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Introduction
Purpose of the manual
The manual allows the installer and the operator to perform correctly all the operations referred to the installation
and maintenance of the chiller without provoking any damages to the unit or to the qualified personnel.
Therefore the manual is a great help for the qualified personnel that have to arrange the equipment to provide the
correct installation in accordance with local codes and regulation.
Inspection
When the equipment is received, all items on the bill of lading should be carefully checked to insure a complete
shipment. All units should be carefully checked and all shipping damage should be reported to the carrier. The unit
serial plate should be checked before unloading the unit to be sure that it agrees with the power supply available.
Physical damage to unit after acceptance is not McQuay responsability.
Responsabilities
McQuay Italia declines all present and future responsabilities referred to injuries to people and damage to things
and unit, coming from operators negligence, the unrespected installation/maintenance data carrier in this manual,
the lacking of the current regulations respect referred to the safety of the equipment and the qualified personnel.
Servicing and maintenance
Servicing and maintenance of these unit must carried out by experienced personnel with specifing training in
refrigeration. Repeated check the safety devices and continous cycling of control components must be analyzed
and corrected before being reset.
The simple design of the refrigeration circuit totally eliminates potential problems during normall unit operation. No
maintenance work is needed on the refrigeration circuit as long as the unit is operating normally.
Characteristics
General description
McQuay International
introduces their newest air cooled water chiller ALZ/ALP equipped with scroll compressors
and electronic control system. McQuay have once again succeded in developing a high quality product with
extraordinary performance which is able to satisfy HVAC applications.
McQuay units are completely factory assembled, piped, wired and charged with refrigerant and shipped ready for
the installation.
Each unit consists of scroll compressors, condenser coils with independent subcooler circuits, multiple propeller
type direct drive condenser fans with independent fan motors, heavy-gauge weatherproof casing and weatherproof
electrical control centre containing all necessary and operating controls and motor starting equipment.
ALZ/ALP units are high thermodynamic engineering products, studied with high accuracy in balancing
compressors, condensers and evaporators in order to offer high performances and wide safety margins. The
choose of the materials and the equipments adopted for the products has been made without any compromises,
taking care of quality and long life purposes. The products meet ISO 9001 requirements, an assurance, beyond
any doubts, of the high producing standards followed by McQuay.
