Maintenance of Sequencer on York chillers

Maintenance of Sequencer on York chillers

Job Description:  Maintenance of Sequencer on York chillers

Area: New Street Square, London

Issue Identified:  Client requested maintenance of York Chillers

Works carried out:

HARDWARE CHECKS

  • Checked power supplies and record
  • Checked condition of fuses and replaced as necessary
  • Checked condition of harnesses and ribbon cables
  • Checked e-proms and micro-chips were correctly seated
  • Checked battery voltage and recorded
  • Checked watchdog operation
  • Checked operation of keypad, display and audible alarm

SOFTWARE CHECKS

  • Checked alarm tables for active alarms recorded and cleared
  • Checked time and date, corrected for daylight savings
  • Checked advisory errors, recorded and cleared
  • Checked operation of analogue and digital histories
  • Checked passwords and recorded all levels
  • Backed up software
  • Checked operation of all communication channels

FIELD INTERFACES

  • ANOLOG INPUTS. Checked calibration of sensors and recorded
  • STATUS / PULSE INPUTS. Checked operation
  • SWITCHED OUTPUTS. Checked operation
  • MONITORED OUTPUTS. Checked operation
  • MODULATING OUTPUTS. Checked operation

ACES Group Can Also Supply and Install New York Chillers – Call Us On 01865 890996

Features and advantages of the York Chiller

The benefits of a York Chiller are reduced emissions, greater flexibility, more sustainable and better control. Designed for temperature sensitive operations such as data centres, manufacturing, and hospitals. ACES have a team of highly trained York specialist engineers. We offer a 24/7 service with most of our engineers based in London.

Some of the many York Chillers we support
  • YCAL Scroll Chiller
  • YLAA Scroll Chiller
  • YVAA Variable Speed Drive Screw Chiller
  • YVFA Free Cooling Variable Speed Screw Chiller
  • YCIV Variable Speed Drive Screw Chiller
  • YHAU-C Single Effect Steam Absorption Chiller
  • YHAU-CW Double Effect Steam Fired Absorption Chiller
  • YHAU-CG/CA-CXR Double Effect Direct Fired Chiller/Heaters
  • YHAU-CG/CA Double Effect Direct Fired Chiller/Heaters
  • YHAU-CL/CH Single Effect Hot Water Absorption Chiller
  • YHAP-C Absorption Heat Pump
  • YCUL Air-cooled Scroll Condensing Unit
  • YLUA Air-cooled Scroll Condensing Unit
  • YMC² Magnetic Bearing Centrifugal Chiller
  • YZ Magnetic Bearing Centrifugal Chiller
  • YK Centrifugal Chiller
  • YVWA Variable Speed Screw Chiller
  • YCWL Scroll Chiller
  • YK-EP Centrifugal Chiller With Economizer
  • YST Steam Turbine Centrifugal Chiller
  • Titan OM Custom Design Centrifugal Chiller
  • CYK Compound Centrifugal Chiller/Heat Pump
  • YD Dual Centrifugal Chiller
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