Vaisala DM70 - Manual (Page 61)

Chapter 7 ____________________________________________________Sampling from Processes
7. Put the system back into the briefcase.
Changing the Filter
The filter should be changed regularly as a part of maintenance.
However, the need for changing the filter depends on how dirty the
process is. The filter may need to be changed after several hundreds of
hours or after years. A dry filter may cause increased response times.
A new filter can be ordered from Vaisala (see section Accessories on
page 89).
1. To change the filter, lift the sampling system out of the
briefcase. See Figure 26 on page 57.
2. Unscrew the nut of sample cell. See Figure 28 on page 59.
3. Turn the sampling cell right side up again and undo the nut of
the filter cell.
4. Replace the filter and tighten the nuts. The direction of the
arrow on the filter must match the direction of the arrow on
DSS70A. See Figure 28 below.
5. Put the sampling system back into the briefcase.
0403-051
Figure 28 Changing the Filter
The following numbers refer to Figure 28 above.
1 = Filter direction
2 = Nuts of the filter
VAISALA _______________________________________________________________________ 59