Dive compressor Open

breathing airpistongear

Overview
Open is a heavy-duty, open-frame high-pressure compressor engineered for breathing air production and cylinder charging in industrial and diving environments. Designed for high flow and continuous operation with service-friendly access.

Pumping unit

• 4-stage high-pressure pumping unit, aluminum monoblock
• Forced lubrication via low-pressure gear pump
• Suction filter: 10 µm
• Pipes, fittings and nuts in AISI 316 stainless steel
• Intermediate condensate separators after 2nd and 3rd stages
• Minimum lubricating oil pressure switch and safety valves after each stage
• Special cast iron cylinders with low-roughness lapping; hardened steel 3rd stage with 6 cast-iron rings
• Forged aluminum connecting rods; forged steel crankshaft; heavy-duty roller bearings
• High-flow valves on stages 1–3; thrust pads on 2nd and 3rd stages to eliminate lateral piston forces
• Integrated Hyperfilter purification system

Electric motor
Three-phase electric motor available from 7.5 to 15 kW. Motor transmits motion to the pumping unit via belt drive.

Hyperfilter purification system

• High-capacity breathing air purification with two cartridges in series: first molecular sieve for moisture removal, second molecular sieve + activated carbon for oil vapors and contaminants
• Filtering capacity: 3,050 m³ with inlet air at 20°C and 200 bar
• Separator between 2nd and 3rd stages of purification to extract moisture

Electrical cabinet

• ON/OFF switch with motor protection
• Digital electronic pressure switch for automatic stop at final pressure
• Drainage of all interstage separators and final separator during operation
• Timer for automatic condensate drainage and integrated no-load startup
• Condensate collection tank 5 L with silencer (approx. 3 L usable)
• Interstage pressure gauges for stage diagnostics

Frame
Open vertical frame for easy maintenance. External oil level and drain, control console with interstage gauges, oil pressure gauge, internal temperature indicator, phase-sequence and oil shortage alarms, manual condensate drain and stop controls. Steel frame with scratch-resistant powder coating RAL 9005 black.

Standard equipment

• 4 cylinder connections selectable: DIN 232, DIN 300 or INT/YOKE 232 bar
• 4 whips of 1.2 m length
• Pressure holding valve; interstage control manometers
• Dual PED-certified Hyperfilter system
• Automatic condensate drain with conveying system into canister; condensate temperature shutoff
• Automatic rotation direction control; electronic pressure switch and oil-level shutdown
• Oil pump; frame color Black RAL 9005

Compatible accessories (selection)

• Remote charging panels (single/double pressure)
• Remote refill panels with lever taps
• CO SafeGuard carbon monoxide analyzer; ColTrimix
• Cylinder connections and adapters (DRV DIN 232 / DIN 300 / INT/YOKE 232 bar)
• Presec and multigas analysis systems (CO + CO2 + H2O); Tornado chiller; filling hoses

Technical specifications

• Model: Open
• Compressor type: 4-stage high-pressure pumping unit, open vertical frame
• Motor: 3-phase electric motor 7.5–15 kW
• Purification: Dual PED-certified Hyperfilter (molecular sieve + molecular sieve/activated carbon), 3,050 m³ @ 20°C, 200 bar
• Materials: AISI 316 for pipes/fittings/nuts; special cast iron cylinders; forged aluminum connecting rods; forged steel crankshaft
• Filtration/suction: 10 µm suction filter; intermediate condensate separators after 2nd and 3rd stages
• Safety & controls: safety valves after each stage; minimum oil pressure switch; electronic pressure switch; interstage gauges
• Condensate handling: automatic drains; condensate collection tank 5 L; conveying system to canister
• Connections: 4 cylinder connections selectable; 4 whips 1.2 m
• Intended use: breathing air production and cylinder charging for diving and industrial applications