Teledyne T101 Operation Manual page 219

Teledyne ML - T101 Operation Manual
WARNING
FAULT CONDITION
MESSAGE
IZS TEMP On units with IZS
WARNING options installed: The
permeation tube
temperature is Sample
chamber temperature
is
< 45°C or > 55°C
PMT DET
PMT detector output is
WARNING > 4995 mV
PMT TEMP
PMT temperature is
WARNING Sample chamber
temperature is
< 2°C or > 12°C
RCELL TEMP
Sample chamber
WARNING
temperature is
< 45°C or > 55°C
Warning Fault C ondition
Message
REAR BOARD Mother Board not
NOT DET detected on power up.
Relay BOARD The C PU cannot
WARN communicate with the
Relay Board.
SAMPLE FLOW
Sample flow rate is <
WARN 500 cc/min or > 1000
cc/min.
SAMPLE PRES Sample Pressure is <10
WARN
in-Hg or
> 35 in-Hg
SYSTEM RESET The computer has
rebooted.
UV LAMP The UV lamp intensity is
WARNING
< 600mV or > 4995 mV
1
N ormally 2 9.92 in-Hg at s ea level dec reasing at 1 in- H g per 1 000 ft of altitude
(with no flow – pump dis c onnected).
Bad IZS heater
Bad IZS temperature sensor
Bad relay controlling the IZS heater
Entire relay board is malfunctioning
2
I C buss malfunction
Failure of thermistor interface circuitry on motherboard
Failed PMT
Malfunctioning PMR preamp board
A/D converter circuitry failure
Bad PMT thermo-electric cooler
Failed PMT TEC driver circuit
Bad PMT preamp board
Failed PMT temperature sensor
Loose wiring between PMT temperature sensor and PMT Preamp board
Malfunction of analog sensor input circuitry on motherboard
Bad reaction cell heater
Bad reaction cell temperature sensor
Bad relay controlling the reaction cell heater
Entire relay board is malfunctioning
2
I C buss malfunction
Possible Causes
Warning only appears on serial I/O com port(s)
Front panel display will be frozen, blank or will not respond.
Massive failure of mother board.
2
I C buss failure
Failed relay board
Loose connectors/wiring
Failed sample pump
Blocked sample inlet/gas line
Dirty particulate filter
Leak downstream of critical flow orifice
Failed flow sensor/circuitry
If sample pressure is < 10 in-hg:
o Blocked particulate filter
o Blocked sample inlet/gas line
1
o Failed pressure sensor/circuitry
If sample pressure is > 35 in-hg:
o Blocked vent line on pressurized sample/zero/span gas supply
o Bad pressure sensor/circuitry
This message occurs at power on.
If it is confirmed that power has not been interrupted:
Failed +5 VDC power,
Fatal error caused software to restart
Loose connector/wiring
UV lamp is bad
Reference detector is bad
Motherboard analog sensor input circuitry has failed.
Fogged or damaged lenses/filters in UV light path
A/D converter circuitry failure
Troubleshooting & Service
POSSIBLE CAUSES
215