Roof Bolters Air Conditioning and HVAC Repairs

HVAC systems on roof bolters

Where an enclosed cab is fitted, compact cooling with filtered ventilation and pressurisation appropriate to underground dust. Drilling overhead in confined workings produces fine dust at the operator position with very limited dilution airflow.

Common faults we find on roof bolters

• Rapid filter loading
• Ventilation fan wear
• Core fouling
• Vibration damage to fittings

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 filtration intervals with regular fan and seal inspection.