McQuay RVSS14

Installation, Operation and Maintenance Manual
IOMM Starter
Group: Chiller
Part Number: 331375501
Effective: Sept. 2005
Supercedes: New
Starters for Centrifugal Chillers
Low Voltage, Solid State and Wye-Delta
Medium/High Voltage, Solid State and Across-the-Line

McQuay RVSS14 Specifications

General

Brand	McQuay
Model	RVSS14
Category	Controller
Language	English

Summary

General Starter Information

Variable Frequency Drives Overview

Overview of VFDs for chiller applications, their functions and availability.

Basic Electrical Terms Definitions

Definitions of essential electrical terms like LRA, FLA, Inrush Current, etc.

Installation Procedures

Mounting Arrangements

Details on factory-mounted, free-standing, and bracket/cable mounting options.

Receiving and Setting Guidelines

Procedures for inspecting and setting up starters upon receipt.

Location and Mounting Requirements

Guidelines for proper placement, clearance, mounting, and ventilation of starters.

Safety Precautions and Power Wiring

Capacitors and Arrestors Usage Notes

Notes on the use of capacitors and arrestors with starters.

Power Wiring Connection Instructions

Instructions for connecting power wiring to the starter and motor.

Wiring Practices

Motor Terminal Insulation Procedures

Procedures for insulating motor terminals in high humidity or voltage applications.

General Wiring Best Practices

Best practices for signal, control, and power wiring separation and routing.

Connection Sizes

Low Voltage Solid State Connection Sizes

Table detailing wire sizes for solid-state starters based on RLA.

Low Voltage Wye-Delta Connection Sizes

Table detailing wire sizes for Wye-Delta starters.

Medium Voltage Connections

Information on connections for medium and high voltage starters.

Control Wiring

General Wiring Practices

Best practices for signal and control wiring.

Control Power Wiring Sources

Details on supplying control power from different sources.

Separate Power Source Considerations

Low Voltage Starter Wiring for Displays

Field wiring instructions for optional remote displays on low voltage starters.

MediumHigh Voltage Starters

Startup Procedures

General Startup Overview

Overview of startup process performed by qualified technicians.

Low Voltage Solid State (LVSS) Operation

Details on LVSS LED display, programming, quick meters.

LVSS Fault Log and Resetting

How to view fault logs and reset faults or parameters.

Low Voltage Wye-Delta (LVYD) Operation

LVYD Display, Controls, and Faults

Description of LVYD LED display, programming, quick meters, and fault log.

LVYD Resetting and Parameters

Procedures for resetting faults, parameters, and viewing messages.

MediumHigh Voltage, Solid State Operation

Quick Start Parameters Configuration

Guidance on setting Motor FLA and Service Factor parameters.

StartStop Modes and Current Settings

Configuration of motor start/stop modes and initial/maximum current.

Ramp Time, Overload, and Phase Order

Configuring ramp time, overload, and phase order settings.

Low Voltage Starter Operation

Introduction to Low Voltage Starters

Overview of low voltage Wye-Delta and solid-state starters.

Viewing Operational Data

How to access operational data via the starter display or chiller interface.

Standard Starter Keypad and Display

Special Messages Displayed

Explanation of special characters and messages shown on the LED display.

Display Operation and Navigation

Navigating Display Functions

Steps for viewing parameters, messages, faults, and meters.

Managing Faults and Parameters

Procedures for resetting faults, parameters, and performing thermal resets.

Changing Starter Parameters

Viewing Parameter Values

How to navigate and view parameter values.

Modifying Parameter Values

Step-by-step process for changing parameter values.

Status Messages

Display Output Interpretation

Status and Mode Displays

How the display shows status, alarms, and lockout conditions.

Faulted Condition Handling

Quick Meters Access

Accessing status, overload, and phase order meters.

Parameter Restoration and Resets

Restoring factory settings and performing fault/thermal resets.

Wye Delta Specifics

Notes on Wye-Delta operation, including transition and protection.

Wye-Delta Operation Details

Fault Code Troubleshooting

General Troubleshooting Guide

Motor Start and Speed Troubleshooting

Troubleshooting for motors not starting or not reaching full speed.

Acceleration and Stopping Troubleshooting

Diagnosing issues with motor acceleration and stopping.

Metering Incorrect Diagnosis

Other Situations Troubleshooting

Motor Operation Issues

Troubleshooting for wrong rotation, erratic operation, and overheating.

Component and Output Issues

Diagnosing fan, output, and wiring problems.

MediumHigh Voltage Starters Operation

Introduction to MH Voltage Starters

Overview of medium and high voltage starters.

Viewing Data on Micro II Controller

How to access parameters and data on the Micro II controller.

Changing Parameters on Micro II

Micro II Menu Buttons and Navigation

Explanation of the Micro II controller's menu buttons and interface.

Micro II Menu Structure

Navigating the Menu System

Step-by-step guide to navigating the Micro II controller's menu structure.

Quick Start Configuration

Motor FLA and Service Factor Settings

Setting motor FLA and service factor for correct operation.

Start and Stop Modes Configuration

Configuring the motor's start and stop sequences.

Current Settings and Ramp Time

Adjusting initial current, maximum current, and ramp time settings.

Overload and Phase Order Settings

Configuring overload protection and phase sequence sensitivity.

Troubleshooting Common Issues

Motor Start and Speed Troubleshooting

Common issues and solutions for motor start and speed problems.

Motor Stop and Deceleration Troubleshooting

Diagnosing issues with motor stopping and deceleration profiles.

Fault and Log Codes

LED Diagnostics

Maintenance Schedule

Preventive Maintenance Tasks

Maintenance tasks during commissioning, post-commissioning, and routine checks.