Safe Servicing - Micromeritics GEMINI VII KEYPAD Operator's Manual

S S
AFE ERVICING
Do not modify this instrument without the authorization of a Micromeritics service per-
sonnel.
To ensure safe servicing and continued safety of the instrument after servicing, service personnel
should be aware of the following risks:
Product specific risks that may affect service personnel:
Electrical. Servicing or repair could require opening the outer panels and exposing ener-
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gized electrical components.
Liquid nitrogen. See
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Elevator. Could pose a pinching hazard when lowering. Maintenance may require the elev-
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ator screw to be greased. The service engineer can use a manual switch on the elevator
assembly to cycle the elevator to distribute the grease to permit safe servicing and con-
tinued safety of the equipment after servicing.
Protective measures for these risks:
Electrical. The majority of electrical components operate at low voltage (24V or less) and
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pose low risk when energized. Maintenance, troubleshooting, and repairs should be per-
formed with the instrument de-energized whenever possible, in accordance with standard
electrical safety guidelines.
Elevator. Moves very slowly. The safety shield door of the instrument should be closed dur-
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ing elevator operation. Use of the manual switch on the instrument requires particular atten-
tion and care by the service personnel.
Verification of the safe state of the instrument after repair:
Elevator must be in the down position.
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Sample tubes must be removed to prevent accidental breakage. Ports should be capped
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(recommended).
Safety shield door is closed (recommended).
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Gemini VII Keypad Operator Manual
239-42801-01 (Rev E) — July 2021
Dewar Precautions on page 2 -

Safe Servicing

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