Cleaning The T640 Tsp Inlet; Table 11-1 Maintenance Schedule - Teledyne T640 Standard Operating Procedure

Maintenance Action
Check for leaks with zero filter
Clean Inlet and PM Well
10
Check/Adjust PMT with SpanDust 1.28
(measured peak, limit value displayed on
bottle +/- 0.5)
Check Pump Performance
Ambient Pressure
Ambient Temperature
Flow rate checks (see below)
Sample flow: 5.0 lpm
Inspect and clean optical chamber and
relative humidity/temperature (RH/T) sensor
Change Disposable Fitler Unit (DFU) for 5-
lpm sample flow and 11.67 lpm bypass flow
Inspect inner and outer sample tubes

11.1 Cleaning the T640 TSP Inlet

For this procedure, ensure the channels are "In Maintenance"

Table 11-1 Maintenance Schedule

Tolerance
Stated as "Zero", (i.e., 0.0 for each PM
metric)
NA
11.3 +/- 0.5 (10.8 to 11.8)
1
(PWM/PID value < 80%)
+/- 10 mm Hg
+/- 2 C
+/- 4% of standard; +/-5% of flow rate
design (4.75 – 5.75 lpm). For our
purposes use +/-5% of flow rate design.
NA
NA
(if installed)
NA
14
DEP 03-21
Revision No. 0
November 2017
Frequency
Monthly
Quarterly for inlet
Monthly for PM well
10
Monthly at +/-0.5. Avoid over
performing this procedure. If
problems persist, wait 10 minutes
and retry.
Monthly
Monthly
Monthly
Monthly
Every six months or as needed, e.g.,
high dust load
Quarterly or when Pimp PVM
value approaches 80%.
Monthly or as needed