Emerson MRLDS-450 Quick Start Manual

Refrigerant Gas Detector (MRLDS-450) for
Machinery Rooms, Cold Rooms and Freezers
Quick Start Guide
The MRLDS-450 refrigerant gas detector is designed for use in refrigeration
applications and may be used as a stand-alone device, or connected to a facility's
building management system (BMS). It enables compliance with refrigerant
safety codes (ASHRAE 15 and EN378) and features audible and visual alarms to
alert personnel in the event of a refrigerant leak.
1 Safety Instructions
Document Part # 026-4417 Rev 3
©2023 Emerson Digital Cold Chain, Inc. This document may be photocopied for personal use.
Visit our website at www.climate.emerson.com for the latest technical documentation and updates.
DANGER: The MRLDS-450 is NOT certified or approved for operation in oxygen-enriched
atmospheres. Failure to comply may result in severe injury or death.
WARNING: Use this product ONLY for the purposes and under the conditions listed in the user
manual. Failure to comply may result in injury and/or damage to the product. The MRLDS-450
has not been designed to be intrinsically safe for use in areas classified as being hazardous
locations. For your safety, DO NOT use in hazardous locations. Consult a qualified professional
before connecting the MRLDS-450 to devices not mentioned in this manual. Failure to comply
may result in injury and/or damage to the product.
WARNING: The gas diffusion path can become occluded (moisture, dust, debris, frozen
condensation) over time, resulting in reduced or complete lack of gas detection and alarming
function. Routine visual inspection of the gas detector and bump testing are recommended to
ensure proper gas detection and alarm function. For information on calibrating the sensor, refer
to the Care and Maintenance section of the MRLDS-450 User Manual P/N 026-1316.
CAUTION: Except for the maintenance detailed in this manual, this product should ONLY be
opened and/or serviced by authorized personnel. Failure to comply may void the warranty.
CODE COMPLIANCE: Comply with all local and national laws, rules and regulations associated
with this equipment. Operators should be aware of the regulations and standards in their
industry/locality for the operation of the MRLDS-450.
Figure 1 - Refrigerant Gas Detector
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