Broad Overview
We completed two service visits to improve the ozone system. The main issue was low-quality oxygen from the concentrator, which was limiting performance, so we replaced the internal material and restored it to full operating condition. We also performed full maintenance on the air compressor and serviced key ozone system components, all of which are now working properly. On the next visit, we will replace a short section of air hose and add a label to ensure the concentrator stays in the correct setting.
Monarch Blvd – Internal Summary
Service visits: Dec 22–23, 2025 and Jan 12–13, 2026.
Application Background: The Monarch Blvd site is a lift station application. Ozone is used to control odors and to pre-treat wastewater before it reaches the main wastewater treatment plant (WWTP). This helps reduce odor issues and allows the WWTP to operate more efficiently.
Condition on arrival
System was running normally, but oxygen performance was degraded:
- O₂ purity ~35% on arrival.
- Low O₂ purity alarm setpoint was 25%, so the system was effectively allowed to keep running even with poor purity.
- AS-B oxygen concentrator control switch was set to AUTO (normally should be HAND), but it did not appear to be cycling off.
PM / repairs completed
Air compressor (34,612 hrs): completed full annual maintenance and several corrective items including belt, oil/filter/separator, intake and line filters, cabinet filter, minimum pressure check valve, pilot valve rebuild, HATS test, and condensate drain valve work. Condition is good following service.
Oxygen concentrator (34,859 hrs):
- Rebuilt feed/waste/EQ/check valves and replaced a suspect waste valve.
- Root issue was sieve bed condition (consistent with a plugged/failed RH bed), matching the ~35% purity seen.
- Temporary zeolite swap with used stock only improved purity marginally, but on the 2nd visit all zeolite was replaced with new and the unit returned to full spec.
Ozone generator cabinet / ozone side:
- Rebuilt O₂-in solenoid valve, rebuilt O₃-out MBV, verified O₃ leak sensor response OK, replaced SS check valve, replaced all Kynar fittings on ozone line, and verified telemetry remote access OK.
Status summary / conclusions
- Recommend checking compressor oil weekly (monthly if rarely adding).
- The oxygen concentrator was the limiting factor at this site; once sieve media was replaced, the system returned to spec.
- All annual PM items are complete and the system is currently running to full spec.
Remaining work (next visit)
- Replace ~12 ft of ½” air hose from tank to AS-B.
- Label O₂ concentrator for an easy reminder
For service and repair needs, contact us today! Our skilled team is willing to provide excellent service and custom recommendations for your applications.
