TSI Instruments DustTrak 8540, Operation And Service Manual

Page: 55 / 78

Maintenance 45
f. A Dialog box will appear confirming that you would like to
reset the change date and the cumulative filter concentration.
Click
Yes to reset the cumulative filter concentration to zero.
The Checkout Software will now show zero for the Cum
Filter Mass and the current date for the Filter Change Date.
g. The Checkout software will now show, zero for the Cum
Filter Mass Concentration and the current date for the Filter
Change Date.
Replacing Pump
If the pump stops working
it can be removed and
replaced in the field. See
Quick Start Guide included
with Replacement Pump
(854043) for additional
details (Figure 24).
First remove Photometer
from the Environmental
Enclosure following the
applicable steps:
1. Disconnect all cabling
from photometer.
Figure 24: Replacement pump (854043)
2. Remove inlet column. If inlet column includes a heated inlet,
remove ferrite from the heated inlet cable and carefully pull the
heated inlet cable through the key hole on the mounting ring
when removing the inlet column (Figure 25a).
3. Loosen retainer ring on top of enclosure while holding photometer
(Figure 25b).