Lubrication

CONDENSATE DRAIN Ð Check and clean each year at start of cooling season. In winter, keep drain dry or protect against freeze-up.

FILTERS Ð Clean or replace at start of each heating and cooling season, or more often if operating conditions require it. Replacement ®lters must be same dimensions as original ®lters.

OUTDOOR-AIR INLET SCREENS Ð Clean screens with steam or hot water and a mild detergent. Do not use dis- posable ®lters in place of screens.

COMPRESSORS Ð Each compressor is charged with cor- rect amount of oil at the factory.

FAN-MOTOR BEARINGS Ð Fan motor bearings are of the permanently-lubricated type. No further lubrication is required. No lubrication of outdoor- or indoor-fan motors is required.

Outdoor-Fan Adjustment (Fig. 24)

Fig.24 Ð Outdoor-Fan Adjustment

1.Shut off unit power supply.

2.Remove outdoor-fan assembly (grille, motor, motor cover and fan) and loosen fan hub setscrews.

3.Adjust fan height as shown in Fig. 24.

4.Tighten setscrews and replace outdoor-fan assembly.

Refrigerant Charge Ð Amount of refrigerant charge is listed on the unit nameplate (also refer to Tables 1A and 1B). Refer to Carrier Standard Service Techniques Manual, Chapter 1, Refrigerants section.

Unit panels must be in place when unit is operating dur- ing charging procedure.

LOW CHARGE HEATING OR NO CHARGE Ð Use stand- ard evacuating techniques. After evacuating system, weigh in the speci®ed amount of refrigerant (refer to Tables 1A and 1B).

LOW CHARGE COOLING Ð Use Cooling Charging Chart, Fig. 25 and 26. Vary refrigerant until the conditions of the chart are met. Note the charging chart is different from type normally used. Chart is based on charging the units to the correct superheat for the various operating conditions. Ac- curate pressure gage and temperature sensing device are re- quired. Connect the pressure gage to the service port on the suction line. Mount the temperature sensing device on the suction line and insulate is so that outdoor ambient tempera- ture does not affect the reading. Indoor-air L/s (cfm) must be within the normal operating range of the unit.

TO USE COOLING CHARGING CHART Ð Take the out- door ambient temperature and read the suction pressure gage. Refer to chart to determine what suction temperature should be. If suction temperature is high, add refrigerant. If suction temperature is low, carefully blow some of the charge. Re- check the suction pressure as charge is adjusted.

Example: (Fig. 26) (Circuit 1)

Outdoor Temperature . . . . . . . . . . . . . . . . . . . . 29 C (85 F) Suction Pressure . . . . . . . . . . . . . . . . . . . 483 kPa (70 psig) Suction Temperature should be . . . . . . . . . . . . . 7 C (46 F) (Suction Temperature may vary ± 3° C (5° F)

If Chargemaster charging device is used, temperature and pressure readings must be accomplished using the charging chart.

012, 50LJQ008 specifications

The Carrier 012,50LJQ008 is a state-of-the-art air conditioning unit, specifically designed to provide optimal temperature control and energy efficiency for residential and commercial applications. As part of Carrier's renowned portfolio, this model incorporates innovative technologies and user-friendly features that set it apart from competitors in the market.

One of the standout characteristics of the Carrier 012,50LJQ008 is its high energy efficiency rating. Equipped with advanced inverter technology, this unit adjusts its cooling output based on the ambient temperature and humidity levels, reducing energy consumption while maintaining consistent comfort. This not only lowers utility bills but also minimizes the environmental impact, making it a sustainable choice for modern living.

In terms of cooling capacity, the Carrier 012,50LJQ008 offers a formidable performance, capable of efficiently cooling spaces of varying sizes. Its robust compressor ensures rapid cooling while remaining remarkably quiet, which is particularly advantageous for residential settings. The unit’s capacity to handle high ambient temperatures allows it to perform reliably even in extreme weather conditions, ensuring comfort during the hottest days of summer.

Another key feature is the user-friendly interface. The Carrier 012,50LJQ008 comes with a digital control panel that allows users to easily set their desired temperature and adjust fan speeds according to their preferences. Additionally, it offers remote control functionality, providing convenience and ease of use for homeowners and occupants alike.

The design of the Carrier 012,50LJQ008 incorporates advanced air filtration technology, including a multi-layer filter system that captures allergens and airborne particles. This not only improves indoor air quality but also contributes to the longevity of the unit by preventing dust buildup. The filters are easily accessible for cleaning and replacement, ensuring the system runs efficiently.

Durability is another critical aspect of this model. Constructed with high-quality materials, the Carrier 012,50LJQ008 is designed to withstand varying environmental conditions. Its corrosion-resistant outdoor unit ensures a longer lifespan, while comprehensive warranties provide peace of mind to users.

In summary, the Carrier 012,50LJQ008 is an exemplary air conditioning unit that combines energy efficiency, advanced technology, and user-centric features. Whether for a family home or a commercial space, its superior performance, reliability, and ease of use make it an excellent choice for maintaining optimal comfort year-round.