Ametek ORTEC MOBIUS-B, User Manual, Page: 22 / 28

PROPERTY OF AMETEK, INC. – ORTEC ®
ORTEC
® MÖBIUS™ Recycler HPGe Detector Cooling System
805709F / 1115
16
4. MAINTENANCE
4.1. CLEANING OR REPLACING THE MÖBIUS FILTER
The efficiency of the cryogenic cooler depends on the cooling fan’s ability to remove heat from the system. The
cooling fan pulls air through a filter on the left side of the unit and exhausts that air on the right side of the unit. As the
filter becomes clogged with dust, the cooler becomes less efficient. A less-efficient cooler means the system has to run
at higher power levels, which can adversely affect detector performance due to increased vibration. Therefore, ORTEC
recommends cleaning the filter every 3 months (more often in areas with higher than normal dust levels).
1) Remove mesh screen and filter by hand, as shown in Figure 13, by grabbing the mesh screen and filter in the
center with your fingers and pulling away from the MÖBIUS.
Figure 13. Removing the Mesh Screen and Filter.
2) Clean the air filter thoroughly using dish soap and water. If the air filter is damaged or so dirty that it cannot
be well cleaned, discard and replace it with a new one, available from ORTEC (part number -
SUNP-300112 ).
3) Push the air filter back into the bracket on both sides.
Figure 14a. Installing the Filter
.