Denco Pressure Leak Test

Denco Pressure Leak Test

Job Description:  Denco Pressure Leak Test

Area: Duke Street, London

Issue Identified:  Following a recent Planned Preventative Maintenance visit the engineer advised a pressure leak test to be carried out as Daikin Chiller is low on refrigerant.

Works carried out:

  • Isolated the Daikin Chiller unit electrically and mechanically.
  • Recovered refrigerant into certified cylinder for storage on site.
  • Weighed and confirmed the charge.
  • Pressure tested with OFN (oxygen free nitrogen) to locate leak.
  • Repaired leak by means of brazing.
  • Re-pressure tested for 24 hours.
  • Once proved released OFN (oxygen free nitrogen) to atmosphere and evacuated system to a minimum of 2 Torr.
  • Re-charged with recovered refrigerant and trim charged with virgin refrigerant.
  • Test ran and commissioned.
  • Completed waste transfer note and handed to on-site representative.
  • Completed F Gas records.

ACES Group Can Also Supply and Install all Denco Units – Call Us On 01865 890996

ACES service and maintain Denco Units. Denco Chillers and Air-Conditioning units are used for a variety of applications including process cooling where tough demands are placed on all types of temperature conditions, strict control and constancy. ACES have engineers based in London 24/7 available for all call outs or maintenance work.

Some of the many Denco units we support
  • DENCO-OfficeCool
  • Adia-DENCO EVAPORATIVE COOLING UNIT
  • Ultra-DENCO
  • Row-DENCO
  • Multi-DENCO
  • GLCU 2015 – 4060 BC1/2 (40 – 162 kW)
  • GCH 100 – 250 CD4/1 (13 – 32 kW)
  • HeaMo GEO – REG 195-415 AD42 (200 – 426 kW)
  • HeaMo GEO – REG 050-205 AD22 (50 – 212 kW)
  • GLWH 2012–4120 CD2.R (38 – 400 kW) (reversible)
  • GLWH 2012-4120 CD2.H (38 – 400 kW) (irreversible)
  • GLWC 2012-4120 CD2 (38 – 400 kW)
  • GLWC 1055-2475 DA2 (188 – 1693 kW)
  • FGWC 2140-2465 AE2 (R513A, Inverter-Screw 532-1784 kW)
  • GLRC 2015–4160 CD2 (41 – 442 kW)
  • FGAH 1005-1014 CD 4/1 (Inverter 5-38kW)
  • FGAH 2020-2081 AG 1/2 (R454B, 53 -223 kW)
  • FGAH 4060-4120 BG2 (R454B, 151 – 337 kW)
  • GLFC 2150-2600 DA2 (286 – 1212 kW)
  • HeaMo Air – REA 145-300 AD42 (142-311 kW)
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