7 EVACUATING

AIR PURGE

Evacuate the air in the connecting pipes and in the indoor unit using vacuum pump.

Do not use the refrigerant in the outdoor unit. For details, see the manual of vacuum pump.

Use a vacuum pump

Be sure to use a vacuum pump with counter-flow prevention function so that inside oil of the pump does not flow backward into pipes of the air conditioner when the pump stops.

1.Connect the charge hose from the manifold valve to the service port of the gas side packed valve.

2.Connect the charge hose to the port of vacuum pump.

3.Open fully the low pressure side handle of the gauge manifold valve.

4.Operate the vacuum pump to start evacuating.

Perform evacuating for about 35 minutes if the piping length is 30 meters total for model SM560 and 50 meters for model SM800

(assuming a pump capacity of 27 liters per minute.) Then confirm that the compound pressure gauge reading is –101 kPa ( –76 cmHg).

5.Close the low pressure side valve handle of gauge manifold.

6.Open fully the valve stem of the packed valves (both sides of Gas and Liquid).

7.Remove the charging hose from the service port.

8.Securely tighten the caps on the packed valves.

Packed valve handling precautions

•Open the valve stem all the way out ; do not try to open it beyond the stopper.

•Securely tighten the valve stem cap at the torque as follows:

15.9 mm (diam.)

63 to 77 N•m (6.3 to 7.7 kgf•m)

 

 

12.7 mm (diam.)

50 to 62 N•m (5.0 to 6.2 kgf•m)

 

 

9.52 mm (diam.)

33 to 42 N•m (3.3 to 4.2 kgf•m)

 

 

6.35 mm (diam.)

14 to 18 N•m (1.4 to 1.8 kgf•m)

 

 

Hexagonal wrench is required.

<For RAV-SM800AT-E model>

•As shown in the figure, be sure to use a double spanner to loosen or tighten the flare nut of the valve at gas side. If using a single spanner, the nut cannot be tightened with necessary tightening torque.

On the contrary, use a single spanner to loosen or tighten the flare nut of the valve at liquid side.

Cover

Cap

Piping valve

LoosenedTightened

Flare nut

SM800 type valve at gas side

Cover

Do not put the spanner or torque wrench, etc. on the cover.

The valve may be broken.

Compound

pressure gauge Pressure gauge

–101kPa

(–76cmHg)

Manifold valve

Handle Lo

Handle Hi

 

Charge hose

(Keep fully closed)

Charge hose

 

 

Vacuum pump

Packed valve

adapter for

counter-flow

at liquid side

prevention

 

 

Vacuum

 

pump

 

Service port

 

(Valve core (Setting pin))

 

Packed valve at gas side

76

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Image 79
Toshiba RAM-SM560BT-E, RAM-SM800KRT-E, RAM-SM560AT-E, RAM-SM800BT-E, RAM-SM560UT-E Evacuating, SM800 type valve at gas side
Page 78 Page 80

RAM-SM560BT-E, RAM-SM560KRT-E, RAM-SM800UT-E, RAM-SM800AT-E, RAM-SM560UT-E specifications

Toshiba has established itself as a leader in the memory module market with a range of products tailored for various computing needs. Among its offerings, the RAM-SM560AT-E, RAM-SM560UT-E, RAM-SM800KRT-E, RAM-SM800UT-E, and RAM-SM560BT-E stand out due to their advanced features, high performance, and reliable technologies.

The RAM-SM560AT-E is engineered for optimal efficiency and speed, specifically targeting the demands of modern applications. With a capacity of up to 8GB, this module leverages DDR4 technology, allowing for faster data transfers and improved energy efficiency compared to previous generations. The design focuses on low power consumption which is crucial for laptop users who seek longer battery life without compromising performance.

Next in line, the RAM-SM560UT-E offers similar capacities but is tailored with higher clock speeds. This model is particularly beneficial for gamers and professionals engaging in graphics-intensive tasks. Its enhanced throughput enables smoother multitasking and significantly reduces latency during operations that require extensive computational power.

The RAM-SM800KRT-E is a powerhouse within the lineup, boasting increased bandwidth and specifications that cater to high-end systems. Its capacity reaches up to 16GB, and it supports advanced features like dual-channel configuration, which maximizes performance by allowing simultaneous data transfer across channels. This is ideal for users working with large datasets, as it significantly accelerates processing times.

On the other hand, the RAM-SM800UT-E is designed for versatility, accommodating a broader range of devices, from ultrabooks to gaming laptops. Its emphasis on thermal management ensures reliability during extended usage. Coupled with error-correcting code (ECC) technology, it provides enhanced data integrity, making it suitable for mission-critical applications.

Lastly, the RAM-SM560BT-E is geared towards users who value balance between performance and cost. It features a robust construction and is compatible with a variety of motherboards. This makes it an excellent choice for upgrades in systems that require reliable performance without extensive investment.

In summary, Toshiba's RAM lineup, featuring the RAM-SM560AT-E, RAM-SM560UT-E, RAM-SM800KRT-E, RAM-SM800UT-E, and RAM-SM560BT-E, showcases a diverse array of memory solutions. Each model is built with cutting-edge technology, meeting the diverse demands of users ranging from casual home users to high-power gaming enthusiasts. With high capacity options, advanced data handling features, and energy-efficient designs, Toshiba continues to be at the forefront of memory technology.
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