Fan Blade Setting Dimensions, Removal Of Fan Shroud

FAN BLADE SETTING DIMENSIONS

Shown in the drawing in Figure 11 are the correct fan blade setting dimensions 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 11

FAN BLADE SETTING

TABLE 6

FAN BLADE DIMENSIONS

Model	Dimension A

WH421
WH483	1.75
WH602

MIS-1190

REMOVAL OF FAN SHROUD

1.Disconnect all power to 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 – (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 inches from compressor) as shown in the Table 7.

TABLE 7

SUCTION LINE TEMPERATURES

	Rated	95°F O.D.	82°F O.D.
Model	Airflow	Temperature	Temperature
WH421	1400	52 -- 54	62 -- 64
WH483	1550	53 -- 55	62 -- 64
WH602	1700	52 -- 54	61 -- 63

The suction line temperatures in Table 7 are based upon 80ºF dry bulb/67 degrees F wet bulb (50 percent R.H.) temperature and rated airflow across the evaporator during cooling cycle.

TABLE 8

RECOMMENDED OPERATING RANGES

	Rated	Rated	Recommended
Model	CFM *	ESP *	Air Flow Range
WH421	1400	.30	1600 -- 1150

WH483	1550	.20	1750 -- 1285

WH602	1700	.30	1950 -- 1375

*Rated CFM and ESP on high speed tap.

TABLE 9

INDOOR BLOWER PERFORMANCE

CFM @ 230V

		WH421, WH483				WH602

E.S.P.	Low 230V		High 230V		Low 230V		High 230V
E.S.P.
In H2O	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 2100-399 Page 19

Bard WH602, WH483, WH421 Fan Blade Setting Dimensions, Removal Of Fan Shroud, Refrigerant Charge

Models: WH421 WH483 WH602