Underground Mining Trucks Air Conditioning and HVAC Repairs

HVAC systems on underground mining trucks

Low-profile cab cooling with filtered ventilation and compact condenser mounting. Heat build-up in confined workings, humidity and constant exposure to fine material in a restricted airflow environment.

Common faults we find on underground mining trucks

• Poor cooling in confined headings
• Blocked cores
• Drain blockage and water ingress
• Electrical corrosion from humidity

Diagnostic process

• Operator interview and fault confirmation with the machine running under load
• Visual inspection of condenser, belts, hoses, wiring and cabin filters
• High and low side pressure testing against the manufacturer's specification
• Electronic leak detection, dye tracing or nitrogen pressure testing where required
• Electrical fault finding on clutches, relays, pressure switches and control modules
• Written findings, parts list and repair recommendation before work proceeds

Repair approach

• Correct recovery of refrigerant before any component is opened
• Compressor, condenser, evaporator, drier, valve, blower and harness repairs or replacement
• System flushing and drier replacement after contamination or compressor failure
• Vacuum, leak hold test, charge by weight and oil balance to specification
• Function test across the full temperature range with cabin outlet readings recorded

Preventative maintenance recommendations

Core cleaning, drain clearing, connector protection and regular ventilation checks.