Mitsubishi AC Reception Air Curtain PLT

Mitsubishi AC Reception Air Curtain PLT

Job Description: Pressure Leak Test (PLT) on Mitsubishi AC Reception Air Curtain

Area: Baker Street, London

Issue Identified: Following a recent call out to site the engineer advised that the unit is short of refrigerant and the suction pipe was icing up. Due to the location of the unit the works had to be carried out in out of hours.

Works carried out:

  • Isolated the Mitsubishi unit electrically and mechanically.
  • Recovered refrigerant into a dedicated recovery cylinder.
  • Pressure tested with OFN (oxygen free nitrogen) to locate leak.
  • Repaired the leak by means of brazing.
  • Once proved released Oxygen Free Nitrogen (OFN) into atmosphere and evacuated the system to a minimum of 2 Torr.
  • Re-charged with the recovered refrigerant and trim charged with virgin refrigerant.
  • Test ran and re-commissioned.
  • Completed a waste transfer note and handed to on-site representative.
  • Completed an F Gas certificate.

Mitsubishi Mr Slim – is available as wall or floor mounted and is ideal for retail and offices

M Series –  a very versatile system and is suitable for retail and offices and is available using low GWP R32 refrigerant

Multi Split – the outdoor unit can connect between 2 and 11 indoor units.

City Multi VRV – ideal for larger premises who demand efficiency and high performance

City Multi HVRF – a multi hybrid VRV system which can provide heating in one area and cooling in another area of building

Some of the many Mitsubishi Split units we support
  • PUZ-ZM200/250YKA R32 Power Inverter Heat Pump
  • PUZ-M200/250YKA R32 Standard Inverter Heat Pump
  • PLA-ZM R32 Power Inverter Heat Pump
  • PLA-M R32 Standard Inverter
  • PLA-ZM R32 Power Inverter Heat Pump
  • PLA-M R32 Standard Inverter
  • PLA-SM R32 Inverter Heat Pump
  • PKA-M R32 Power Inverter Heat Pump
  • PKA-M R32 Standard Inverter Heat Pump
  • SLZ-M R32 Inverter Heat Pump
  • PEAD-M R32 Power Inverter Heat Pump
  • PEAD-M R32 Power Inverter Heat Pump
  • PEAD-M R32 Standard Inverter Heat Pump
  • PEAD-M R32 Standard Inverter Heat Pump
  • SEZ-M R32 Inverter Heat Pump
  • PEA-RP R410A Power Inverter Heat Pump
  • PEA-RP R410A Standard Inverter Heat Pump
  • PAC-IF013B-E Air Handling Unit Controller
Abbreviations

HVAC – Heating, Ventiliation and Air Conditioning, PLT – Pressure Leak Test,  PRV – Pressure Relief Valve, PPM – Planned Preventative Maintenance, OFN – Oxygen Free Nitrogen, AHU – Air Handling Unit, GWP – Global Warming Potential, VRF – Variable Refrigerant Flow, VRV – Variable Refrigerant Volume, ACU – Air Conditioning Unit, FCU – Fan Coil Unit, AC – Air Conditioning,  HP – High Pressure, LP – Low Pressure

Ref: 1703