Job card
MOMI-SULEP-MAI
Machine class
Mobile Plant Unit
Method
Surface Mining
Site area
Lephalale, Waterberg, Limpopo
Preventative Surface Mining Mobile Plant Unit HVAC Repairs in Lephalale
Mobile Plant working surface mining around Lephalale carry a specific thermal problem: semi-mobile plant operating for long campaigns in one pit position. Surface mining operations run wide, dispersed fleets across multiple pits, which makes mobile in-field HVAC capability more valuable than workshop-only capacity. Planned intent. Work is scheduled into existing service bays and shutdown windows so HVAC never becomes the reason a machine is standing.
What the hvac repairs covers
Electronic leak detection and nitrogen pressure testing
Compressor, condenser, evaporator and expansion valve replacement
Hose, fitting and bracket re-engineering for vibration duty
Vacuum, recharge and performance verification with delta-T records
Failure modes we expect on this machine
- Cabin units left off maintenance schedules entirely
- Vibration-induced refrigerant loss at plant frame joints
- Control kiosk over-temperature causing electronics faults
- Power supply instability damaging compressors and fans
Heat gap analysis · Lephalale
41°C
Ambient in pit
20°C delta to hold
21°C
Required cab temp
A system that has lost even 15% of its condenser capacity cannot bridge a 20°C gap. That is why fouled cores and marginal charge levels present as complete cooling failure on a Lephalale bench, and why we verify every repair with a measured delta-T under load rather than a gauge reading at idle.
Lephalale logistics
Our workshop and parts store is in Lephalale, so common compressors, driers, hoses and blower assemblies are held locally. In-pit units are dispatched from town, and most breakdowns are attended the same shift.
Large-scale open-cast coal, overburden stripping fleets, dragline support plant, power station coal handling and the contractor fleets that service them.
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