Thermo Scientific iS5N Series User Manual page 38

Table of Contents

Maintenance

Maintaining Your Instrument

Nicolet iS5N Spectrometer User Guide

Note If you need to replace the humidity indicator, you must order new desiccant

canisters. A new humidity indicator is included with the new desiccant canisters.

NOTICE

• If you plan to dry and reuse saturated desiccant canisters, make sure you have fresh

desiccant canisters to place in the instrument while the saturated canisters dry.

• Do not leave canisters in the oven for more than three hours and do not exceed a

temperature of 150 °C (300 °F). Allow the canisters to cool completely in a dry

environment before you install them in the cartridge.

• Make sure the insulated cloth or hot pad you use to handle the regenerated desiccant

canisters is not contaminated with substances that could be absorbed by the desiccant

and subsequently released into the instrument.



To regenerate the desiccant

1. Place the saturated desiccant canisters in a vented oven at 150 °C (about 300 °F) for three

hours.

CAUTION Avoid burn hazard. Use an insulated cloth or hot pad to handle the heated

desiccant canisters, and always wait until the canisters have cooled to room temperature

before installing them in the spectrometer.

2. Use an insulated cloth or hot pad to remove the desiccant canisters from the oven.

Place the hot canisters in a dry environment such as a desiccator and allow them to cool

to room temperature. As soon as the canisters reach room temperature, you must either

install them in the instrument or seal them in an airtight container or bag. Otherwise,

they will absorb moisture from the air in the room and quickly become saturated again.