1 Installation Overview
SAFE SERVICING
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:
n Electrical. Servicing or repair could require opening the outer panels and exposing ener-
gized electrical components.
n Liquid nitrogen. See Dewar Precautions on page7 - 14.
n Elevator. Could pose a pinching hazard when lowering. Maintenance may require the elev-
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:
n Electrical. The majority of electrical components operate at low voltage (24V or less) and
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.
n Elevator. Moves very slowly. It is normally operated from the computer attached to the
instrument so the operator is physically distanced from the instrument. The safety shield
door of the instrument should be closed during elevator operation. Use of the manual switch
on the instrument requires particular attention and care by the service personnel.
Verification of the safe state of the instrument after repair:
n Elevator must be in the down position.
n Sample tubes must be removed to prevent accidental breakage. Ports should be capped
(recommended).
n Safety shield door is closed (recommended).
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Gemini VII 2390 Installation Instructions and Checklist
239-42870-02 Rev (B) — May 2021
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