Unit installation

803 C – 01/05 A – pag. 2/17
Introduction
Purpose of the manual
The manual allows the installer and the operator to perform correctly all the operations required for the installation
and maintenance of the chiller without provoking any damages to the unit or to the qualified personnel.
Therefore the manual is essential to help 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’s responsibility.
Responsibilities
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 specific training in
refrigeration. Regular checking of safety devices should be carried out but routine maintenance should be carried
out in line with the recommendations list in the main section.
The simple design of the refrigeration circuit minimizes potential problems during normall unit operation.
Characteristics
General description
McQuay International introduces their newest water cooled screw chillers equipped with new single screw
compressors.
McQuay water cooled PFS chillers equipped with 1 or 2 McQuay screw compressors are a new range of the unit
using the StarGate
TM
single screw compressors. They are manufactured by McQuay to satisfy the requirements of
the consultants and the end user. McQuay PFS units are designed to minimise energy costs while maximising the
refrigeration capacities. Once again McQuay has developed a line of chillers unsurpassed in performance and
quality that will meet the most stringent requirements of comfort cooling, ice storage and process applications.
McQuay’s chiller design experience, combined with outstanding features makes the PFS chiller unmatched in the
industry.
Safety measures
The unit must be suitably clamped to the ground.
It is necessary to follow these cautions and warnings:
- The unit must be lifted only by using the proper tools able to support the weight of the unit.
- No admittance to unauthorized or unqualified personnel should be allowed.
- No operation on electrical components is allowed without having switched off electricity supply.
- No operation on electrical components is allowed without using insulated platforms; no water or moisture should
be present.
- All the operation on refrigerant circuit and pressurised components are to be performed by qualified personnel
only.
- Compressor substitution or oil addition must be performed by qualified personnel only.
- Avoid contamination of unrelated bodies into the water piping during the unit connection to the water system.
- It is necessary that a mechanical filter is fitted to the piping connected to the exchangers entry.