LG Electronics LP091CEM-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 Model LP091CEM-Y8 SpecificationSleeve and the Rear Grille Features and BenefitsQuick Heater Recovery Door Switch/Occupancy SensorOutdoor Air Temperature Switchover Temperature limitsCooling only Model Control LocationsOperation Electric Heating Model VentilationAdditional Controls Temperature LimitingAdditional Controls Removing the Front GrilleRemote Wall Thermostat REMOTE/LOCAL ControlEnergy Saver Front Desk ControlDisassembly 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 Installation of Wall Case in Wall Opening Preparation of the Front GrillePreparation of the Wall Case for All Types of Construction LGE 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 LockHazardous Voltage Condensate Disposal Pump Kit InstallationPlace the top cover assembly back into the unit Spraying Architectural Grille Architecture Grille Aluminum Single PackCondensate Drain kit Drain InstallationOutdoor Drain Kit Installation Outdoor Drain Kit InstallationIndoor Drain Kit Installation ChecklistLeveling Legs Leveling Leg Assembly Installation on Wall Sleeve Leveling Leg AssemblyHard Wire Kit Junction Box Kit Installation and Wiring ProcedureUse Copper Conductors Only Volt Units 208/230 Volt UnitsStandard Escutcheon Remote Escutcheon KitSubbase Dimensions Troubleshooting Guide Outside DimensionsPiping System Troubleshooting Guide Fails to Start Complaint Cause Remedy 208/230V 187V 253V Room AIR Conditioner Voltage LimitsComplaint Cause Remedy CN-IDPT Piping DiagramsPart A, there are 3 types Schematic Diagram435300 Exploded ViewEnlarged picture Condenser Outdoor Service Replacement ProcedureJanuary

LP091CEM-Y8 specifications

The LG Electronics LP091CEM-Y8 is a standout portable air conditioning unit designed to deliver comfort and convenience in various settings. This model combines efficiency with advanced technology to provide optimal cooling performance, making it an ideal choice for homeowners and renters alike.

One of the main features of the LP091CEM-Y8 is its cooling capacity, rated at 9,000 BTU. This level of power enables it to effectively cool spaces up to approximately 350 square feet, making it suitable for living rooms, bedrooms, or small offices. The unit also boasts a dehumidifying function, which removes up to 2.3 pints of moisture from the air per hour, ensuring a comfortable environment while reducing the risk of mold and mildew.

The LP091CEM-Y8 incorporates a user-friendly interface that includes an easy-to-read LED display. Users can adjust the temperature and settings using the included remote control, providing added convenience. The unit also features multiple fan speeds, allowing users to customize airflow according to their personal preferences.

A standout technological aspect of this model is its Energy Efficiency Ratio (EER), which provides a measure of its cooling efficiency. The LP091CEM-Y8 is designed to operate efficiently, reducing energy consumption while still delivering powerful cooling performance. This energy-saving feature not only helps lower utility bills but also makes the unit an environmentally friendly option.

Additionally, the LP091CEM-Y8 is equipped with a programmable timer, enabling users to set specific operating times. This feature allows the air conditioner to automatically turn on or off based on the user’s schedule, providing a seamless cooling experience. The unit also includes a washable and reusable air filter, which helps to improve indoor air quality by capturing dust and allergens.

Moreover, its compact and portable design includes caster wheels, making it easy to move the unit from room to room. The sleek and modern aesthetic ensures that it fits well with a variety of interior decors.

In summary, the LG Electronics LP091CEM-Y8 is a powerful, efficient, and user-friendly portable air conditioning unit that provides excellent cooling and convenience. Its advanced features, including a high BTU rating, energy efficiency, and easy mobility, make it an outstanding choice for anyone looking to enhance their indoor comfort.
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