Twin and single screw compressor chillers built for reliability under continuous industrial duty.
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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
Compare oil differential pressure and oil level against the controller alarm history.
When to call us
Repeated oil trips are a bearing risk. Stop the machine and call before a rotor rebuild becomes necessary.
Likely causes
What to check
Command a manual load and unload and watch whether capacity actually tracks the command.
When to call us
If the valve doesn't move or the feedback doesn't change, we strip and calibrate the actuator on site.
Likely causes
What to check
Take vibration readings and oil analysis; listen for a change in the characteristic screw whine.
When to call us
Rising vibration or metal in oil means schedule a rebuild now — a seized rotor set is a far bigger job.
Likely causes
What to check
Measure superheat manually and compare it against the controller reading.
When to call us
If manual and controller readings differ, or superheat runs below 3 K, call before liquid reaches the rotors.
FAQ
Continuous-duty industrial screw plant needs quarterly inspections with an annual major service. Oil and filter intervals follow run hours — typically every 10,000–20,000 hours depending on the make.
In most cases yes. Bearings, seals, slide valve and rotor clearances can be restored at a fraction of new-unit cost, provided the rotors themselves aren't scored.
Yes, including hygiene-aware working, shutdown planning and documented service records for audit purposes.
Production-critical plant gets priority dispatch — same-day in Gauteng, and we can arrange after-hours attendance for shift operations.
We take samples on site and report acid number, moisture, viscosity and wear metals, with a clear recommendation on whether to change oil or investigate further.
We can arrange rental plant and the tie-in pipework so production keeps running while your machine is stripped.
Send nameplate photos and we quote within 24 hours.
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