Cause A:
Power cord not fully inserted at one end.
Action A:
Insert power plug firmly into power source and analyzer power connecter.
Cause B:
No power at outlet.
Action B:
Plug in another electrical device to test the outlet. If there is no power, contact
an electrician.
Cause C:
Plug prongs bent so that contact not made at outlet.
Action C:
Gently move power plug at outlet while watching power indicator light. If the
indicator light comes on, have electrician replace outlet or plug.
Cause D:
Power cord damaged.
Action D:
Have electrician check cord using a test meter. Replace the cord if defective.
Cause E:
Loose internal connection or broken wire.
Action E:
Call a Micromeritics Service Representative for repair or replacement inform-
ation.
Valves cannot be operated.
Cause:
Cable from computer to the instrument is loose.
Action:
Reconnect the cable.
Vacuum pump is noisy.
Cause A:
Sample tube connector is loose.
Action A:
Tighten fitting. Replace O-ring.
Cause B:
Sample tube O-ring is worn or cracked.
Action B:
Replace O-ring. See
Sample Tube O-ring Replacement on page 5 - 14
.
Cause C:
Sample tube is cracked.
Action C:
Replace with new sample tube.
Cause D:
No sample tube loaded on a selected port.
Action D:
Install plug or empty sample tube.
Cause E:
Gas inlet valve open while vacuum valve open.
Action E:
Close gas inlet valve.
5 Troubleshooting
Gemini VII Keypad Operator Manual
239-42801-01 (Rev E) — July 2021
5 - 3
