Carrier 38AK012 Oil Charge Tables 1A and 1B, Service, Lubrication, Condenser-Fan Adjustment Fig

Oil Charge (Tables 1A and 1B)

38AKS UNITS — Allow unit to run for about 20 minutes. Stop unit and check compressor oil level. Add oil only if neces- sary to bring oil into view in sight glass. Use only Carrier- approved compressor oil.

Approved oils are:

Suniso 3GS

WF32-150

38AK UNITS — The 38AK units do not have a sight glass and are factory charged with the correct amount of oil.

ALL UNITS — Do not reuse drained oil or use any oil that has been exposed to atmosphere. Procedures for adding or re- moving oil are given in Carrier Standard Service Techniques Manual, Chapter 1, Refrigerants.

If oil is added, run unit for an additional 10 minutes. Stop unit and check oil level. If level is still low, add oil only after determining that piping system is designed for proper oil return and that system is not leaking oil.

SERVICE

When servicing unit, shut off all electrical power to the unit to avoid shock hazard or injury from rotating parts.

Cleaning — Inspect unit interior at the beginning of each cooling season and as operating conditions require.

CONDENSER COIL — Inspect coil monthly. Clean con- denser coil annually and as required by location or outdoor-air conditions.

Clean coil as follows:

1.Turn off unit power and tag disconnect.

2.Remove and save top panel screws on condensing unit.

3.Remove condenser coil corner post. See Fig. 10. To hold top panel open, place coil corner post between top panel and side panel. See Fig. 11.

4.Remove bracket holding coil sections together at return end of condenser coil. Carefully separate the outer coil section 3 to 4 in. (75 to 100 mm) from the inner coil section. See Fig. 12.

5.Use a water hose or other suitable equipment to flush down between the 2 coil sections to remove dirt and debris. Clean the outer surfaces with a stiff bristled brush in the normal manner.

6.Reposition the coil section and secure.

7.Remove the coil corner post from between the top panel and side panel.

8.Install the coil corner post and replace all screws removed in Step 2.

Lubrication

COMPRESSORS — Each compressor is charged with correct amount of oil at the factory. For additional information on 38AKS units, refer to the Oil Charge section above.

FAN MOTOR BEARINGS — Fan motor bearings are of the permanently-lubricated type. No further lubrication is required.

Condenser-Fan Adjustment (Fig. 13)

1.Shut off unit power supply and tag disconnect.

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

3.Loosen fan hub setscrews.

4.Adjust fan height as shown in Fig. 13.

5.Tighten setscrews.

6.Replace condenser-fan assembly.

Fig. 10 — Cleaning Condenser Coil

Fig. 11 — Propping Up Top Panel

Fig. 12 — Separating Coil Sections

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