Periodic maintenance – ANKOM RD User Manual
Page 8

 Fuse Replacement- Turn off the power and unplug the instrument. 
1. Use a screwdriver to twist (counterclockwise) the gray fuse holder. Remove the holder and 
replace the fuse.
2. Push in and twist (clockwise) to install the new fuse. 
 
 
 
 
 
 
Filter Replacement- 
 
The RD2 HCl filter should be replaced when the maroon bottom filter media of the filter 
degrades or sags below the filter frame. 
 
The effectiveness of the filter can be checked by placing a small beaker of Ammonium 
Hydroxide (NH
4
OH) on top of the filter while samples are drying. If white vapor is present
when drying, the filter is no longer working. A strip of pH paper can also be placed on top of 
the filter when drying. If the paper turns red (not orange), replace the filter. 
 
Generally, the filter should be replaced every 3-6 months depending on usage. 
 
 
 
 
 
 
 
8
Periodic Maintenance
 
Wipe the outside of the instrument with window cleaner or a damp sponge as necessary. Do 
not use Acetone. 
  
 
