Operating instructions

IMM AGSB-60 3

Introduction

General Description

McQuay GeneSys

™

air-cooled water chillers are complete, self-contained, automatic

refrigerating units that include the latest in engineered components, arranged to provide a

compact and efficient unit. Each unit is completely assembled, factory wired, evacuated,

charged, tested and comes complete and ready for installation. Each unit consists of multiple

air-cooled condenser sections with integral subcooler sections, each with a semi-hermetic

single-screw compressor, solid-state starter, a multiple-circuit shell-and-tube flooded

evaporator, and complete refrigerant piping. Each compressor has an independent

refrigeration circuit. Liquid line components included are manual liquid line shutoff valves,

charging ports, filter-driers, sight-glass/moisture indicators, and electronic expansion valves. A

discharge check valve is included and a compressor suction shutoff valve is optional. Other

features include compressor heaters, evaporator head heaters, automatic one-time pumpdown

of refrigerant circuit upon circuit shutdown, and an advanced fully integrated microprocessor

control system.

Information on the operation of the unit and on the MicroTech II controller are in the OM AGS

manual. Installation and operating instructions will be shipped with the unit if a L

ONTALK

Modbus

or BACnet

BAS interface is ordered.

Nomenclature

A G S - XXX B

Inspection

When the equipment is received, check all items carefully against the bill of lading to check

for a complete shipment. Carefully inspect for damage upon arrival. Report shipping damage

to the carrier and file a claim with the carrier. Check the unit’s serial plate before unloading

the unit to be sure that it agrees with the power supply available. Physical damage to unit after

acceptance is not the responsibility of McQuay International.

Note: Unit shipping and operating weights are shown in the Physical Data Tables on page 27.

Air-Cooled

Global

Rotary Screw Compressor

Design Vintage

ominal Tons