Carrier 38GNA - Manual (Page 6)

2. Remove refrigerant from system.
A CAUTION
Do not vent refrigerant to atmosphere. Recover during system
repair or final unit disposal.
3. Disconnect compressor wiring at compressor terminal box.
4. Using a tubing cutter, cut suction and discharge (hot gas) lines
at convenient place near compressor for easy reassembly to
new compressor.
5. Remove compressor hold-down bolts and lift compressor out.
6. Remove mounting grommets from old compressor and install
on new compressor.
7. Carefully unbraze suction and discharge line piping stubs from
old compressor. If oil vapor in piping stubs ignites, use
quenching cloth. Braze piping stubs onto new compressor.
8. Install new compressor in unit. Braze suction and discharge
lines to compressor piping stubs at points where cut (Step 4),
using field-supplied copper slip couplings. Ensure that com­
pressor hold-down bolts are in place. Connect wiring.
9. Clean system. Add new liquid line filter drier.
10. Evacuate and recharge unit.
Step 6—Cleaning Condenser Coil
Disconnect electrical power before removing access panel. Re­
move rear access panel. Since air is drawn into front of unit at
bottom and discharged out the same side at the top, dirt collects on
front of coil and unit. To clean coil, flush out from inside of unit
with a high velocity stream of water. Be careful not to damage fins.
If coil is coated with oil or grease, clean it with a mild detergent
or an approved coil-cleaning agent, then rinse with clear water. Do
not allow water to get into compressor and unit control box.
Cabinet is equipped with drain holes at bottom of front edge. Be
sure holes are unclogged and free to drain.