Lamp Setting - Thermo Scientific 49i Instruction Manual

Pump Pressure

Lamp Setting

Thermo Fisher Scientific
The Pump Pressure screen (read only) is used to test the pump. The
solenoids are energized such that there is no flow in Cell B. The flow rate
for Cell B drops to zero and the pressure reading should drop below 390
mmHg in less than 20 seconds. This indicates the effectiveness of the
internal pump. After 20 seconds, if the pressure is greater than 390 mmHg
or the flow is greater than 0.010 LPM, the words "PUMP PROBLEM
DETECTED" appears. After 20 seconds, if the pressure is less than 390
mmHg and the flow is less than 0.010 LPM, the words "PUMP OK"
appears.
• In the Main Menu, choose Service > Pressure Check > Pump Pressure.
PUMP PRESSURE: 753.4 mmHg
TESTING, WAIT 20 SECS
RANGE AVG
The Lamp Setting screen is used to adjust the detector intensities. The
display shows the intensities of Cell A and Cell B. The next line of the
display shows the current lamp setting. Adjust the lamp setting until the
intensities are about 100 kHz.
Note This adjustment should only be performed by an instrument service
technician.
• In the Main Menu, choose Service > Lamp Setting.
• Use and
• Press to save the new lamp setting.
0.010 LPM
DIAGS ALARM
to increment or decrement the numeric value.
Model 49i Instruction Manual
Operation
Service Menu
3-85