Air Lost Water Infiltration |
Increased Energy Consumption Equipment Damage Rust and Corrosion |