Lake Shore 625, Руководство пользователя

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Lake Shore Model 625 Superconducting MPS User’s Manual
7-6 Service
7.8.2 Handling Electrostatic Discharge Sensitive Components
Observe all precautions necessary to prevent damage to ESDS components before attempting installation. Bring the
device and everything that contacts it to ground potential by providing a conductive surface and discharge paths. As a
minimum, observe these precautions:
1. De-energize or disconnect all power and signal sources and loads used with unit.
2. Place unit on a grounded conductive work surface.
3. Ground technician through a conductive wrist strap (or other device) using 1 M

series resistor to protect operator.
4. Ground any tools, such as soldering equipment, that will contact unit. Contact with operator's hands provides a
sufficient ground for tools that are otherwise electrically isolated.
5. Place ESDS devices and assemblies removed from a unit on a conductive work surface or in a conductive container.
An operator inserting or removing a device or assembly from a container must maintain contact with a conductive
portion of the container. Use only plastic bags approved for storage of ESD material.
6. Do not handle ESDS devices unnecessarily or remove from the packages until actually used or tested.
7.9 ENCLOSURE BOTTOM REMOVAL AND REPLACEMENT
WARNING: To avoid potentially lethal shocks, discharge the magnet, turn off the power supply, and disconnect it
from AC power line before performing this procedure. Only qualified personnel should perform this
procedure.
REMOVAL
1. Set power switch to Off (
O
) and disconnect power cord from rear of unit.
2. Turn power supply over to gain access to the bottom panel.
3. Use 5/64 hex key to remove the screw that attaches the bottom panel to the front panel.
4. Use a Phillips head screwdriver to remove the 7 screws that hold the bottom panel on including the 4 screws that are
used to attach the feet.
5. Carefully remove the bottom panel from the unit.
INSTALLATION
1. Carefully place the bottom panel on the unit.
2. Use 5/64 hex key to install the screw that attaches the bottom panel to the front panel.
3. Attach the 4 feet to the bottom of the unit.
4. Use a Phillips screwdriver to tighten the 7 screws attaching the bottom panel to unit including the 4 screws that are
used to attach the feet.
6. Connect power cord to rear of unit and set power switch to On ( l ).