Harris 920 Series User Manual

HARRIS PRODUCTS GROUP 920 SERIES
GAS DISTRIBUTION EQUIPMENT Installation and Operation Manual SWITCHOVER SYSTEM
THIS BOOKLET CONTAINS PROPRIETARY INFORMATION FROM THE HARRIS PRODUCTS GROUP. IT IS PROVIDED TO THE PURCHASER SOLELY FOR
USE IN CONJUNCTION WITH AUTOMATIC SWITCHOVER MANIFOLDS MODEL 920 SERIES.
General Precautions –
• Installation should be performed by personnel knowledgeable in the handling of compressed gases.
• Choose a location well ventilated for installation
• Use proper precautions when dealing with any compressed gas.
• The user should be familiar with the chemical and reactive properties of the gas being used (Read the MSDS of the gas being used).
Reference Material –
The following safety bulletins are available from the Compressed Gas Association (www.cganet.com)
• SB-2 Oxygen Deficient Atmospheres
• SB-10 Correct Labeling & Proper Fittings On Cylinders/Containers
• SB-15 Avoiding Hazards In Confined Work Spaces During Maintenance, Construction And Similar Activities
• SB-19 Potential Valve Thread & Cylinder Thread Mismatch
General Instructions -
Switchover Manifolds should be installed in accordance with guidelines stated by the National Fire Protection Association, the Compressed Gas
Association, OSHA and all applicable local codes. Switchover manifolds should not be placed in a location where the temperature will exceed
120°F (49°C) or fall below –20°F (-29°C) for sustained periods of time. A manifold placed outside in an open location should be protected against
rain and excessive moisture. During winter, protect the manifold from ice and snow. The manifold should be located in a clean, well-ventilated
area which is free of oil and combustible materials.
Introduction
The changeover panel is designed to provide continuous uninterrupted gas flow for applications using cylinder gas supplies up to 3000 PSIG. Ideal
for high purity applications, this panel consists of two high purity primary and line regulators, gauges, isolation valves, and mounting panel.
Unscheduled downtime created by depleted cylinders can be eliminated with this panel incorporated into your system. When the primary side is
consumed, the panel automatically switches to the reserve supply and feeds the process at a constant pressure. The line regulator eliminates
virtually any pressure variation associated with this switch.
Maximum Inlet Pressure: 3000 PSIG
Outlet Pressure: 10 - 100 PSIG or 20-200 PSIG (User Adjustable)
Maximum Flow Rate: 200 SCFH

Harris 920 Series Specifications

General

Brand	Harris
Model	920 Series
Category	Industrial Equipment
Language	English

Summary

General Precautions and Instructions

General Precautions

Key safety measures for personnel handling compressed gases during installation and operation.

Reference Material

List of safety bulletins available from the Compressed Gas Association for further reference.

General Instructions

Guidelines for installing switchover manifolds according to industry standards and environmental conditions.

Introduction to Switchover System

Overview of the changeover panel's design for continuous gas flow and elimination of downtime.

Installation and Operation Procedures

Installation Instructions

Step-by-step guidance for unpacking, inspecting, and mounting the changeover panel unit.

Additional Items for Installation

List of essential components not supplied with the changeover unit for proper installation.

Cylinder Storage and Use

Safety guidelines for storing and moving gas cylinders to prevent accidents and damage.

Attaching Cylinders to Changeover Panel

Procedure for connecting gas cylinders to the panel, including leak checking and contamination prevention.

System Operation

Instructions on how to operate the system by selecting cylinder banks and adjusting pressure.

Changeover Manifold Operation Theory

Explanation of the combination regulator system and how it manages gas supply from dual cylinder banks.

Model 920 Specifications and Materials

Model 920 Specifications

Detailed technical specifications including pressure ratings, flow capacity, and operating temperature.

Materials of Construction

List of materials used for various components of the switchover manifold system.

System Alarms and Warranty Information

Alarm Systems

Information regarding the connection and safety considerations for Harris or customer-supplied alarm systems.

Equipment Warranty Policy

Details on Harris's warranty coverage for manifold products, including limitations and exclusions.

Warranty Addendum for Changeover Panels

Specific warranty terms for changeover panels, including conditions that may void the warranty.