MKS 937B Operation Manual
8
1 Safety Information
1.1 Symbols Used in this Manual and their definitions
CAUTION: Risk of electrical shock.
CAUTION: Refer to manual. Failure to read message could result in
personal injury or serious damage to the equipment or both.
CAUTION: Hot surface.
Calls attention to important procedure, practice, or conditions.
Failure to read message could result in damage to the equipment.
1.2 Safety Precautions
1.2.1 Safety Procedures and Precautions
The following general safety precautions must be observed during all phases of operation of this
instrument. Failure to comply with these precautions or with specific warnings elsewhere in this
manual violates safety standards for the intended use of the instrument and may impair the protection
provided by the equipment. MKS Instruments, Inc. assumes no liability for the customer’s failure to
comply with these requirements.
Properly ground the Controller.
This product is grounded through the grounding conductor of the power cord. To avoid electrical
shock, plug the power cord into a properly wired receptacle before connecting it to the product input
or output terminals. A protective ground connection through the grounding conductor in the power
cord is essential for safe operation.
Upon loss of the protective-ground connection, all accessible conductive parts (including knobs and
controls that may appear to be insulating) can render an electrical shock.
Do not substitute parts or modify the instrument.
Do not install substitute parts or perform any unauthorized modification to the instrument. Return the
instrument to an MKS Calibration and Service Center for service and repair to ensure that all safety
features are maintained.
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