Troubleshooting And Service; Fault Diagnosis; Table 5-2. Alerts And Recommendations - Teledyne T640 User Manual

5.3.

TROUBLESHOOTING AND SERVICE

5.3.1.

FAULT DIAGNOSIS

Message
System Reset
Sample Flow High
Sample Flow Low
Bypass Flow High
Bypass Flow Low
Sample RH High
Check LED
Check PMT
Sample Flow Slope
OOR
BYPS Flow Slope OOR The Bypass Flow Calibration Slope is
Check Int Pump
Check Ext Pump
Sample Temp Warning
08354A DCN7303
This section provides guidance for resolving fault conditions and possible flow
and calibration problems.
The Alerts log may be useful in diagnosing faults. Table 5-2 lists some of the
Alerts that are triggered by faults, describes their likely causes, and provides
possible solutions.

Table 5-2. Alerts and Recommendations

Description
Warning raised when the system is
reset
The Sample Flow is greater than 5.25
lpm
The Sample Flow is less than 4.75 lpm
The Bypass Flow is greater than 12.25
lpm
The Bypass Flow is less than 11.08 lpm
The Sample RH is above the setpoint
If the LED temperature is equal to the
box temperature, the LED may be OFF
The PMT HV setting is out of range
(800 – 2200)
The Sample Flow Calibration Slope is
Out Of Range
Out Of Range
Check the internal pump if the PWM is >
80
Check the external pump and/or bypass
flow control valve if valve PID > 85
Sample Temperature Warning (>60)
Teledyne API Model T640 PM Mass Monitor
Possible Solution(s)
Normal power cycle occurred? If not,
check external power source.
Check pneumatic fittings.
Re-calibrate flow.
Check pneumatics. Check for
blockages. Re-calibrate flow.
Check pneumatic fittings.
Re-calibrate flow.
Check pneumatics.
Check for blockages. Re-calibrate
flow.
Check if ASC is plugged in.
Check control board if ASC control
LED is illuminated.
Check if water is in the sensor.
Cycle power.
Call Tech Support.
Check Sensor with SpanDust™.
Perform an optical chamber cleaning.
Call Tech Support.
Check pneumatics for leaks.
Re-run flow calibration.
Call Tech Support.
Check pneumatics for leaks.
Re-run flow calibration.
Call Tech Support.
Check pneumatics for blockages.
Check pneumatics for leaks.
Check flow calibration.
Replace pump.
Check pneumatics for blockages.
Check pneumatics for leaks.
Check external pump.
Check flow calibration.
External pump, or bypass flow control
valve may need replacing.
Check ASC (is it latched ON?)
Ensure proper climate and ventilation
for instrument.
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