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Expert Air Compressor Repair Services in South Wales and the West
Control Gear offers rapid, compliant air compressor repair services to restore system pressure and maintain production uptime. Compressed air is considered the fourth utility in UK industry, and a compressor failure can immediately halt production.
Our repairs ensure your system operates safely, in compliance with PSSR 2000, and helps reduce energy costs.
How Do We Diagnose Common Compressor Faults?
Our engineers follow a strict diagnostic lifecycle. We identify the root cause, explain the impact on your business, and implement a permanent solution.
Why is the compressor not building pressure?
Problem: Pressure failures are typically caused by a stuck inlet valve, solenoid failure, or massive downstream leaks. A stuck Minimum Pressure Valve (MPV) prevents the system from building internal pressure.
Impact: This causes unstable pressure and forces production to stop immediately.
Solution: We rebuild the MPV or replace the loading solenoid to restore system pressure.

Why is the compressor overheating?
Problem: Compressors overheat due to low oil levels, blocked cooler matrices, or thermal valve failures. Blocked cabinet filters cause VSD drives to overheat.
Impact: This triggers emergency shutdowns and halts operations, especially during summer months.
Solution: We clean coolers and replace thermal elements to manage operating temperatures.

Why is there oil in the air lines?
Problem: Oil carryover is usually caused by a saturated separator element or a blocked scavenge line. A failed oil stop valve allows oil to pass into the network.
Impact: This contaminates downstream products and damages pneumatic tools.
Solution: We replace the separator with Genuine OEM parts to stop oil migration.

Do We Repair Non-Atlas Copco Brands?
Yes, we repair all major brands. This allows us to support facilities with mixed equipment fleets.
We utilise deep knowledge of the Elektronikon control system. We diagnose specific fault codes like 1101 (CAN-bus communication errors). We resolve VSD faults, including motor bearing fluting caused by electrical discharge.
- Ingersoll Rand: We repair HPM Nirvana drive faults. We replace leaking O-ring face seals (ORFS) to prevent fluid loss.
- HPC Kaeser: We diagnose Sigma Control sensor faults. We possess specific tools for belt tensioner repairs.
- CompAir/Gardner Denver: We support Delcos Pro and Delcos 3100 controllers. We replace failed loading solenoid blocks.

50 Years Experience
Why Work With Us?
- One of the largest independent Fluid Power companies operating in the United Kingdom
- Atlas Copco Premier Distributors
- Diverse Market Coverage including 9 key specialisms
Get in touch
Contact Control Gear for Immediate Repair Support
Do not let a broken compressor halt your production. Our engineers provide 24/7 breakdown cover across South Wales and the West. We aim for a first-time fix using stocked service vans and Genuine OEM parts. Call our Pontypridd headquarters or request a diagnostic visit today.
- Visit us Heol Groeswen, Treforest Industrial Estate, Pontypridd, Rhondda Cynon Taff, CF37 5YF
- Call us 01443 843126
- Email us enquiries@control-gear.com
Mon–Fri · 09:00–17:00
24/7 emergency call-out available