Chapter 5 - Maintenance - Honeywell Midas S2 User Manual

CHAPTER
5
MAINTENANCE
Midas S2 is a fully serviceable product designed with modular components that can be readily
replaced by trained service personnel so as to minimize the time that the gas detector is not
available.
External in-line air filters should be replaced every three months or more frequently if the
system is sampling in environments that have high levels of particulate matter or very acidic /
wet atmospheres. Similarly, the internal particulate filter should be replaced every two years or
more frequently if the sample lines are prone to heavy contamination. Refer to the following
table.
Every sensor cartridge is shipped with a 2 years warranty. All sensor cartridges are factory
calibrated to traceable national standards before shipment to the end user.
Note that testing or calibrating with the wrong (incorrect, out of date, non-traceable) calibration
gases, calibration equipment, methods or operating conditions can actually damage the sensor
cartridge's lifetime and alter the calibration adversely. Only qualified calibration technicians
should attempt to calibrate the Midas S2 gas detector.
The internal pump module is designed to operate for a minimum of 24 months and it is
recommended that this pump module (part number Midas S2-A-007 ) be replaced every 2
years.
See the Gas Table for the correct filter requirement for your application.
TABLE 5 -1: Recommended maintenance schedule
Component
Pump
External Sample Line Filter
LIT Check Valve
Leak Check
Bump Test
Flow Calibration
Midas S2
2 years or as needed
Part Number 780248, every 3-6 months
Part Number 1991-0147, every 3-6 months
Part Number 1830-0055, every 3-6 months
2 years or as needed
Leak Check every 6 months or after replacing any component.
6 months
Flow Calibrate after pump, internal and external filter replacement.
40
Frequency
User Manual