Micromeritics GEMINI VII Operator's Manual page 189

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
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: With manual control enabled, use the instrument schematic to close gas inlet
valve.
Gemini VII Operator Manual
239-42828-01 (Rev H ) — May 2021
Sample Tube O-ring Replacement on page 10 -
10 Troubleshooting
25.
10 - 3