Mining Loaders Air Conditioning and HVAC Repairs

HVAC systems on mining loaders

Heavy-duty engine-driven compressor, cooling-pack condenser and a pressurised cab with high-capacity evaporator. High-load duty cycles at stockpiles and faces with dense dust and sustained engine bay heat.

Common faults we find on mining loaders

• Condenser and cooler pack fouling
• Compressor wear
• Pressurisation loss
• Refrigerant leaks

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

Short-interval cooling pack cleaning, filter replacement and quarterly pressure checks.