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 in Table 10 in this manual covering all models on cooling cycle. It is imperative to match the correct pressure table to the unit by model number.

FIGURE 9

FAN BLADE SETTING DIMENSIONS

Model	Dimension A

P1142A3	1.75"
P1148A1	1.75"
P1060A1	1.75"

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 9.

TABLE 9

		95 Degree F			82 Degree F
	Rated		OD		OD
Model	Airflow	Temperature			Temperature

P1142A3	1400	57	-	59	58	-	60
P1148A1	1550	55	-	57	59	-	61
P0160A1	1700	47	-	49	54	-	56

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

FAN BLADE SETTINGS

Shown in Figure 9 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.

SUCTION AND DISCHARGE TUBE BRAZING

Compliant Scroll compressors have copper plated steel suction and discharge tubes. These tubes are far more rugged and less prone to leaks than copper tubes used on other compressors. Due to different thermal properties of steel and copper, brazing procedures may have to be changed from those commonly used.

•To disconnect: heat joint Areas 2 and 3 slowly and uniformly until braze material softens and the tube can be pulled out of suction fitting. (See Figure 10.)

•To connect:

–Recommended brazing materials: silfos with minimum 5% silver or silver braze material with flux.

–Reinsert tube into fitting.

–Heat tube uniformly in Area 1 moving slowly to Area 2. When joint reaches brazing temperature, apply brazing material. (See Figure 10.)

–Heat joint uniformly around the circumference to flow braze material completely around the joint.

–Slowly move torch into Area 3 to draw braze material into joint. (See Figure 10.)

–Do not overheat joint.

Manual 2100-324 Page 14

P1060A1, P1142A3, P1148A1 specifications

Bard P1148A1, P1142A3, and P1060A1 are high-performance vascular access products designed to meet the diverse needs of medical professionals in various healthcare settings. These devices, developed by Bard, are renowned for their innovative technologies and superior characteristics that enhance patient care and facilitate clinical procedures.

The Bard P1148A1 is a peripherally inserted central catheter (PICC) designed for long-term intravenous therapy, including chemotherapy and antibiotics. Its key features include a strong yet flexible design that allows for easy insertion and maintenance of the catheter over extended periods. The P1148A1 utilizes advanced materials that minimize the risk of thrombosis and infection, pivotal considerations in central line management. The catheter is equipped with a specialized tip configuration that promotes optimal blood flow and reduces complications.

Moving to the Bard P1142A3, this device serves a similar purpose but incorporates unique technologies that enhance its usability. The P1142A3 boasts a hydrophilic coating which facilitates smoother insertions and reduces friction during catheter placements. This is particularly valuable in pediatric and geriatric populations, where gentler approaches are essential. Additionally, the P1142A3 is engineered with multiple lumens, allowing simultaneous administration of fluids, medications, and blood products. This multipurpose functionality enhances efficiency in clinical settings, reducing the need for multiple venipunctures.

On the other hand, the Bard P1060A1 is designed with a focus on short-term vascular access. This catheter is particularly effective for emergency situations and critical care, offering rapid placement and reliable performance. One of its main characteristics is a streamlined design that minimizes the overall footprint, making it an ideal choice for patients with limited vein access. The P1060A1 is also equipped with a safety mechanism that reduces the risk of accidental needlesticks, addressing a critical safety concern in medical environments.

Overall, Bard's P1148A1, P1142A3, and P1060A1 products exemplify innovation in vascular access technology. With features designed to enhance insertion techniques, improve patient outcomes, and ensure safety in healthcare settings, these catheters stand as key tools in modern medical practice. Their robust design and advanced materials align with the needs of both healthcare providers and patients, making them essential components of effective vascular access strategies.