Condition

Cause

Effect

Dirty
Air Filters

• Restricted Evaporator Coil
• Plugged Motor Passages
• Dirty Blower Wheels
• Loss of Air Flow
• Refrigerant Flooding

• Compressor Failure
• Bearing Failure
• Increased Energy Consumption
• Evaporator Motor Failure

Faulty
Drive Belts

• Loss of Air Flow
• Refrigerant Flooding
• Sheave Wear

• Compressor Failure
• Pulley Replacement
• Noise
• Evaporator Motor Failutre

Dirty
Motors

• Overheating of Windings

• Motor Component
• 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
• Increased 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