Safety
3-1
Section 3: Safety
3.1 Safety and information symbols
3.1.1 Equipment symbols
The safety and information symbol stickers placed on Cryomech, Inc. cryocoolers are defined below.
Alternating current. The symbol signifies that alternating current is present.
Internal ground. This symbol represents an internal protective grounding terminal.
Such a terminal must be connected to earth ground prior to making any other
connections to the equipment.
Warning Icon. Refer to the documents that accompany the equipment.
The CE label is placed on a product if the product has been tested for and meets the
safety standards set by the European Community. CE stands for Conformité
Européenne. All pressure equipment bearing the CE label has a maximum
temperature of 94 °C (200 °F) and a maximum pressure 29 barg (425 psig).
The TUV label is placed on a product if the product has been tested for and meets the
safety standards set by the US and Canada. The cTUVus mark is officially recognized
as an equivalent and direct replacement of the UL and CSA marks. Nation Recognized
Testing Laboratories (NRTL) like TÜV Rheinland can test to the same standard and
specifications as those defined by UL and CSA.
Power switch. This symbol designates an in/out or push/push switch.
Read the manual or handbook sign. When this symbol is found on a piece of
equipment, the user should read the whole manual before starting installation or use.
This symbol is found on the compressor package.
3.1.2 Icons in the manual
Definitions of Warning and Caution and Information icons in the manual
Warning Icon. A warning message is used when failure to observe instructions or
precautions could result in injury or death to humans.
Electrical Warning Icon. An electrical warning message is used when failure to observe
instructions or precautions could result in electrical shock or burns to humans.
Caution Icon. A caution message is used when failure to observe instructions or
precautions could result in significant damage to equipment and/or facilities.
Information Icon. The accompanying message contains information to aid the operator
in obtaining the best performance from the equipment or other important information
that does not involve danger to equipment or humans.
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