Teledyne API Ultrafine Particle Monitor - Model 651 Maintenance, Service, and Troubleshooting
07506C DCN6727 81
Changing the Filters
The Model 651 contains three filters. The filters should be replaced
as part of the annual service.
To replace a filter, follow these instructions:
1. Turn off the power to the Model 651.
2. Remove the instrument cover.
3. Remove the filter from the filter clip.
Transport
Flow Filter
Auxiliary
Flow Filter
Sample Flow
Filter
Figure 9-5
Location of Filters