Checking Pump Performance; Checking The Volume Flow; Figure 5-5. External Dfu, (With 640X Option Only) - Teledyne T640 User Manual

5.2.4.

CHECKING PUMP PERFORMANCE

5.2.5.

CHECKING THE VOLUME FLOW

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4. For 640X Option only: noting its orientation, detach the filter from the quick-
connect fittings and replace with new.

Figure 5-5. External DFU, (with 640X Option only)

5. Ensure the filter(s) is(are) seated snugly with no gaps, and power on the
pump from the Setup>Vars>Pump Control menu.
There is one internal pump in the T640. In addition, the 640X Option has a
separate external pump. The pump(s) and the valve (640X Option only) must
maintain proper flow for measurement accuracy. Check their performance levels
in the Dashboard (If these parameters are not found in the Dashboard, configure
the Dashboard to add them; see Section 3.1.9):
•
Pump PWM should be running between 35% and 80%.
•
Valve PWM should be running between 35% and 85%.
If the performance levels are out of range, refer to Table 5-2 for troubleshooting
guidance.
Check the Sample Flow levels in the Dashboard. (If not found in the Dashboard,
add it through the Dashboard configuration page; see Section 3.1.9). If out of
range (5 LPM, +/- .25 LPM), refer to Table 5-2 for troubleshooting guidance.
For the 640X Option, also check the Bypass Flow levels in the Dashboard. (If not
found in the Dashboard, add it through the Dashboard configuration page; see
Section 3.1.9). If out of range (11.67 LPM, +/- 0.58 LPM), refer to Table 5-2 for
troubleshooting guidance.
Teledyne API Model T640 PM Mass Monitor 57