Maintenance And Service; Maintenance Schedule; Table 5-1. Maintenance Schedule - Teledyne T640 User Manual

5.

MAINTENANCE AND SERVICE

5.1.

MAINTENANCE SCHEDULE

Maintenance Action
Clean Inlet
Check/Adjust PMT with SpanDust™
(measured peak, limit: 0.0 ± 0.5)
Check Pump Performance (PWM/PID
value < 80%)
Check volume flow.
Use NIST-traceable flow transfer standard
device:
5.0 LPM ± 0.15 LPM (for T640) and
11.67 LPM ± 0.5 LPM (for 640X opt)
(Standard Ambient Temperature and
Pressure).
Check for leaks
Inspect and clean optical chamber and
RH/T sensor.
Change isposable Filter Unit (DFU) for 5-
lpm flow and bypass flow (if installed)
Inspect sampling line
08354A DCN7303
8. Allow 30 seconds for the Peak Channel reading in this screen to respond,
and if it is not at 11.3, ± 0.5, repeat the process. This could take several tries
over a long period when conducted in a humid environment.
9. Once the Peak Channel reading is at 11.3, ± 0.5, reattach the sample inlet
and press the Stop button to stop the adjustment process and resume normal
data acquisition.
As a part of routine system management, preventive maintenance includes
cleaning, inspections, adjustments and calibrations. Table 5-1 provides a list of
actions to take and their frequencies. Section 5.2 describes procedures.

Table 5-1. Maintenance Schedule

Teledyne API Model T640 PM Mass Monitor
Frequency
monthly
monthly or as needed e.g., high
dust load
monthly
quarterly
quarterly or as needed (Pump PWM
or Valve PWM exceeds 85%)
every six months or as needed, e.g.,
high dust load
annually or when Pump PWM Value
exceeds 80%.
annually or as needed
Reference
5.2.1 or 5.2.2
4.1.4
5.2.4
5.2.5
5.2.8
5.2.6
5.2.3
5.2.7
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