S
AFE
S
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:
n
Electrical
. Servicing or repair could require opening the outer panels and exposing ener-
gized electrical components.
n
Liquid nitrogen
. See
Dewar Precautions on page 2 - 13
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. The safety shield door of the instrument should be closed dur-
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:
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).
Safe Servicing
Gemini VII Keypad Operator Manual
239-42801-01 (Rev E) — July 2021
5 - 5
