CHAPTER 4 - Service and Maintenance
4.1
Introduction
4.1.1
The NAC-600 marine air conditioner requires periodic servicing and preventive maintenance to assure its proper
operation. The service information and maintenance requirements are found below. Periodic maintenance, as
prescribed in the following paragraphs for the compressor, air filters and condenser, are defined.
4.2
Removal of Compressor
1)
Make sure electrical power to unit is OFF.
2)
Front seat suction and discharge service valves.
3)
Slowly remove refrigerant charge from compressor.
Remove low pressure wires from junction box.
4)
Disconnect high pressure control tubing.
5)
Remove compressor conduit fasteners and disconnect wires from terminals.
6)
Remove nuts which hold compressor unit to vibration isolators.
7)
Remove compressor Care must be taken in this removal operation to prevent damage to the
refrigerant lines.
4.2.1
Reinstalling Compressor -
1)
Slide compressor unit up and onto isolators and bolt in place.
2)
Replace old discharge and suction service valve gaskets with new ones before attaching the valves to
the compressor.
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