Medical compressor STMA series

for hospitalsscrollstationary

Product overview
STMA series skid-mounted oil-free scroll medical air compressor systems deliver continuous Class 0 medical-grade air. Manufactured to ISO 13485 and EN 61000, the systems integrate oil-free scroll compressors, optional refrigerated or desiccant dryers, a PLC touchscreen controller and a five-stage air treatment train on a single skid for compact installation in hospitals, clinics and healthcare facilities.

Filtration and control
The skid includes two or more oil-free scroll compressors managed by a PLC touchscreen. The five-stage filtration sequence comprises gas–water separation, particle removal, oil removal, high-precision filtration and sterilization. The skid integrates automatic drain valves, dryer(s), pressure sensors, an air receiver and optional dew point and carbon monoxide (CO) monitors. At least one standby compressor is included for redundancy and uninterrupted supply during maintenance.

Key specifications

• Certifications: ISO 13485, EN 61000
• Air quality: Class 0 oil-free medical air
• Continuous operation: 24/7 capability
• Maintenance interval: up to 8,000 hours at ≤ 0.8 MPa
• PLC touchscreen for sequence control and unit alternation
• Five-stage filtration and integrated refrigerated or desiccant dryers
• Optional dew point sensors and CO monitors for continuous air-quality monitoring
• Modbus RS485 communication for BMS integration and remote monitoring
• Includes minimum one standby unit for redundancy

Models and capacities
System — Model — Power (kW each) — Power (HP each) — Capacity (@100PSIG) (m3/min)
Duplex — STMA02D — 1.5 x 2 — 2 x 2 — 0.14
Duplex — STMA03D — 2.2 x 2 — 3 x 2 — 0.24
Duplex — STMA05D — 3.7 x 2 — 5 x 2 — 0.41
Duplex — STMA07D — 5.5 x 2 — 7.5 x 2 — 0.61
Duplex — STMA10D — 7.5 x 2 — 10 x 2 — 0.80
Triplex — STMA07T — 5.5 x 3 — 7.5 x 3 — 1.22
Triplex — STMA10T — 7.5 x 3 — 10 x 3 — 1.60
Quadplex — STMA07Q — 5.5 x 4 — 7.5 x 4 — 1.83
Quadplex — STMA10Q — 7.5 x 4 — 10 x 4 — 2.40

Applications, installation and maintenance

• Compact skid layout for flexible on-site placement
• Integrated components reduce installation time and simplify maintenance
• Redundant configurations maintain supply during service or failure
• Full performance testing and quality inspection before shipment

Technical details

• Standards: ISO 13485, EN 61000
• Air class: Class 0 oil-free
• Control: PLC touchscreen; Modbus RS485 supported
• Filtration: five-stage treatment including sterilization
• Dryers: refrigerated or desiccant options
• Monitoring: pressure, optional dew point and CO sensors
• Maintenance: designed for 24/7 operation; intervals up to 8,000 h at 0.8 MPa
• Mounting: skid-mounted with integrated drain valve and air receiver