High-capacity centrifugal plant for towers, campuses and district cooling systems.
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Troubleshooting Guide
Tap a fault for likely causes, what to check on site, and when to call us out.
Likely causes
What to check
Log lift (condenser minus evaporator pressure) at the moment of surge and review vane position.
When to call us
Surging damages impellers and bearings. Call immediately — the fix is usually condenser-side or controls, not the compressor.
Likely causes
What to check
Compare evaporator saturation temperature with leaving chilled water and watch for a rising approach.
When to call us
Book a leak survey and charge correction before capacity drops and low-temp trips start.
Likely causes
What to check
Compare all three winding temperatures and check phase current balance at the starter.
When to call us
Any winding above alarm setpoint or more than 5% current imbalance needs immediate investigation.
Likely causes
What to check
Track daily purge pump-out counts and compare to the manufacturer's limit.
When to call us
Sustained high purge counts mean a live leak — call for a pressure and leak test.
FAQ
Quarterly inspection plus an annual major service is standard. Add oil and refrigerant analysis annually, and eddy current tube testing every 3–5 years.
Yes — impeller and diffuser inspection, bearing and seal replacement, motor and starter overhaul, alignment and vibration analysis, then a documented performance re-commission.
Yes. Surge is usually caused by excessive lift or a controls fault rather than a broken compressor, so we start with condenser water, tube cleanliness and vane or VFD control before opening the machine.
Plan on roughly one to two weeks for a major overhaul on large tonnage plant. We schedule around low-load seasons and can advise on temporary cooling.
Yes, including purge service, rupture disc replacement and the leak-tightness work these machines specifically need.
Gauteng is our home base, with regular work across Mpumalanga, North West, Free State and Limpopo.
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