LG Electronics LP091HEM-Y8 manual LGE Internal Use Only

Page 15

NOTES

—Replacement of the refrigeration cycle.

1.When replacing the refrigeration cycle, be sure to discharge the refrigerant system using a refrigerant recovery system.

If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the refrigerant. Leave the valve in place after servicing the system.

2.After discharging the unit completely, remove the desired component, and unbraze the pinch-off tubes.

3.Solder service valves into the pinch-off tube ports, leaving the valves open.

4.Solder the pinch-off tubes with service valves.

5.Evacuate as follows.

1)Connect the vacuum pump, as illustrated Figure 21 A.

2)Start the vacuum pump, slowly open manifold valves A and B with two full turns counterclockwise and leave the valves closed. The vacuum pump is now pulling through valves A and B up to valve C by means of the manifold and entire system.

CAUTION

If high vacuum equipment is used, just crack valves A and B for a few minutes, then open slowly with the two full turns counterclockwise. This will keep oil from foaming and being drawn into the vacuum pump.

3)Operate the vacuum pump for 20 to 30 minutes, until 600 microns of vacuum are obtained. Close valves A and B, and observe the vacuum gauge for a few minutes. A rise in pressure would indicate a possible leak or moisture remaining in the system. With valves A and B closed, stop the vacuum pump.

4)Remove the hose from the vacuum pump and place it on the charging cylinder. See Figure 21 B. Open valve C.

Discharge the line at the manifold connection.

5)The system is now ready for final charging.

6.Recharge as follows :

1)Refrigeration cycle systems are charged from the high-side. If the total charge cannot be put

in the high-side, the balance will be put in the suction line through the access valve which you installed as the system was opened.

2)Connect the charging cylinder as shown in Figure 21 B.

With valve C open, discharge the hose at the manifold connection.

3)Open valve A and allow the proper charge to enter the system. Valve B is still closed.

4)If more charge is required, the high-side will not take it. Close valve A.

5)With the unit running, open valve B and add the balance of the charge.

a.Do not add the liquid refrigerant to the low- side.

b.Watch the low-side gauge; allow pressure to rise to 30 lbs.

c.Turn off valve B and allow pressure to drop.

d.Repeat steps B and C until the balance of the charge is in the system.

6)When satisfied the unit is operating correctly, use the pinch-off tool with the unit still running and clamp on to the pinch-off tube. Using a tube cutter, cut the pinch-off tube about 2 inches from the pinch-off tool. Use sil-fos solder and solder pinch-off tube closed. Turn off the unit, allow it to set for a while, and then test the leakage of the pinch-off connection.

Copyright ©2008 LG Electronics. Inc. All right reserved.

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Only for training and service purposes

LGE Internal Use Only

 

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Contents SVC Manual LGE Internal Use Only SpecificationSleeve and the Rear Grille Features and BenefitsQuick Heater Recovery Door Switch/Occupancy SensorOutdoor Air Temperature Switchover Temperature limitsControl Locations Operation Electric Heating ModelVentilation Additional Controls Temperature LimitingAdditional Controls Removing the Front GrilleFront Desk Control Molex Housing SpecREMOTE/LOCAL Control Energy SaverDisassembly Instructions Mechanical PartsFront Grille Control BOX Electric Heater Electric Heater Model only AIR Handling PartsAxial FAN Cross Flow FANCompressor Electrical PartsShroud Outdoor Motor6 P.C.B Power CordCapillary Tube Refrigeration CycleCondenser EvaporatorLGE Internal Use Only Pulling Vacuum Dimension of sleeve assembly optional InstallationHOW to Install the Unit Dimension of air conditionerWall Sleeve Installation Wall Case Installation DataGeneral Preparation of the Wall Case for All Types of Construction Installation of Wall Case in Wall OpeningAs shipped, the LG wall sleeve is ready for installation Preparation of the Front GrilleLGE Internal Use Only Sub-Base Connected Unit Installation 208, 230, and 208/230 Volt Units Electrical SafetyElectrical Requirements Electrical Data for 230/208V ModelDescription Field Installed AccessoriesInstallation Control Panel Key LockCondensate Disposal Pump Kit Installation Part No AYSB2101Hazardous Voltage Place the top cover assembly back into the unit Spraying Architectural Grille Architecture Grille Aluminum Single PackDrain Installation Condensate Drain kitPart No AYDR101 Outdoor Drain Kit Installation Outdoor Drain Kit InstallationPart No AYLL101 Indoor Drain Kit InstallationChecklist Leveling LegsLeveling Leg Assembly Installation on Wall Sleeve Leveling Leg AssemblyUse Copper Conductors Only Hard Wire KitJunction Box Kit Installation and Wiring Procedure Part No AYAGALA01Volt Units 208/230 Volt UnitsPart No AYRE110 Remote Escutcheon KitPart No AYSB1101 230/208V 20A AYSB2101 230/208V 30A SubbaseSubbase with provided screws. Figure After wiring is complete, mount covers a and F toTo each installation instruction for that accessory Skirting Hole Location Right Cover Assembly066mm 406mm 505mm Troubleshooting GuideOutside Dimensions Piping SystemTroubleshooting Guide Fails to Start Complaint Cause Remedy 208/230V 187V 253V Room AIR Conditioner Voltage LimitsComplaint Cause Remedy Th4 Thermistor for Condenser pipe Air temperature Piping DiagramsTh2 Thermistor for Evaporator pipe temperature Th3 Thermistor for outdoor Air temperatureCN-NN Schematic Diagram435300B Exploded ViewJanuary

LP091HEM-Y8 specifications

The LG Electronics LP091HEM-Y8 is a versatile portable air conditioner designed to provide efficient cooling solutions for various environments. Compact yet powerful, this model is especially favored for its performance, ease of use, and innovative features that cater to the modern consumer's needs.

One of the standout characteristics of the LP091HEM-Y8 is its cooling capacity, rated at 9,000 BTU. This makes it ideal for rooms up to 400 square feet, allowing for effective temperature control in bedrooms, living rooms, or even small offices. The unit not only cools, but it also dehumidifies, helping to maintain a comfortable indoor air quality by removing excess moisture, which can be particularly beneficial in humid climates.

The unit operates on a convenient set of features, including a programmable timer that enables users to set the air conditioner to turn on or off at specific times, promoting energy efficiency and ensuring a comfortable environment whenever needed. The user-friendly control panel and included remote control facilitate easy temperature adjustments from across the room. Additionally, the LP091HEM-Y8 features multiple fan speeds and cooling modes, allowing for a customizable cooling experience.

In terms of technology, the LG LP091HEM-Y8 employs a dual inverter compressor. This technology enhances energy efficiency, significantly reducing electricity bills compared to traditional portable air conditioners while delivering rapid cooling performance. Its low noise operation provides a quiet environment, making it suitable for use in bedrooms or quiet working spaces.

Moreover, the LP091HEM-Y8 is designed with convenience in mind. It features a washable and reusable air filter, promoting cleaner air circulation while reducing maintenance costs. The unit's portable design, complete with caster wheels, makes it easy to move from room to room, and the simple installation process eliminates the need for complicated setups.

Finally, the sleek and modern design of the LP091HEM-Y8 seamlessly blends into various interior styles, making it a great addition to any home or office. With a combination of efficiency, ease of use, and advanced technology, the LG Electronics LP091HEM-Y8 continues to be a preferred choice for those seeking a reliable and effective air conditioning solution.
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