Instruction manual

Troubleshooting
Troubleshooting Guides
6-4 Model 5030i SHARP Instruction Manual Thermo Fisher Scientific
Malfunction Possible Cause Action
No SHARP
Concentration
Disconnected Scat Det cable Check cable connection.
No Zero Air Flow Rear solenoid valve normally
closed
Check rear panel connection—
replace valve.
Clogged in-line filter or
internal filter
Replace filter.
Pump unplugged Plug in pump.
Internal solenoid valve
normally closed
Check cable connection—replace
valve.
Check zero in bulkhead-tubing
connection
Kinked tube—insert tube.
Check pump exhaust
connection
Insert tube in “Y” fitting or pump.
Check internal “T” fitting for
plug or tubing not connected
Insert blocking port plug connect
tubing.
Ref Det Voltage Low or high source current Check source current level Adjust
to 62–67 mA
Check min and max values/LED
current 65mA
Neph Cal Bad Zero Re-zero
Neph Temp High/Low Check min and max values/
Re-calibrate
Neph RH Low/High Check min and max values/
Re-calibrate
Led Current High/Low Check min and max values/Verify
65mA ± 5mA