Troubleshooting - Alarm Messages - Thermo Scientific 49i Instruction Manual

Troubleshooting
Troubleshooting Guides
6-4 Model 49i Instruction Manual
Table 6-1. Troubleshooting - General Guide, continued
Malfunction Possible Cause
Dirty system
Solenoid defective
Slow response Averaging time
Contaminated optical bench
Table 6-2. Troubleshooting - Alarm Messages
Alarm Message Possible Cause
Alarm - O Lamp Temp Defective lamp heater
3
Alarm - Lamp Temp Defective lamp heater
Alarm - Bench Temp Faulty fan
Dirty fan filter
Alarm - Pressure High pressure indication
Alarm - Flow A Flow low
Alarm - Flow B
Action
Clean cells and flow
components
Perform "Confirmation of
Leak Through Solenoid" test
described in the "Preventive
Maintenance" chapter.
Verify averaging time is set
properly
Clean bench and then
condition system overnight
Action
Replace ozonator, or lamp
driver board, or lamp
assembly.
Replace bench lamp driver
board or lamp assembly.
Replace fan if not operating
properly.
Clean or replace foam filter,
refer to "Preventive
Maintenance" chapter in
this manual.
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.
Thermo Fisher Scientific