Bard WA381, WA602, WA491 Troubleshooting, Fan Blade Setting Dimensions, Removal Of Fan Shroud

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.

FIGURE 9

FAN BLADE SETTING

TABLE 5

FAN BLADE DIMENSION

	Dimension
Model	A
WA381
WA423
WA484	1.75
WA491
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.

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.

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
WA381	1100	50 - 48	48 - 46
WA423	1400	52 - 54	64 - 66
WA484	1550	54 - 56	65 - 67
WA491	1250	48 - 46	47 - 45
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

		WA423, WA484				WA602
	Low 230V		High 230V		Low 230V		High 230V
E.S.P.
	Dry Coil	Wet	Dry Coil	Wet	Dry Coil	Wet	Dry Coil	Wet
In H20		Coil		Coil		Coil		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

Table 7A on Page 18 for models WA381 and WA491

Manual 2100-398 Page 16