Bard PA13421-A, PA13481-B Service and Troubleshooting, Service Hints, Pressure Service Ports

SERVICE AND TROUBLESHOOTING

SERVICE HINTS

1.Caution homeowner to maintain clean air filters at all times. Also, not to needlessly close off supply and return air registers. This reduces air flow through the system which shortens equipment service life as well as increasing operating costs.

2.Check all power fuses or circuit breakers to be sure that they are the correct rating.

3.Periodic cleaning of the outdoor coil to permit full and unrestricted airflow circulation is essential.

PRESSURE SERVICE PORTS

High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure tables can be found later in this manual covering all models on cooling cycle. It is imperative to match the correct pressure table to the unit by model number.

FAN BLADE SETTINGS

Shown in Figure 8 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 8

FAN BLADE SETTING

"B"

“A”MD-1417BC

REFRIGERANT CHARGE

The correct system R-410A charge is shown on the unit rating plate.

TABLE 8

REFRIGERANT CHARGE

Model	Rated	95° OD	82° OD
	Airflow	Temperature	Temperature

TABLE 9

FAN BLADE SETTING DIMENSIONS

Model Dimension "A"

PA1324

PA1330

PA1336

PA1324	800	96-97	83-84
PA1330	1000	94-95	82-83
PA1336	1100	97-98	85-86

PA1342

PA1348

3¼"

PA1342	1400	98-99	85-86
PA1348	1550	98-99	85-86
PA1360	1650	101-102	88-89

The above liquid line temperatures are based upon 80°F dry bulb/67° wet bulb (50% RH) temperatures and rated airflow across the evaporator during cooling cycle.

PA1360

TABLE 10

INDOOR BLOWER PERFORMANCE 1

			2	3	4
Model	Rated	MAX	Continuous	Rated	Rated
	ESP	ESP	Airflow	Cooling	Heating
				CFM	CFM
PA1324	0.10	0.50	600	800	800
PA1330	0.15	0.50	750	1000	1000
PA1336	0.15	0.50	825	1100	1100
PA1342	0.20	0.50	925	1400	1400
PA1348	0.20	0.50	1025	1550	1550
PA1360	0.20	0.50	1150	1650	1650

1Motor will deliver consistent CFM through voltage supply range with no deterioration (197-253V for all 230/208V models).

2Continuous CFM is the total air being circulated during continuous (manual fan) mode.

3Will occur automatically with a call for "Y" for cooling mode operation.

4Will occur automatically with a call for "W1" for heating mode operation.

Manual	2100-467
Page	18 of 23