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ABK

AE 60 400/30

Starting Air Compressor · Compressors

Class-certified type (DNV register) · technical data sheet not yet verified​‌​⁠​​‌‌⁠⁠​‌​‌​‌‌⁠‌‌
Specifications

Technical data.reference — unverified

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Compressor TypeStarting Air Compressor
Pressure (bar)30
Capacity (Nm³/h)400
Stages3
Inspection

Inspector Detail

Common issues

  • Suction/discharge valve reed wear or breakage causing reduced capacity or overheating
  • Piston ring wear leading to blow-by and reduced final-stage pressure
  • Intercooler/aftercooler fouling raising stage discharge temperatures
  • Condensate drain fouling or failure (automatic or manual), allowing water carry-over into the air system
  • Crankcase oil contamination from water ingress or worn rings
  • Safety/relief valve sticking or failing to lift at set pressure
  • Air filter fouling reducing suction and accelerating first-stage wear

Inspection checklist

  • Check each stage's discharge temperature and pressure against baseline
  • Inspect suction/discharge valves for wear, carbon deposits, or broken reeds
  • Check condensate drains at each stage for correct operation
  • Test safety/relief valves at set pressure
  • Check crankcase oil level and colour, and take a sample for water/wear metal content
  • Inspect intercooler/aftercooler tubes for fouling and pressure drop
  • Inspect the air receiver for internal corrosion and confirm its relief valve/drain function
  • Check foundation bolts and drive coupling/belt alignment

Service intervals

Oil changetypically every 500-1,000 running hours or per ABK's maintenance schedule, whichever comes first
Valve inspection/overhaultypically every 1,000-2,000 running hours depending on duty cycle
Air filter renewalevery 250-500 running hours or on condition, more often in dusty engine rooms
Intercooler/aftercooler cleaningevery 2,000-4,000 hours or on a rising discharge temperature trend
Safety valve testingannually, or per class requirement for starting air systems

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Typical wear limits

Final stage discharge pressure at rated capacitya shortfall of more than roughly 10-15% below nameplate rating at otherwise normal running conditions typically indicates valve or ring wear - compare to this unit's own commissioning baseline, not an absolute figure
Piston ring gaptypically renewed once the gap exceeds roughly 2-3x the as-new fitted gap for reciprocating air compressors of this class - confirm ABK's specific limit for the AE 60

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

  • Suction and discharge valve reed sets (per stage)
  • Piston ring set (per stage)
  • Intercooler/aftercooler gasket set
  • Automatic condensate drain valve/solenoid
  • Safety relief valve (per stage, correct set pressure)
  • Air filter element

Safety

  • Stored high-pressure air (30 bar) - always isolate and vent before opening any stage or fitting
  • Air receiver explosion risk if relief valves are not tested and maintained - never operate with a bypassed or seized relief valve
  • Hot compressor stages and piping - burn hazard during running inspections
  • Oil-in-air carryover is a fire/explosion hazard downstream at the main engine's starting air system

Class survey

Starting air compressors and receivers are included in the machinery survey scope. Class checks relief valve test certificates, receiver internal/external examination records, and starting air line non-return/isolating valve condition, since system integrity is safety-critical for engine starting reliability.

Estimated lifetime: Reciprocating starting air compressors of this class typically run 20,000-30,000+ hours between major overhauls with routine valve and ring maintenance, given clean intake air and proper condensate drainage. Actual life depends heavily on duty cycle and air quality.

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