Safety terminology and symbols
About safety messages
It is extremely important that you read, understand, and follow the safety messages and
regulations carefully before handling the product. They are published to help prevent
these hazards:
• Personal accidents and health problems
• Damage to the product
• Product malfunction
Hazard levels
Hazard level
Indication
DANGER:
A hazardous situation which, if not avoided, will result in
death or serious injury
WARNING:
A hazardous situation which, if not avoided, could result
in death or serious injury
CAUTION:
A hazardous situation which, if not avoided, could result
in minor or moderate injury
NOTICE:
• A potential situation which, if not avoided, could
result in undesirable conditions
• A practice not related to personal injury
Hazard categories
Hazard categories can either fall under hazard levels or let specific symbols replace the
ordinary hazard level symbols.
Electrical hazards are indicated by the following specific symbol:
Electrical Hazard:
These are examples of other categories that can occur. They fall under the ordinary hazard
levels and may use complementing symbols:
• Crush hazard
• Cutting hazard
• Arc flash hazard
User safety
General safety rules
These safety rules apply:
• Always keep the work area clean.
• Pay attention to the risks presented by gas and vapors in the work area.
Introduction and Safety
NRF
™
-25,36,45/NBF
™
-25,36, and 45 Circulator Installation, Operation, and Maintenance Manual
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