Table 6-2. Troubleshooting - Alarm Messages - Thermo Scientific 410i Instruction Manual

Thermo Fisher Scientific
Table 6–2. Troubleshooting - Alarm Messages
Alarm Message
Alarm - Internal Temp
Alarm – Chamber Temp
Alarm - Pressure
Alarm - Flow
Alarm - Bias voltage
Alarm - AGC intensity
Possible Cause
Check fan operation
Check fan filter
Chamber temperature below
set point of 50 °C
High pressure indication
Flow low
Defective measurement
interface board
Defective pre-amp board
Pre-amp Gain not set
properly
Defective measurement
interface board
Troubleshooting
Troubleshooting Guides
Action
Replace fan if not operating
properly.
Clean or replace foam filter,
refer to "Preventive
Maintenance" chapter in this
manual.
Check 10K ohm thermistor,
replace if bad.
Check temperature control
board to insure the LEDs are
coming on. If not,
temperature control board
could be defective.
Check the pump for a tear in
the diaphragm, replace with
pump repair kit if necessary.
Refer to "Preventive
Maintenance" chapter in this
manual. Check that
capillaries are properly
installed and O-rings are in
good shape. Replace if
necessary. Check flow
system for leaks.
Check sample capillary
(0.015 inch ID) for blockage.
Replace as necessary.
If using sample particulate
filter make sure it is not
blocked. Disconnect sample
particulate filter from the
sample bulkhead, if flow
increases, replace the filter.
Replace measurement
interface board.
Replace pre-amp board.
Check Gain adjustment.
Replace measurement
interface board.
Model 410i Instruction Manual 6-3