Preface - McQuay MDS Series Service Manual

Preface

This manual provides a guideline for service personnel to perform start-up/commissioning on the MDS system.
Besides providing the details on the system wiring method, termination connection and PCB setting, this manual
also consists of information and working instruction on the Smart Commander Service Version. This service
manual contains all the information needed (such as complete list of error code with troubleshooting flow chart
for possible root cause) to do necessary repair, maintenance and troubleshooting task for the MDS air
conditioner system.
This service manual is intended for and should only be used by qualified engineers/service personnel.
Installation and maintenance are to be performed only by qualified personnel who are familiar with local
codes and regulations, and experienced with this type of equipment.
Caution: Sharp edges and coil surfaces are a potential injury hazard. Avoid contact with them.
Warning: Moving machinery and electrical power hazard may cause severe personnel injury
or death. Disconnect and lock off power before servicing equipment.
iv Service Manual SM-MDS_(ii)