MODEL YT - STYLE J - R123 COOLING ONLY - Operating & Maintenance

Oct 22, 2026

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Operating and maintenance instructions for Millennium YT centrifugal liquid chillers, model YT (Style J), specifically R123 Cooling Only, equipped with an OptiView control center. The document provides general safety guidelines and defines safety symbols for danger, warning, caution, and notes. It explains restrictions on external wiring inside the micro panel cabinet, emphasizing qualified personnel and compliance with YORK specifications. It also summarizes related reference instructions and lists key sections covering system fundamentals, control center, printers, operating procedures, components, maintenance, troubleshooting, and preventive maintenance.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages156

Reading Time6 h 33 min

AccessFree to download

SECTION 1 Description of System and Fundamentals of Operation

SECTION 2 OptiView Control Center

SECTION 3 Printers

SECTION 4 System Operating Procedures

SECTION 5 System Components Description

SECTION 6 Operational Maintenance

SECTION 7 Troubleshooting

SECTION 8 Maintenance

SECTION 9 Preventive Maintenance

| | MILLENNIUM Æ CENTRIFUGAL LIQUID CHILLERS | | | --- | --- | --- | | OPERATING & MAINTENANCE | Supersedes: 160.55-O1 | Form 160.55-O1 | MODEL YT (STYLE J) R123 COOLING ONLY WITH OPTIVIEW ô CONTROL CENTER FOR ELECTRO-MECHANICAL STARTER, SOLID STATE STARTER & VARIABLE SPEED DRIVE 29509A FORM 160.55-O1 2 YORK INTERNATIONAL FORM 160.55-O1 IMPORTANT! READ BEFORE PROCEEDING! GENERAL SAFETY GUIDELINES This equipment is a relatively complicated apparatus. During installation, operation, maintenance or service, individuals may be exposed to certain components or conditions including, but not limited to: refrigerants, oils, materials under pressure, rotating components and both high and low voltage. Each of these items has the potential, if misused or handled improperly, to cause bodily injury or death. It is the obligation and responsibility of operating/service personnel to identify and recognize these inherent hazards, protect themselves and proceed safely in completing their tasks. Failure to comply with any of these requirements could result in serious damage to the equipment and the property in which it is situated, as well as severe personal injury or death to themselves and people at the site. This document is intended for use by owner-authorized operating/service personnel. It is expected that this individual possesses independent training that will enable them to perform their assigned tasks properly and safely. It is essential that, prior to performing any task on this equipment, this individual shall have read and understood this document and any referenced materials. This individual shall also be familiar with and comply with all applicable governmental standards and regulations pertaining to the task in question. SAFETY SYMBOLS The following symbols are used in this document to alert the reader to areas of potential hazard: DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION identiﬁes a hazard which could lead to damage to the machine, damage to other equipment and/or environmental pollution. Usually an instruction will be given, together with a brief explanation. NOTE is used to highlight additional information which may be helpful to you. External wiring, unless speciﬁed as an optional connection in the manufacturer’s product line, isNOT tobe connected inside the micro panel cabinet. Devices such as relays, switches, transducers and controls may NOT be installed inside the micro panel. NO external wiring is allowed tobe run through the micro panel. All wiring must be in accordance with YORK’s published speciﬁcations and must be performed ONLY by qualiﬁed YORKpersonnel. YORK will not be responsible for damages/problems resulting from improper connections to the controls or application of improper control signals. Failure to follow this will void the manufacturer’s warranty and cause serious damage to property or injury to persons. YORK INTERNATIONAL 3 FORM 160.55-O1 CHANGEABILITY OF THIS DOCUMENT In complying with YORKís policy for continuous product improvement, the information contained in this document is subject to change without notice. While YORK makes no commitment to update or provide current information automatically to the manual owner, that information, if applicable, can be obtained by contacting the nearest YORK Applied Systems Service ofﬁce. It is the responsibility of operating/service personnel as to the applicability of these documents to the equipment in question. If there is any question in the mind of operating/service personnel as to the applicability of these documents, then, prior to working on the equipment, they should verify with the owner whether the equipment has been modiﬁed and if current literature is available. REFERENCE INSTRUCTIONS | DESCRIPTION | FO

FAQs

What safety risks does the document warn about before performing tasks?

It highlights hazards including refrigerants, oils, pressurized materials, rotating components, and high/low voltage. It requires operating/service personnel to recognize these inherent hazards and proceed safely.

What restrictions apply to external wiring in the micro panel cabinet?

Unless an optional connection is specified by the manufacturer, external wiring must not be connected inside the micro panel. Relays, switches, transducers, and controls must not be installed inside the micro panel, and wiring must follow YORK specifications by qualified personnel.

How can the document be updated or current literature verified?

The manual notes that information is subject to change without notice. Operating/service personnel should verify with the owner whether the equipment has been modified and if current literature is available, and can contact the nearest YORK Applied Systems Service office for applicable updated information.

Oct 22, 2026

Uploaded by 404brain