Care And Maintenance; Maintenance Intervals - Emerson MRLDS-450 Installation And Operation Manual

5

Care and Maintenance

5.1. Maintenance Intervals

Interval
During Commissioning
Every 6-12 Months**
As Required
Table 5-1 - Maintenance Intervals and Functions
* These can be activated via Modbus commands or via MRLDS-400 Series App.
** Typical maintenance frequency can vary by sensor type.
Sensor Type
Electrochemical*
Catalytic Bead
Semiconductor*
Infrared
Table 5-2 - Maintenance Intervals and Functions
* Sensors should be checked after exposure to significant concentrations of gas, which can
shorten the sensor lifetime and/or reduce its sensitivity.
26 • MRLDS-450 Refrigerant Gas Detection I&O Manual
Function
Check calibration
Check LEDs for proper operation*
Check for proper buzzer and relay operation*
Check signal transmission to the BMS.BAS (central controller) if connected*
Inspection by trained service personnel.
Check LEDs for proper operation*
Check for proper buzzer and relay operation*
Check signal transmission to the BMS/BAS (central controller) if connected*
Calibrate the sensor or contact Emerson Technical Support for sensor exchange
with factory - calibrated sensor
Replace sensor module(s)
Recommended Maintenance Interval
12 months
Zero calibration -1-3 months
Span calibration - 6 months
6 months after commissioning
12 months thereafter
12 months
Typical Sensor Lifetime
2-3 years
5-7 years
4-6 years
5-7 years
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