Evacuation, Finishing the job | LG Electronics LA121HPMI, LAU121CNM

Installation

Soap water method

(1)Remove the caps from the gas side and liquid side valves.

(2)Remove the service-port cap from the gas side valve.

(3)To open the gas side valve turn the valve stem counterclockwise approximately 90°, wait for about 2~3 seconds, and close it.

(4)Apply a soap water or a liquid neutral detergent on the indoor unit connection or outdoor unit connec- tions by a soft brush to check for leakage of the con- necting points of the piping.

(5)If bubbles come out, the pipes have leakage.

Evacuation

•Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit.

Confirm the "Lo" knob of the manifold valve is open. Then, run the vacuum pump.

The operation time for evacuation varies with tub- ing length and capacity of the pump. The follow- ing table shows the time required for evacuation.

Required time for evacuation when 30 gal/h vac-

uum pump is used

If tubing length is less	if tubing length is longer
than 10m (33 ft)	than 10m (33 ft)

10 min. or more	15 min. or more

•When the desired vacuum is reached, close the "Lo" knob of the manifold valve and stop the vac- uum pump.

Finishing the job

•With a service valve wrench, turn the valve stem of liquid side valve counter-clockwise to fully open the valve.

•Turn the valve stem of gas side valve counter- clockwise to fully open the valve.

•Loosen the charge hose connected to the gas side service port slightly to release the pressure, then remove the hose.

•Replace the flare nut and its bonnet on the gas side service port and fasten the flare nut securely with an adjustable wrench. This process is very important to prevent leakage from the system.

•Replace the valve caps at both gas and liquid side service valves and fasten them tight.

This completes air purging with a vacuum pump. The air conditioner is now ready to test run.

Suction Line

Evaporator Line

3-way valve (Close)

3-way valve (Open)

Cap

Hexagonal wrench

		Indoor unit
		Outdoor unit
	Manifold valve
Pressure		Hi
gauge	Lo	Hi
gauge
	Open	Close
	Vacuum pump

30Room Air Conditioner

LA121HPMI, LAU121CNM, LAN121CNM, LAN121CNM, LAU121CNM, LA121HPMI, LA121HPMO, LAN121HNM, LAU121HNM, LA121CPMI, LA121CPMO specifications

LG Electronics has established itself as a leader in innovative home appliance technologies, particularly in the air conditioning segment. The LG LAN121CNM, LAU121CNM, LA121HPMI, LA121HPMO, LAN121HNM, LAU121HNM, LA121CPMI, and LA121CPMO models exemplify the blend of efficiency, comfort, and advanced features that LG is known for.

These air conditioning units are designed with energy efficiency in mind, boasting high SEER (Seasonal Energy Efficiency Ratio) ratings that help reduce electricity consumption. This not only saves money on energy bills but also aligns with eco-friendly initiatives by minimizing environmental impact.

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For those looking for flexibility, these models offer various installation options. They can be installed as wall-mounted, floor-mounted, or ceiling-mounted systems, catering to different space constraints and design preferences.

In conclusion, the LG LAN121CNM, LAU121CNM, LA121HPMI, LA121HPMO, LAN121HNM, LAU121HNM, LA121CPMI, and LA121CPMO air conditioning models are exemplary products that demonstrate LG’s commitment to quality, efficiency, and user-centric design. With cutting-edge technology and a focus on sustainability, these units cater to the needs of modern consumers while ensuring comfort all year round.