Instruction manual

Troubleshooting
Troubleshooting Guides
6-2 Model 5030i SHARP Instruction Manual Thermo Fisher Scientific
Table 6–1. Troubleshooting - General Guide
Malfunction Possible Cause Action
No power Main fuses are blown are
missing
Check voltages from power
supply.
Digital electronics defective Check that all boards and
connectors are seated properly.
Replace with spare boards to
isolate the problem.
No automatic filter
change
Reel nuts not tight Tighten reel nuts.
No more filter tape Replace with new filter tape.
Filter not properly adhered or
broken
Adhere filter tape to take-up reel
and wind over itself once.
Filter tape transport drive
motor defective
Replace motor.
Optical tape counter defective Replace optical tape transport
sensor.
Pressure sensor(s)
board do not hold
calibration
Valves closed Verify ΔP valves on rear panel are
in the closed position.
Loose plumbing Verify all plumbing connections.
Pressure board defective Replace pressure printed circuit
board.
Highly variable
concentration
Recorder noise Replace or repair recorder and/or
leads.
Sample concentration varying Run Model 5030i on a zero filter
– if quiet, there is no malfunction.
Foreign material in optical
bench
Clean optical bench.
Digital electronics defective Replace board with a spare
board.
Instrument does not
calibrate properly
System leak Find and repair leak.
Pressure or temperture out of
calibration
Re-calibrate pressure or
temperature.
Digital electronics defective Replace one board at a time with
a spare board to isolate the
defective board.
Flow Verify ΔP valves on rear panel are
in the closed position.
Re-calibrate.
Display is off Wrong contrast setting Adjust contrast setting.