Teledyne 6200T - Sulfides Analyzer - Manual (Page 241)

6200T Total Sulfur Analyzer Troubleshooting
Teledyen Analytical Instruments 241
Warning Message Fault Condition Possible Causes
PMT TEMP WARNING PMT temperature is
< 2°C or > 12°C
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
RCELL TEMP
WARNING
Sample chamber
temperature is
< 45°C or > 55°C
Bad reaction cell heater
Bad reaction cell temperature sensor
Bad relay controlling the reaction cell heater
Entire relay board is malfunctioning
I
2 C bus malfunction
REAR BOARD NOT
DET
Mother Board not detected
on power up. Warning only appears on serial I/O COMM port(s)
Front panel display will be frozen, blank or will not respond.
Massive failure of mother board.
SAMPLE FLOW WARN
Sample flow rate is < 500
cc/min or > 1000 cc/min. Failed sample pump
Blocked sample inlet/gas line
Dirty particulate filter
Leak downstream of critical flow orifice
Failed flow sensor/circuitry
SAMPLE PRES WARN Sample Pressure is <10 in-
Hg or
> 35 in-Hg
1
If sample pressure is < 10 in-hg:
o Blocked particulate filter
o
Blocked sample inlet/gas line
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
SAMPLE PRES WARN
Sample Pressure is <10 in-
Hg or
> 35 in-Hg
1
If sample pressure is < 10 in-hg:
o
Blocked particulate filter
o Blocked sample inlet/gas line
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
SYSTEM RESET
The computer has
rebooted.
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 WARNING The UV lamp intensity is <
600mV or > 4995 mV UV lamp is bad
Reference detector is bad or out of adjustment.
Mother board analog sensor input circuitry has failed.
Fogged or damaged lenses/filters in UV light path
A/D converter circuitry failure
Light leak in reaction cell
Shutter solenoid stuck closed
1 Normally 29.92 in-Hg at sea level decreasing at 1 in-Hg per 1000 ft of altitude
(with no flow – pump disconnected).
I MPORTANT I MPACT ON R EADINGS OR D ATA
A failure of the analyzer’s CPU, motherboard or power supplies can
result in any or ALL of the above messages.