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Case Studies > Protect Precision Equipment From Heat Generated Inside Control Cabinets - Recommendation for Preventive Maintenance
Protect Precision Equipment From Heat Generated Inside Control Cabinets - Recommendation for Preventive Maintenance
Issue: Cooling Fan Stopped Without You Noticing
When Do You Need to Perform Maintenance on the Cooling Fan?
"I'll replace it after it stops."
"I don't expect it to stop in the first place."
There are probably many who feel this way.
In such a situation, the fan stopped working without their knowledge, and the precision equipment was not being cooled down
"When I opened the control cabinet, warm air came out..."
Challenge:
- If multiple fans are used, a common situation is that each fan is checked one by one during each maintenance, or all fans are replaced at regular intervals.
- When the cooling fan stops the temperature inside the control cabinet rises, causing abnormal heat generation alarms from precision equipment and possibly stopping the production lines
- Heat generation may reduce the life span of precision equipment
Solution: Install Precision Equipment in a Control Cabinet in a Safe Environment and Ensure Stable Production
- Fans with alarm functions provided by Oriental Motor monitors the rotation of the fan and outputs an alarm externally when an abnormal rotation occurs.
- From "a fan that just needs to blow air" to "a fan that can be trusted to cool with peace of mind."
- From the standpoint of preventive maintenance, it is recommended to use them as needed, depending on the situation.
- Installing a fan with an alarm function
- Enables early detection of cooling abnormalities inside the control cabinet
- Only fans that have reached the end of their life span can be replaced without waste
- Life of precision instruments can be extended
Introducing More Products That Make Maintenance Easier
Long life type fans are also available for fans with alarm functions, which can be used approximately 2.8 times longer than the standard type. More details in the second half!
Features of Fans With Alarm Functions
Because fans with alarm functions monitor the fan rotation speed, those fans can output an alarm when the rotation speed decreases or stops due to end of life or contamination with foreign matter.
Therefore, the fan can be replaced prior to damaging equipment. This contributes to improved equipment reliability by minimizing the impact of reduced cooling capacity on the equipment. Here is a summary of the easy-to-use low-speed alarm and the stall alarm. *1
Alarm Type |
Without an Alarm Function Stall Alarm |
Recommended |
|---|---|---|
Description of Functions |
Alarm signals output when fan rotation stops |
Alarm signals output when fan rotation speed decreases |
 |
 |
|
Why We Recommend This |
• Prevents breakdown of precision equipment |
• A replacement can arranged and installed before fan shutdown |
*1 Pulse sensor type is also available. Series equipped with this function can be checked from the home page.
*2 For DC Input Type
You Can Choose From Series Equipped With Each Alarm.
What We Recommend for Those Who Want to Make Maintenance Easier
Long Life Type Fans Offered
It helps to reduce total cost and improve reliability in the control cabinet.
- It can be used about 2.8 times as long
- Costs reduced by 55%
Service Life Comparison Between Conventional Product and Long-Life Fan (Example)
Long-life fans last approximately 11 years, or 2.8 times longer than conventional products, which last approximately 4 years.
Total Cost Simulation (Example)**
*Estimated life is 35,000 hours at an ambient temperature of 60 °C. What is the estimated life? This is an estimated value using the formula for bearing grease lifespan calculation. The estimated life varies depending on the product name.
**Calculated with daily operating hours at 24 hours, operating days per year at 365 days for 10 years, the electricity-CO2 emission factor at 0.000559 t/kWh, and electricity rate of 15 JPY/kWh (converted to USD dollars as of May 28, 2026).
Input Power, Electricity Rates, and CO2 Emissions for Standard Type and Long Life Type Compared
Input Power Comparison* |
Annual Electricity Rate Comparison* |
Annual CO2 Emissions Comparison* |
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 |
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* Calculation Conditions
Number of Units Used: 10; Operating Hours: 12 hours/day; Annual Operation: 240 days/year
Electricity Rate: $0.094 USD/kWh; CO2 Emissions: 0.000559 t/kWh
Calculated electricity-CO2 emission factor at 0.000559 t/kWh, and electricity rate of 15 JPY/kWh
Energy-Saving Products MRE Series
MRE Series
AC long-life axial flow fans MRE10 and 12 types are more energy-efficient than existing MU Series of the same size.
Engineering Notes
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