SAFETY CAUTION

The important contents concerned to the safety are described on the product itself and on this Service Manual.

Please read this Service Manual after understanding the described items thoroughly in the following contents, and keep them.

WARNING

 

Before troubleshooting or repair work, check the earth wire is connected to the earth

 

terminals of the main unit, otherwise an electric shock is caused when a leak occurs.

Check earth wires.

If the earth wire is not correctly connected, contact an electric engineer for rework.

 

 

 

 

Do not modify the products.

 

Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury.

Prohibition of modification.

 

 

 

 

For spare parts, use those specified (∗ ).

 

If unspecified parts are used, a fire or electric shock may be caused.

Use specified parts.

∗ : For details, refer to the parts list.

 

 

 

Before troubleshooting or repair work, do not bring a third party (a child, etc.) except

 

the repair engineers close to the equipment.

Do not bring a child

It causes an injury with tools or disassembled parts.

Please inform the users so that the third party (a child, etc.) does not approach the equipment.

close to the equipment.

 

 

 

Connect the cut-off lead cables with crimp contact, etc, put the closed end side

 

upward and then apply a water-cut method, otherwise a leak or production of fire is

Insulating measures

caused at the users’ side.

 

When repairing the refrigerating cycle, take the following measures.

1)Be attentive to fire around the cycle. When using a gas stove, etc, be sure to put out fire before work; otherwise the oil mixed with refrigerant gas may catch fire.

 

2) Do not use a welder in the closed room. When using it without ventilation, carbon

No fire

monoxide poisoning may be caused.

 

3)Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may catch the inflammables.

 

Check the used refrigerant name and use tools and materials of the parts which

 

match with it.

 

For the products which use R410A refrigerant, the refrigerant name is indicated at a

 

position on the outdoor unit where is easy to see. To prevent miss-charging, the route of the

 

service port is changed from one of the former R22.

 

For an air conditioner which uses R410A, never use other refrigerant than R410A.

 

For an air conditioner which uses other refrigerant (R22, etc.), never use R410A.

 

If different types of refrigerant are mixed, abnormal high pressure generates in the refriger-

 

ating cycle and an injury due to breakage may be caused.

 

Do not charge refrigerant additionally.

 

If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in

 

the refrigerating cycle changes resulted in change of air conditioner characteristics or

 

refrigerant over the specified standard amount is charged and an abnormal high pressure is

 

applied to the inside of the refrigerating cycle resulted in cause of breakage or injury.

Refrigerant

Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute

vacuuming, and then newly recharge the specified amount of liquid refrigerant. In this time,

 

 

never charge the refrigerant over the specified amount.

 

When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant

 

or air other than R410A into the specified refrigerant.

 

If air or others is mixed with the refrigerant, abnormal high pressure generates in the

 

refrigerating cycle resulted in cause of injury due to breakage.

 

After installation work, check the refrigerant gas does not leak.

 

If the refrigerant gas leaks in the room, poisonous gas generates when gas touches to fire

 

such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.

 

Never recover the refrigerant into the outdoor unit.

 

When the equipment is moved or repaired, be sure to recover the refrigerant with recover-

 

ing device. The refrigerant cannot be recovered in the outdoor unit; otherwise a serious

 

accident such as breakage or injury is caused.

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Toshiba MMU-AP0071MH, MMU-AP0181MH, MMU-AP0151MH, MMU-AP0091MH, MMU-AP0121MH service manual Safety Caution
Page 2 Page 4

MMU-AP0181MH, MMU-AP0071MH, MMU-AP0091MH, MMU-AP0151MH, MMU-AP0121MH specifications

The Toshiba MMU-AP series, consisting of models MMU-AP0121MH, MMU-AP0151MH, MMU-AP0091MH, MMU-AP0071MH, and MMU-AP0181MH, represents a significant advancement in the realm of power management and energy efficiency for a variety of applications. These modules are designed to optimize performance while ensuring minimal energy consumption, making them suitable for both commercial and industrial uses.

One of the standout features of the MMU-AP series is its intelligent power management technology. This feature allows for adaptive energy distribution based on real-time demands. By leveraging precise control algorithms, the modules can adjust their output to match the specific requirements of connected devices, ultimately leading to reduced power loss and increased efficiency. This adaptability not only benefits end-users by lowering operational costs but also contributes to a greener environment by minimizing waste.

The versatility of the MMU-AP series is evident in its wide range of operational capabilities. These power modules are designed to work effectively in various voltage levels and load conditions. With input voltage ranges suitable for standard industrial environments, they can easily be integrated into existing systems, enhancing overall functionality without requiring extensive modifications.

Moreover, the compact design of the MMU-AP modules is another notable characteristic. Their size and light weight facilitate easier installation and integration into tight spaces, making them ideal for applications where real estate is a premium. This compact profile does not compromise performance, as these modules are engineered to deliver robust power output while maintaining thermal efficiency.

In terms of reliability, the MMU-AP series is built with high-grade components that withstand harsh operating conditions. With features such as over-voltage protection, short-circuit protection, and thermal shutdown capabilities, users can trust that their equipment would operate safely and efficiently, thereby extending the lifespan of both the power modules and the devices they serve.

Finally, Toshiba’s commitment to innovation ensures that the MMU-AP series incorporates cutting-edge technology. The series supports communication protocols that enable seamless integration with smart systems, paving the way for advanced monitoring and control functions. This levels up the user experience, providing insights into performance and diagnostics that are crucial for uptime and reliability in demanding environments.

In conclusion, the Toshiba MMU-AP series offers a blend of efficiency, adaptability, and advanced technology, making it a valuable asset for various industrial and commercial applications. Its intelligent design and robust features ensure that users can optimize energy use while maintaining high performance and reliability.
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