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Carrier Marine & Offshore

30XBE / 30XBP - AquaForce® Fixed-Speed Air-Cooled Screw Chiller

Chiller Unit · Air Conditioning

Technical data from manufacturer or class sources · not yet verified by a person​‍‌‌​‍​‍‍​​‍⁠⁠​‌‍‍‌⁠

Carrier Marine & Offshore 30XBE / 30XBP - AquaForce® Fixed-Speed Air-Cooled Screw Chiller — Fixed-speed air-cooled screw chiller for marine and offshore; 30XBP premium with EC fans; extended capacity range up to 1,700 kW.

Specifications

Technical data.reference — unverified

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Cooling Capacity (kW)270–1700
RefrigerantR-134a
Seer lt 12 7 standardup to 4.6
Sepr ht 12 7 standardup to 5.8
Sepr ht 12 7 premiumup to 6.2
ControlSmartVu™ 4.3" display
Inspection

Inspector Detail

Common issues

  • Refrigerant leaks at flare/braze joints and schrader valves from vibration over time
  • Condenser coil fouling from salt-laden marine air reducing heat rejection
  • Compressor bearing or oil wear from refrigerant migration or low oil level
  • Fan motor or EC fan controller failure from vibration or moisture ingress
  • Low refrigerant charge from slow leaks causing high superheat and reduced capacity
  • Control system sensor drift (temperature/pressure transducers) causing erratic staging
  • Compressor short-cycling from low load or a faulty capacity control signal

Inspection checklist

  • Refrigerant leak check at all joints, valves, and compressor terminals
  • Condenser coil cleanliness and corrosion-protection coating condition
  • Compressor oil level and condition check
  • Superheat/subcooling readings checked against the unit's design values
  • Fan motor and blade condition and vibration check
  • Electrical connections and contactor condition in the control panel
  • Safety and control device function test - high/low pressure switches, flow switches
  • Refrigerant charge weight verification against the nameplate
  • Condenser fan and EC controller function test on the 30XBP variant
  • Chilled water/glycol flow rate and pressure drop across the evaporator

Service intervals

Refrigerant leak checkper the applicable refrigerant-gas regulation schedule, commonly annually or more often for larger charge sizes
Condenser coil cleaningtypically every 3-6 months in a marine salt-air environment, more often if visibly fouled
Compressor oil analysistypically annually or per the maker's schedule
Control and safety device function testannually or per the maker's schedule
Full service by a qualified refrigeration techniciantypically annually

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

Typical wear limits

Superheat/subcooling deviationa deviation of more than a few degrees from the unit's design superheat/subcooling commonly indicates a charge or metering fault - confirm exact figures against the unit's own commissioning data
Condenser coil coating wearrenew or recoat the protective coating before base metal corrosion is exposed - inspect at each coil cleaning

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

Critical spares

  • Compressor oil of the correct type for the refrigerant
  • R-134a refrigerant for top-up, sourced and handled per applicable regulations
  • Contactors/control relays
  • Pressure transducers/switches
  • Condenser fan motor
  • Filter drier core

Safety

  • Pressurized refrigerant system - risk of frostbite from liquid refrigerant contact and pressure hazards from over-pressurization
  • Electrical hazards in the control panel and compressor terminal box
  • Rotating fan blades - lock out/tag out before servicing
  • Refrigerant handling requires certified personnel and recovery equipment per applicable regulations - venting to atmosphere is not permitted

Class survey

HVAC/chiller plant is generally reviewed for correct function of safety devices (high/low pressure cut-outs) and, where accommodation cooling is class-notated, functional testing at survey; refrigerant handling and charge records should be documented per the applicable environmental regulations.

Estimated lifetime: Not typically rated in running hours - air-cooled marine chillers of this class commonly give 15-20 years of service with proper coil maintenance and refrigerant leak control; actual life is heavily influenced by salt-air corrosion protection and how well refrigerant charge is maintained.

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