1592018560 MRLDS-450 QRG GB r.1.2 08.06.2020 MRLDS-450 2/12
1. INTRODUCTION
The MRLDS-450 refrigerant gas detector is designed for use in refrigeration applications, it 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.
The complete MRLDS-450 manual is available to download scanning the QR code at the end of this Quick
Refence Guide, or at the address: https://webapps.emerson.com/Dixell/Pages/Manuals
1.1 Safety Instructions
IMPORTANT: Before using this product, carefully read and strictly follow the instructions in
the manual. Ensure that all product documentation is retained and available to anyone
operating the instrument.
DANGER: This instrument is neither certified nor approved for operation in oxygen-
enriched atmospheres. Failure to comply may result in personal injury or death.
WARNING: Use this product only for the purposes specified in this document and under
the conditions listed.
WARNING: This instrument has not been designed to be intrinsically safe for use in areas
classified as being hazardous locations. For your safety, DO NOT use it in hazardous
(classified) locations.
WARNING: In the event of an alarm or over-range condition, the sensor must be
recalibrated to ensure continued accuracy.
WARNING: This product must be recalibrated if installed in a non-room condition
environment (i.e. temperature or humidity extremes).
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
suggested to ensure proper gas detection and alarm function.
CAUTION: Except for maintenance detailed in this manual, these products should only be
opened and / or serviced by authorized technical personnel. Failure to comply may void
the warrant.
CAUTION: Operator assumes responsibility for complying with all laws, rules and regulations
governing the use of this product.
CAUTION: Use only genuine parts and accessories. Failure to comply may impair the
operation of the product and / or void the warranty.
CAUTION: Only operate the product within the framework of a risk-based alarm signaling
concept.
