User Guide - McQuay MDS030AR Applications Manual

C H A P T E R
6
Servicing and Maintenance

6.1 User Guide

6.1.1 Responsibilities and Obligations
6.1.2 Unpacking Inspection
6.1.3 Using the Units
This product is covered under MacQuay warranty during the warranty period.
Only MacQuay technicians or experienced professionals designated by MacQuay are
allowed to install, test, repair and maintain this product series.
Upon receipt of the units, please check them against the packing list. Check carefully if the
units are damaged during the transportation, and if all the components are complete and
in good condition. In case of any damaged unit or missing parts, please inform MacQuay's
local branch or dealer in writing immediately.
The total installed capacity of indoor units can be greater than but not more than 130%
of the capacity of outdoor units. However, when the total capacity of indoor units in
operation must not exceed that of the outdoor units. Otherwise, the output of each indoor
unit can reach their rated value;
All the indoor units are powered in a centralized manner. Before servicing and
maintenance, be sure to turn off the main power between the units;
After receiving the stop signal, each indoor unit will have its fan and electronic expansion
valve running for another 20~60 seconds, to make use of the afterheat or the cool air that
remains in the heat exchanger and also to get ready for the next start. This is normal.
When the running mode of the indoor unit is in conflict with the running mode of the
outdoor unit, the hand controller will display a message indicating this indoor unit stops
running because of the operation conflict. In this case, you can switch the indoor unit to
a running mode not conflicting with the outdoor unit, to restore the system to normal. The
cooling mode does not conflict with the dehumidifying mode, while the air supply mode
does not agree with any other mode.
The digital compressor adjusts the volume of refrigerant by opening and closing the
PWM solenoid. While the solenoid is operating, it clicks periodically. This is normal.
Design & installation Guide For McQuay MDS Multi System
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