Thermo Scientific 5028i, Инструкция по эксплуатации, Страница: 165 / 330

Troubleshooting
Troubleshooting Guides
Thermo Fisher Scientific Model 5028
i
Instruction Manual 6-3
Malfunction Possible Cause Action
The change of
parameters is not
possible
Keyboard not enabled Enable keyboard through menu.
No mass value ADC defect Change the main circuit board.
Mains are broken Check and repair.
No high voltage value Check HV.
Detector defect Change detector.
No automatic filter
change
Mechanical defect Check filter transport motor and
mechanics. Make sure tape is
adhered to take-up reel and intact.
If pump is not running Check pump power supply and wires.
If the filter change
parameter reaches the FC-
value for the second time,
then, the monitor stops
Adjust filter change parameters.
If three way valve power off Check valve power supply and wires
LCD out of function
or dark
Wrong contrast Adjust contrast.
LCD defect Change LCD.
Connection cables from the
main board are broken
Replace display ribbon cable.
Air flow rate
disturbance or air
flow is too low
Air flow parameters wrong Check air flow rate parameters.
No connection with plug (25)
“pump”
Put in the plug (pump regulation
input).
Pump do not work properly Clean inside parts of pump change.
Three way valve do not
work properly
Change three way valve
Very high pollution or
blocking in the air passage
Clean air passage.
Check D P calibration valve
are in closed position
Close valves.