Teledyne T640, User Manual

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08354B DCN7877 Teledyne API T640 PM Mass Monitor
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5.
MAINTENANCE AND SERVICE
This section presents the maintenance schedule and procedures.
MAINTENANCE SCHEDULE
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
MAINTENANCE ACTION FREQUENCY REFERENCE
Clean Inlet Monthly, or as needed 5.2.1 or 5.2.2
Check/Adjust PMT with SpanDust™
(measured peak, limit value displayed on
SpanDust™ bottle ± 0.5)
monthly or as needed e.g., high
dust load 4.5
Check Pump Performance (Pump PWM <
80% / Valve PWM value < 85%) monthly 5.2.4
Flow Rate Verification (see below)
T640 Sample Flow: 5.0 LPM
+/- 5% of standard compared to current
reading on T640; (e.g., 4.75 – 5.25 lpm if
T640 reads 5.00).
Monthly 5.2.5
T640x Total Flow: 16.67 LPM
+/- 5% of standard compared to current
reading on T640x. (e.g., 15.87 – 17.54
lpm if T640x reads 16.7).
Monthly 5.2.5
T640x Bypass Flow: 11.67 LPM
+/- 5% of standard compared to reading
on T640x; (e.g., 11.12 – 12.29 lpm if
T640x reads 11.7).
Monthly (As needed if total or
sample flow does not meet criteria.
Use same tolerance as total and
sample flow) 5.2.5
Check for leaks with “zero” filter Monthly or as needed (Acceptance
criteria is 0.0 – 0.2 µg/m
3
)
5.2.8
Inspect and clean optical chamber and
RH/T sensor. every six months or as needed,
e.g., high dust load 5.2.6
Change disposable Filter Unit (DFU) for
5-LPM flow and bypass flow (if installed) Annually, or when Pump PWM
Value approaches 80%. 5.2.3
Inspect inner and outer sample tubes Monthly or as needed 5.2.7