Lake Shore Model 218 Temperature Monitor User’s Manual
1-8
Introduction
1.3.2 Safety
Summary
Observe these general safety precautions during all phases of instrument operation, service, and
repair. Failure to comply with these precautions or with specific warnings elsewhere in this manual
violates safety standards of design, manufacture, and intended instrument use. Lake Shore
Cryotronics assumes no liability for Customer failure to comply with these requirements.
The Model 218 protects the operator and surrounding area from electric shock or burn, mechanical
hazards, excessive temperature, and spread of fire from the instrument. Environmental conditions
outside of the conditions below may pose a hazard to the operator and surrounding area.
• Indoor
use.
• Altitude to 2000 m.
• Temperature for safe operation: 5 to 40 °C.
• Maximum relative humidity: 80% for temperature up to 31 °C decreasing linearly to 50% at 40 °C.
• Power supply voltage fluctuations not to exceed ±10% of the nominal voltage.
• Overvoltage
category
II.
• Pollution degree 2.
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 the power cable into an
approved three-contact electrical outlet or use 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.
Ventilation
The instrument has ventilation holes in its top and bottom covers. Do not block these holes when
the intrument is turned on.
Do Not Operate In An Explosive Atmosphere
Do not operate the instrument in the presence of flammable gases or fumes. Operation of 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. 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.
Cleaning
Do not submerge instrument. Clean only with a damp cloth and mild detergent. Exterior only.
1.3.3 Safety
Symbols
Summary of Contents for 218S
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