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Packaged Ammonia Chilled Water System

195019 - 1

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Specifications

Description

Key Features

  • Compressor — Mycom 250VLD The refrigeration compressor is a Mycom 250VLD twin-screw unit manufactured by Mayekawa Mfg. Co., Ltd (Japan).
  • Mycom screw compressors are recognised globally for their reliability in ammonia refrigeration duty, with proven performance in food processing and cold chain applications.
  • Manufacturer Mayekawa Mfg. Co., Ltd — MYCOM brand (Made in Japan) Model 250VLD
  • Twin-screw compressor. Serial number 2515425 Leak test pressure 313 psig (2,158 kPa)
  • Hydrostatic test pressure 470 psig (3,241 kPa) Refrigerant Ammonia (NH₃)

Technical Specifications

  • Drive Motors — WEG Three-Phase Induction The compressor is driven by WEG three-phase induction motors (WEG Indústrias Ltda, Brazil), manufactured to IEC 34 standard.
  • WEG is one of the world's largest electric motor manufacturers and motors of this type are readily supported in New Zealand.
  • Manufacturer WEG Indústrias Ltda — Jaraguá do Sul, Brazil Type Three-phase induction motor — IEC 34 Frame reference 03204 (embossed on frame) Drive end bearing 6314 Lubrication interval 1,700 operating hours Lubrication charge 30 g per bearing Nameplate condition Heavily corroded — full electrical data (kW, voltage, current) requires site verification
  • Low-Pressure Vessel — Weldtrade WPC LP Pot The LP Pot is a pressure vessel fabricated by Weldtrade Engineering Ltd (Otahuhu, Auckland) to BS 5500 Category 2 standard.
  • The vessel is the low-pressure side of the ammonia system, serving as a liquid separator / surge drum for the evaporator circuit.
  • Manufacturer Weldtrade Engineering Ltd — Otahuhu, Auckland Design code BS 5500 Category 2 Serial number WT-OS-02074 M&I vessel number 161333 Design pressure 2,069 kPa (300 psig) Test pressure 3,104 kPa (450 psig) | VE 4120 Design temperature 40 °C Date of manufacture January 2002 (01/02) Relief valve M&I ref. 161331
  • Plate Heat Exchanger — Alfa Laval A gasketed plate heat exchanger (PHE) manufactured by Alfa Laval is installed as part of the WPC chilling circuit.
  • Alfa Laval is the global market leader in plate heat exchanger technology and replacement parts, gaskets, and service are widely available in NZ.
  • Manufacturer Alfa Laval New Zealand Ltd — Hamilton Type Gasketed plate heat exchanger Asset tag SSHEC820 — Unit 1 Volume Approx. 50 (full units not legible from nameplate) Current status Tagged OUT OF SERVICE — 'Do Not Operate' isolation tags fitted at time of survey Warning Read instruction manual before installation, operation and maintenance (per nameplate)

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