Fan Motor Bearings, III. Outdoor FAN Adjustment Fig

Fig. 16 Ð Separating Coil Sections

II.LUBRICATION A. Compressors

Compressor has its own oil supply. Loss of oil due to a leak in the system should be the only reason for adding oil after the system has been in operation. See Start-Up, Oil Charging section.

B. Fan Motor Bearings

Fan motor bearings are permanently lubricated. No further lubrication is required.

III.OUTDOOR FAN ADJUSTMENT (Fig. 17)

1.Shut off unit power supply.

2.Remove outdoor-fan assembly (grille, motor, motor cover, and fan).

3.Loosen fan hub setscrews.

4.Adjust fan height as shown in Fig. 17.

5.Tighten setscrews.

6.Replace outdoor-fan assembly.

IV. COMPRESSOR REMOVAL

See Table 1 for compressor information. Follow safety codes and wear safety glasses and work gloves.

1.Shut off power to unit. Remove unit access panel (front of unit).

2.Remove refrigerant from system using refrigerant re- moval methods described in Refrigerant Service Tech- niques manual.

3.Disconnect compressor wiring at compressor terminal box. Disconnect high-pressure switch.

4.Remove bolts from discharge service valve and suction ¯ange.

CAUTION: Excessive movement of copper lines at compressor may cause higher levels of vibration when unit is restored to service.

5.Remove crankcase heater from compressor base.

6.Remove compressor holddown bolts and lift compres- sor off basepan.

7.Remove compressor from unit.

8.Clean system. Add new liquid line ®lter drier (bi¯ow type).

9.Install new compressor and position in unit. Connect suction and discharge lines to compressor. Connect high- pressure switch. Ensure that compressor holddown bolts are in place. Connect wiring. Install crankcase heater.

10.Evacuate and recharge unit.

11.Restore unit power.

Fig. 17 Ð Outdoor-Fan Adjustment

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575A specifications

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