Air Handling Unit (AHU) – 73-11-000
Teknotherm Marine Air Handling Unit (AHU) – 73-11-000 — Marine and offshore HVAC: supply of cleaned, cooled or heated air to accommodation areas and other spaces aboard ships and offshore modules. Available in 12 standard sizes; sections include air inlet, filter, cooling, heating, humidifying, fan and distribution. Construction: sandwich panels (galvanised steel 0.9 mm inside/outside, 50 mm mineral wool 65 kg/m³ insulation), closed galvanised steel profile framework 1.5 mm, cast aluminium corner pieces. Options: single-duct, dual-duct, with/without recirculation, with/without humidifier, variable air volume (VAV), CO₂-controlled ventilation, UV-filter, high- and low-pressure variants, heat recovery..
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Filter inspection and replacement: check pressure drop across supply-air filters (coarse and fine stages) at each scheduled interval; replace or clean when differential pressure exceeds manufacturer limit.
Cooling and heating coil inspection: check for fouling, corrosion, and fin damage on chilled-water and hot-water coils; flush and clean as required; verify water flow rates and inlet/outlet temperatures.
Fan and motor check: inspect fan blades for erosion, corrosion, and imbalance; verify motor current draw against nameplate; check belt tension (if belt-driven) and bearing condition; re-lubricate as specified.
Drain pan and condensate system: clean drain pan to prevent biological growth (Legionella risk); verify condensate trap priming and free drainage; inspect drain piping for blockages.
Casing and access door seals: inspect all gaskets and door seals for deterioration; check casing panels for corrosion (especially in salt-air marine environment); verify no air leakage at joints.
Damper actuators and linkages: function-test all fresh-air, return-air, and bypass dampers; verify full stroke movement and fail-safe position; lubricate linkages and check actuator torque.
Humidifier section (if fitted): descale steam or evaporative humidifier; check spray nozzles or steam distributor for blockages; verify hygiene condition to prevent microbial contamination.
Controls and instrumentation: verify calibration of temperature, pressure, and CO₂ sensors; test safety interlocks (fire/smoke detectors, freeze-stat cut-out); check variable-frequency drives (VFDs) for fault codes.
Type-general inspection and maintenance points for this equipment category — not model-specific.
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