TROUBLESHOOTING

FAN BLADE SETTING DIMENSIONS

Shown in Figure 10 is the correct fan blade setting dimension for proper air delivery across the outdoor coil.

Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions below be checked and blade adjusted in or out on the motor shaft accordingly.

4.Unwire condenser fan motor.

5.Slide complete motor, fan blade, and shroud assembly out the left side of the unit.

6.Service motor/fan as needed.

7.Reverse steps to reinstall.

FIGURE 10

FAN BLADE SETTING

TABLE 5

FAN BLADE DIMENSION

 

Dimension

Model

A

 

 

WA421

 

WA482

1.75

WA602

 

 

 

REMOVAL OF FAN SHROUD

1.Disconnect all power to the unit.

2.Remove the screws holding both grilles, one on each side of unit, and remove grilles.

3.Remove screws holding fan shroud to condenser and bottom. Nine (9) screws.

REFRIGERANT CHARGE

The correct system R-22 charge is shown on the unit rating plate. Optimum unit performance will occur with a refrigerant charge resulting in a suction line temperature (6” from compressor) as shown in Table 6.

TABLE 6

REFRIGERANT CHARGE

 

Rated

95 OD

82 OD

Model

Airflow

Temperature

Temperature

 

 

 

 

WA421

1400

52 - 54

64 - 66

 

 

 

 

WA482

1550

54 - 56

65 - 67

 

 

 

 

WA602

1700

53 - 55

60 - 62

 

 

 

 

The suction line temperatures in table above are based upon

80° F dry bulb / 67° F wet bulb (50% R.H.) temperature and rated airflow across the evaporator during cooling cycle.

TABLE 7

INDOOR BLOWER PERFORMANCE

CFM @ 230V

 

 

WA421, WA482

 

 

WA602

 

 

 

 

 

 

 

 

 

 

E.S.P.

Low 230V

High 230V

Low 230V

High 230V

 

 

 

 

 

 

 

 

In H20

Dry Coil

Wet Coil

Dry Coil

Wet Coil

Dry Coil

Wet Coil

Dry Coil

Wet Coil

.0

1650

1600

1885

1800

1600

1450

2200

2000

.1

1550

1500

1770

1665

1525

1375

2100

1900

.2

1450

1400

1635

1540

 

 

2000

1800

.3

1350

1300

1500

1400

 

 

1875

1700

.4

1300

1175

1370

1285

 

 

1775

1600

.5

- - -

- - -

1250

1150

 

 

1650

1475

 

 

 

 

 

 

 

 

 

Manual 2100-218 Page 17

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Bard WA482, WA421 Troubleshooting, FAN Blade Setting Dimensions, Removal of FAN Shroud, Refrigerant Charge

WA482, WA421 specifications

Bard WA482 and WA421 are high-performance air conditioning units designed for commercial and industrial applications. These models are renowned for their exceptional cooling efficiency, durability, and versatile performance, making them suitable for a variety of settings, including schools, factories, and office buildings.

One prominent feature of the Bard WA482 is its powerful cooling capacity. It has an impressive cooling output that can effectively manage indoor temperatures, even in the hottest conditions. This capability ensures optimal comfort for occupants while maintaining energy efficiency. Similarly, the Bard WA421 offers substantial cooling capacity, catering to smaller commercial spaces without compromising on performance.

Both models utilize advanced technology to enhance their operational efficiency. The units are equipped with a high-efficiency scroll compressor that minimizes energy consumption while delivering consistent cooling. This technology allows businesses to reduce their energy costs significantly, contributing to environmental sustainability.

Another significant characteristic of Bard WA482 and WA421 is their robust construction. Built with heavy-gauge galvanized steel, these units are designed to withstand tough environmental conditions. This durability ensures a long operational life, reducing the need for frequent repairs and replacements. The units are also corrosion-resistant, making them ideal for coastal or humid regions.

Efficiency is further enhanced by the inclusion of a multi-speed fan that allows for better airflow management. This feature enables the units to adjust their functioning based on the current cooling demand, optimizing energy use and minimizing noise levels. Consequently, users experience a comfortable environment without disruptive sound.

Maintenance is made simple with these models thanks to their accessible design. The units feature removable panels that provide easy access to internal components for routine servicing. This design minimizes downtime and helps maintain the overall efficiency of the system.

In terms of versatility, Bard WA482 and WA421 can be customized with various kits and options, including digital thermostats and advanced control systems. This adaptability enables users to tailor the cooling solutions to their specific needs, enhancing overall satisfaction.

In summary, Bard WA482 and WA421 stand out in the commercial air conditioning sector due to their impressive cooling capacity, energy-efficient technologies, robust construction, and ease of maintenance. These characteristics make them a reliable choice for businesses looking to maintain a comfortable and sustainable indoor environment.