2
AB-7329
Safety Precautions
Please read instructions carefully and use the product 
as specied in this manual. Be sure to keep this manual 
nearby for quick reference.
Restrictions on Use
This product was developed, designed, and manufac-
tured for general air conditioning use.
Do not use the product in a situation where human life 
may be at risk or for nuclear applications in radiation 
controlled areas. If you wish to use the product in a radi-
ation controlled area, please contact Azbil Corporation.
Particularly when the product is used in the following 
applications where safety is required, implementation of 
fail-safe design, redundant design, regular maintenance, 
etc., should be considered in order to use the product 
safely and reliably. 
• Safety devices for protecting the human body 
• Start/stop control devices for transportation machines 
• Aeronautical/aerospace machines
For system design, application design, instructions 
for use, or product applications, please contact Azbil 
Corporation.
Azbil Corporation bears no responsibility for any result, 
or lack of result, deriving from the customer's use of the 
product.
  Caution for Instrumentation Design
Considering unexpected failures or contingencies, 
be sure to design and check safety of the system and 
equipment.
  Recommended Design Life
It is recommended that this product be used within the 
recommended design life.
The recommended design life is the period during which 
you can use the product safely and reliably based on 
the design specications.
If the product is used beyond this period, its failure ratio 
may increase due to time-related deterioration of parts, 
etc.
The recommended design life during which the product 
can operate reliably with the lowest failure ratio and 
least deterioration over time is estimated scientically 
based on acceleration tests, endurance tests, etc., 
taking into consideration the operating environment, 
conditions, and frequency of use as basic parameters.
The recommended design life of this product is 10 
years.
The recommended design life assumes that mainte-
nance, such as replacement of the limited life parts, is 
carried out properly.
Refer to the section on maintenance in this manual.
  Warnings and Cautions
WARNING
Alerts users that improper 
handling may cause death or 
serious injury.
CAUTION
Alerts users that improper 
handling may cause minor 
injury or material loss.
  Signs
Alerts users to possible hazardous condi-
tions caused by erroneous operation or 
erroneous use. The symbol inside  
indicates the specic type of danger. (For 
example, the sign on the left warns of the 
risk of electric shock.)
Noties users that specic actions are 
prohibited to prevent possible danger. The 
symbol inside  graphically indicates the 
prohibited action. (For example, the sign 
on the left noties that disassembly is 
prohibited.)
Instructs users to carry out a specic oblig-
atory action to prevent possible danger. 
The symbol inside 
 graphically indicates 
the actual action to be carried out. (For 
example, the sign on the left indicates 
general instructions.)
 WARNING
Install this product in a place, such as a 
control cabinet, where only the adminis-
trator has access to it. 
Otherwise there is a danger of electric 
shock.
Be sure to ground this product with a 
ground resistance of less than 100 Ω. 
Improper grounding may cause electric 
shock or malfunction.
Before wiring or maintenance, be sure to 
turn o the power to this product. 
Failure to do so may result in electric shock 
or device failure.
Do not insert conductive objects through 
product ventilation holes.
Doing so may cause electric shock.
Do not touch electrically charged parts.  
Doing so may cause electric shock.