Bell and Gossett 70E - User Manual

INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.
SAFETY
INSTRUCTION
This safety alert symbol will be used in this manual and on the
70E/70M Safety Instruction decal to draw attention to safety
related instructions. When used, the safety alert symbol means
ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS
MAY RESULT IN A SAFETY HAZARD!
INSTRUCTION MANUAL
S12228
REVISION A
Installation, Operation, & Maintenance Instructions
70E/70M Multiple Pump & Control
Pressure Booster Systems
70E
DESCRIPTION
Microprocessor controlled frame mounted multiple pump
pressure boosting system with combination pressure reducing
and non-slam check valves for maintaining system pressure.
The motors are controlled by a control panel with micro-
processor, starters, overload protection, virtual H-O-A switches,
optional short circuit protection, and control transformer.
The microprocessor control consists of an operator interface
with 2 line backlit display and membrane key pad, input/
output board with 24V power supply, and microcontrolled
kW transducer.
BELL & GOSSETT
®
OPERATIONAL LIMITS
See unit nameplate for pump capacity, boost, full load current
draw, and operating voltage. The pump discharge pressure
must not exceed 125 PSI unless special piping modifications
are made.
Bell & Gossett
®

Summary

General Information and Safety

Safety Instructions and Requirements

Highlights safety alert symbols, potential hazards, and requirements to prevent injury or damage.

Electrical Wiring and Grounding

Details electrical wiring requirements, including wire sizing, grounding, and safety precautions.

Installation Guidelines

Location, Unit Support, and Piping

Covers selecting an appropriate location, unit support, and essential piping connections and materials.

Wiring and Signal Connections

Details power, analog, and digital signal wiring requirements and terminal connections.

Start-Up and System Configuration

Putting the Unit into Service

Covers initial steps for starting the unit, including pump rotation checks.

System Configuration Parameters

Guides users through configuring system parameters and settings via the operator interface.

Operation and Control Features

Control Panel Key Functions

Explains the purpose and usage of various keys on the control panel for operation.

System Operation Modes

Details auto and manual operation modes, including pump control, staging, and shutdown conditions.

Maintenance and Diagnostics

Diagnostic Tests and Fault Isolation

Explains how to use diagnostic tests to identify and resolve system faults and error conditions.

Field Repair and Instrument Usage

Offers recommendations for field repairs, instrument usage, and general maintenance practices.

Appendices and Reference Materials

Installation and Wiring Checklists

Checklists to verify proper system piping, unit installation, and electrical connections.

Pressure Reducing Valve (PRV) Procedures

Guides users on PRV adjustment, field balancing, and troubleshooting.

Troubleshooting Valves and System Pressure

Detailed guide for diagnosing and resolving issues with pressure reducing and check valves.

Service Test and Transducer Information

Explains service test procedures and provides information on transducers and the Power Transducer Board.

Bell and Gossett 70E Specifications

General

Brand	Bell and Gossett
Model	70E
Category	Extender
Language	English