Thermo Scientific 5028i, Instruction Manual

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Troubleshooting
Troubleshooting Guides
Thermo Fisher Scientific Model 5028
i
Instruction Manual 6-5
Alarm Message Possible Cause Action
RH/Temperature Alarms –
Ambient RH
Disconnect cable
(external) on rear
panel
Verify cable connection.
Disconnect cable
(internal)
Verify cable connection.
RH/Temperature Alarms –
Sample RH
Disconnected heater Verify cable connection.
RH/Temperature Alarms –
Ambient Temp
Disconnect cable
(external) on rear
panel
Verify cable connection.
Disconnect cable
(internal)
Verify cable connection.
RH/Temperature Alarms –
Flow Temp
Disconnected cable Verify connection to measurement
interface board.
Sensor defective Replace sensor.
RH/Temperature Alarms –
Board Temp
Disconnected cable Verify connection to measurement
interface board.
Sensor defective Replace sensor.
Pressure/Vacuum Alarms
– Barometer Pressure
Disconnected cable Verify cable connections.
Replace board.
Pressure/Vacuum Alarms
– Vacuum
Disconnected
plumbing
Verify plumbing connections.
Disconnected cable Verify cable connection.
Sensor defective Replace pressure board.
Pressure/Vacuum Alarms
– Flow
Disconnected
plumbing
Verify plumbing connections
Disconnected cable Verify cable connection.
Sensor defective Replace pressure board.
D P valve open Verify valve is in close position.
Flow Alarms – Flow Low flow Check that pump is connected.
Verify that both D P valves are in the
closed position.
No flow Verify proportional valve plumbing.
Verify connection to measurement
interface board.
Conc Alarms – Inst PM Conc negative Check heater and Beta counts.
Conc alarm setting Verify conc alarm settings.
Conc Alarms – Avg PM Conc negative Check heater and Beta counts.
Conc alarm setting Verify conc alarm settings.