Lakeshore Learning Materials 622 - Manual (Page 9)

Lake Shore Model 620/622/623/647 Magnet Power Supply User’s Manual
Forward vii
BEFORE YOU OPERATE THE EQUIPMENT
Train personnel in proper emergency measures such as electrical power shut off, fire department notification,
fire extinguishing, and personnel and records evacuation. Here is a list of suggested personnel safety
considerations:
• Ground Fault Interrupter (GFI) AC circuits
• Fire Extinguisher
• Magnetic Field Warnings
• Emergency Lighting
Locate in the immediate vicinity fire extinguisher(s) that extinguish all three classes of fires: A, B, and C. Class
A is ordinary combustibles like wood, paper, rubber, many plastics, and other common materials that burn
easily. Class B is flammable liquids like gasoline, oil, and grease. Class C is energized electrical equipment
including wiring fuse boxes, circuit breakers, machinery, and appliances. Do not use chemical extinguishers
even though they are less expensive and cover all classes of fires. They may damage electronic equipment.
Use a Carbon Dioxide or Halon fire extinguisher.
During the planning stage, consult local experts, building authorities, and insurance underwriters on locating
and installing sprinkler heads, fire and smoke sensing devices, and other fire extinguishing equipment.
Even where not required by code, install some type of automatic, battery-operated emergency lighting in case
of power failure or fire.
SAFETY SUMMARY
Observe the following general safety precautions during all phases of operation, service, and repair of this
instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual
violates safety standards of design, manufacture, and intended use of the instrument. Lake Shore Cryotronics,
Inc. assumes no liability for the customer's failure to comply with these requirements.
Ground the Instrument
To minimize shock hazard, connect the instrument chassis and cabinet to an electrical ground. The instrument
is equipped with a three-conductor AC power cable. Plug this cable into either an approved three-contact
electrical outlet or a three-contact adapter with the grounding wire (green) firmly connected to an electrical
ground (safety ground) at the power outlet. The power jack and mating plug of the power cable meet
Underwriters Laboratories (UL) and International Electrotechnical Commission (IEC) safety standards.
Do Not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable gases or fumes. Operating any electrical
instrument in such an environment constitutes a definite safety hazard.
Keep Away from Live Circuits
Operating personnel must not remove instrument covers. Refer component replacement and internal
adjustments to qualified maintenance personnel. Do not replace components with power cable connected. To
avoid injuries, always disconnect power and discharge circuits before touching them.
Do Not Substitute Parts or Modify Instrument
Do not install substitute parts or perform any unauthorized modification to the instrument. Return the
instrument to an authorized Lake Shore Cryotronics, Inc. representative for service and repair to ensure that
safety features are maintained.
Dangerous Procedure Warnings
A WARNING heading precedes potentially dangerous procedures throughout this manual. Instructions in the
warnings must be followed.