LME73.840A1PKG-PRG1 Siemens Flame Safeguard

Overview

The Siemens LME73.840A1PKG-PRG1 is a preprogrammed flame safeguard assembly designed for the startup and supervision of multistage or modulating forced draft burners and atmospheric gas burners. This package includes the LME73.000A1 basic unit, the PME73.840A1 program module, and a complete plug kit. It is specifically engineered to provide integrated valve proving and advanced burner management, ensuring high safety standards and efficient combustion in medium to high-capacity industrial and commercial systems.

Features

• Integrated valve proving (leakage test) for enhanced safety during burner startup and shutdown
• Microprocessor-based digital signal handling for precise control sequences
• Built-in 3×7-segment display and multicolor LED for real-time status and error notifications
• Electrical remote lockout reset facility for convenient system management
• Air pressure supervision with a function check of the air pressure switch during operation
• Undervoltage detection to prevent improper burner operation during power fluctuations
• Modular design allows for easy installation, servicing, and replacement of the program module

Specifications

• Model: LME73.840A1PKG-PRG1
• Mains Voltage: AC 120 V (50/60 Hz)
• Power Consumption: Approximately 3 VA
• Safety Class: I (Basic insulation with protective earth)
• Protection Rating: IP40 (when mounted correctly)
• Operation Type: Intermittent (at least one controlled shutdown every 24 hours)
• Flame Supervision: Ionization probe or UV flame detectors (QRA series)
• Weight: Approximately 5 lbs (2.27 kg)
• Dimensions: 12 x 8 x 8 inches (packaged)

Applications

• Supervision of multistage or modulating forced draft gas and oil burners
• Commercial boiler rooms and industrial heating plants
• Systems requiring integrated valve proving to meet safety codes
• Industrial furnaces and thermal processing equipment
• Retrofitting existing burner controls with advanced digital flame safeguard technology