LG Electronics 553cc, 453cc instruction manual Maintenance, Cleaning, Inspection and Service

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SECTION 4

MAINTENANCE

4.1 GENERAL

If this power source does not operate properly, stop work immediately and investigate the cause of the malfunction. Maintenance work must be per- formed by an experienced person, and electrical work by a trained electrician. Do not permit un- trained persons to inspect, clean, or repair this power source. Use only recommended replace- ment parts.

ELECTRIC SHOCK CAN KILL! "Machinery Lockout Procedures" should be employed. If it is not pos- sible to use padlocks, attach a red tag to the line disconnect switch (or fuse box) warning others that the circuit is being worked on. Placing the power switch in the off position does not remove all power from inside the power source.

4.2 CLEANING

Periodically, remove the cover from the power source and blow accumulated dust and dirt from the air pas- sages and interior components by using clean low pressure air. The frequency cleaning is required de- pends upon the environment in which the power source is used.

It is imperative that all air passages be kept as clean as possible in order to allow adequate air flow to provide proper cooling.

After cleaning with low pressure air, check for and tighten any loose hardware, including all electrical connections. Check for frayed and/or cracked insula- tion on all power cables and replace if necessary.

Failure to replace worn or damaged cables may result in a bare cable touching a grounded object. The resulting electrical arc may injure unprotected eyes and will present a serious fire hazard. Body contact with a bare cable, connector, or conductor may result in severe electrical shock, causing seri- ous burns or death.

4.3 INSPECTION AND SERVICE

Keep the power source dry, free of oil and grease, and protected at all times from damage by hot metal and sparks.

4.3.1 Fan Motor

Keep the fan motor free of accumulated dust and dirt.

4.3.2 Transformer

Other than periodically cleaning the dust and dirt from the transformer, no maintenance is required. Ensure that only clean, dry, low pressure air is used.

4.3.3 Control Circuits

These circuits are protected by two 10 amp circuit breakers mounted in the front panel. If these open, the contactor will not operate.

4.3.4 Over Temperature Protection

If the power source reaches an abnormally high internal temperature, the thermal protection will deenergize the contactor circuit, shutting down the power source but leaving the cooling fan on. After the power source has cooled to a safe level, the thermal protection will auto- matically reset. While deenerigized, the contactor can not be operated.

4.3.5 Digital Voltmeter/Ammeter Calibration

To verify the accuracy of the digital voltmeter/ammeter combination, the following procedure can be performed periodically:

1 . Place the Panel/Remote switch in Panel position.

2.Disconnect cables from the output terminals and then connect an accurate DC voltmeter to the output terminals.

3.Open the front control panel by removing the two mounting screws from the upper corners. Lo- cate the J9 jumper plug on the control pc board and remove the plug. The J9 jumper plug is located just left of the meter pc board ribbon cable connection plug J10.

4.Place the Contactor switch in the On position

5.With the primary input power on, turn the Current control knob until you get 25V on the DC voltme- ter. Compare the reading with the reading on the digital voltmeter on the front panel.

6.If there is a difference in the voltage readings, remove meter board from its four mounting posts, and adjust the trimpot (R13) on the meter board with a small screwdriver until the digital meter reading matches the DC voltmeter read- ing. When satisfied, reassemble meter board, reconnecting J9 jumper plug, and reassemble front control panel.

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Contents DC Welding Power Sources 15-591-A FebruaryUser Responsibility PrefaceTable of Contents Safety Precautions SP98-10 Précautions DE Sécurité Informations Complémentaires Relatives LA Sécurité Section DescriptionOptional Accessories SafetyInstallation RECEIVING, Unpacking and PlacementLocation Primary Input Electrical CONNEC- TionRear Panel Inside View Recommended Cable Strip LengthsControl Connections Refer to Figure Remote Control Optional Output Welding Connections SecondaryAuxiliary 115 V AC Receptacle Option 3 42V Circuit Breaker CB1Switch CKT. Breakers PowerOutput Receptacle Section Operation Over Temperature Indicator Temp Fault IndicatorVoltmeter and Ammeter Operation SET-UPCleaning MaintenanceInspection and Service Troubleshooting Testing and Replacing Bridge ASSEM- BLY ComponentsPCB Voltage Tests From ReadingCondition Action Replacement Parts Ordering453cc-553cc View 1 Front 453cc-553cc View 2 Top Panel 453cc-553cc View 3 Angled Front 453cc-553cc View 4 Rear 453cc-553cc View 5 Internal Rear View 453cc-553cc View 6 Internal Front View Section Replacement Parts 0558001568-A 453cc-553cc Schematic Diagram- 50/60 HZ453cc-553cc Wiring Diagram- Primary 3 PH 0558001569 453cc-553cc Wiring Diagram Secondary 50/60 HZ 0558001570-A Part or Code no QTY Description Symbol GND1 LUG Terminal 2-8 Wire 1/4 Stud J5 Plug Housing 15 POSConnector 20 AWG 3 PIN Connector 20 AWC 7 PINPlug Housing 2 POS Seal Wire 2 POSHinge Access Panel Access Gray15-591-A

453cc, 553cc specifications

LG Electronics has made a significant mark in the world of home appliances and electronics, particularly with its innovative air conditioning systems. Among its impressive lineup are the 553cc and 453cc models, which exemplify cutting-edge technology and exceptional performance. These air conditioning units are designed to provide comfortable living environments while maximizing energy efficiency.

The LG 553cc model stands out with its refined design and robust features. It comes equipped with advanced inverter technology, which allows for precise temperature control and energy savings. The inverter compressor operates at variable speeds, adjusting to the cooling requirements in real-time, resulting in quieter operation and reduced energy consumption. The 553cc unit is also designed with a high cooling capacity, making it suitable for larger rooms or open spaces, ensuring even temperature distribution throughout the area.

On the other hand, the LG 453cc model caters to smaller spaces while delivering efficient cooling performance. Its compact design does not compromise functionality, making it ideal for apartments or smaller homes. The 453cc model is also equipped with inverter technology, which allows households to enjoy significant energy savings without sacrificing comfort. This air conditioner operates silently, ensuring a peaceful indoor environment.

Both models feature a sleek, modern aesthetic that can blend seamlessly into various room decors. They come with user-friendly smart controls, allowing homeowners to monitor and adjust their air conditioning settings via smartphone apps, providing convenience and accessibility at your fingertips.

Moreover, LG has incorporated air purification technologies in both models. These systems utilize advanced filters to remove contaminants and allergens from the air, promoting a healthier indoor atmosphere. The unique design also emphasizes ease of maintenance, with accessible filters that can be cleaned or replaced easily.

In terms of durability, the materials used in the construction of the 553cc and 453cc models are built to withstand the test of time, with anti-corrosive coatings that increase longevity in varying climates.

Overall, the LG Electronics 553cc and 453cc air conditioning units represent the pinnacle of comfort, technology, and efficiency in modern cooling solutions, catering to diverse needs while ensuring an eco-friendly approach. Choosing either model means investing in a quality product that enhances indoor living spaces with minimal environmental impact.
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