05-424 KS0971-1271 12/13/05 1:28 PM Page 22

Basic Functions of the Service Valves

The basic functions of the service valves are given in Table 8 below.

Table 8

Action

Narrow Tube Service

Wide Tube Service

Valve (2-Way)

Valve (3-Way)

 

 

CLOSED

O-ring

Valve cap

 

 

 

Stem

Shipping

Fully OPEN

Operating and test running

the air conditioner

 

Fully OPEN

 

Measuring pressure

*

 

and gas charging

 

 

 

CLOSED

 

 

*

The service port on the wide tube ser-

Air purging with

*

vice valve uses a Schrader core valve

a vacuum pump

 

to access the refrigerant system.

 

 

Therefore, be sure to use a hose con-

 

 

nector which has a push-pin inside.

 

 

(Fig. 60a)

Service valve

CAUTION

Hose with push-pin

 

 

Close

When opening or clos-

ing the service valve

 

PUSH

Open

 

stem, use the accessory

 

Hex

Fig. 60a

hex wrench. Be sure to

wrench

 

 

 

fully seat the wrench

Fig. 60b

 

before turning the valve.

 

 

Pump Down

Pump down means collecting all refrigerant gas in the system back into the outdoor unit without losing any of the gas. Pump down is used when the unit is to be moved or before servicing the refrigerant circuit.

Pump Down Procedure

Be sure to carry out pump down with the unit in cooling mode.

(1)Connect the Lo side charging hose of the manifold valve to the service port on the wide tube service valve.

(2)Using a hex wrench, turn the narrow tube service valve clockwise all the way to close the service valve. (Be sure to confirm that the wide tube service valve is fully open.)

(3)Press the operation button and start cooling oper- ation.

(4)When the low pressure gauge reading falls to 14.2 to 7.1 psi (1 to 0.5 kg/cm2), fully close the wide tube valve stem. Then quickly stop the unit.

(5)Disconnect all gauges and hoses, and replace the valve caps as they were before.

22

Page 22
Image 22
Sanyo Cool/Dry installation instructions Basic Functions of the Service Valves, Pump Down

Cool/Dry specifications

The Sanyo Cool/Dry air conditioning unit is a versatile and efficient solution designed to provide optimal indoor comfort across varying climate conditions. Known for its advanced technologies and features, the Sanyo Cool/Dry offers an ideal balance between performance and energy efficiency, making it a popular choice among consumers looking for reliable cooling and dehumidifying capabilities.

One of the standout features of the Sanyo Cool/Dry is its multi-function capability. This unit is designed to operate in two modes: cool and dry, allowing users to effortlessly switch between air conditioning and dehumidification based on their needs. The cooling function ensures that rooms are kept at comfortable temperatures even during the hottest days, while the dry mode effectively reduces humidity levels, promoting a healthier indoor environment.

Energy efficiency is a hallmark of this model, as it includes advanced technologies that minimize energy consumption without sacrificing performance. The Sanyo Cool/Dry is equipped with a high-efficiency compressor that adapts its power according to the cooling demand. This inverter technology not only ensures a quieter operation but also significantly reduces electricity bills, making it an eco-friendly choice for environmentally-conscious consumers.

This air conditioning unit also comes with an intelligent control system that allows for easy operation and programming. Users can adjust their desired temperature settings with a remote control, which enhances convenience. Some models may even feature smart home integration capabilities, enabling users to monitor and control their air conditioning units through smartphone applications.

Another important characteristic of the Sanyo Cool/Dry is its air purification features. Many models include advanced filters designed to capture allergens, dust, and other airborne particles, helping to improve indoor air quality. This is particularly beneficial for those with allergies or respiratory issues, as it creates a cleaner and healthier living space.

Quiet operation is another highlight of the Sanyo Cool/Dry, making it suitable for residential environments where noise levels need to be kept to a minimum. This is ideal for bedrooms, offices, or any space where tranquility is prized.

In summary, the Sanyo Cool/Dry air conditioning unit combines efficiency, versatility, and user-friendly features, making it a standout option for those seeking effective climate control solutions. With its dual-mode functionality, energy-efficient technology, smart operation, and air purification capabilities, it satisfies a wide range of consumer needs while enhancing overall comfort in living and working spaces.