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Manual 2100-341

Page 13

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.

TABLE 8

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.

ledoM

detaR

wolfriA

FeergeD59

erutarepmeT

FeergeD28

erutarepmeT

1A4221P

1A0321P

1A6321P

008

0001

0011

85-65

95-75

56-36

06-85

FIGURE 9

FAN BLADE SETTING DIMENSIONS

ledoMAnoisnemiD

1A4221P

1A0321P

1A6321P

"00.1

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 9 in

this manual covering all models on cooling cycle. It is

imperative to match the correct pressure table to the

unit by model number.

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 8.

1 2 ... 10 11 12 13 14 15 16 17 18

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