Carrier PC211 specifications Starting Equipment

Starting Equipment

The 19XL requires a motor starter to operate the centrifugal hermetic compressor motor, the oil pump, and various auxiliary equipment. The starter serves as the main field wiring interface for the contractor.

Three types of starters are available from Carrier Corporation: solid-state, wye-delta, and across-the-line starters. See Carrier Specification Z-375 for specific starter requirements. All starters must meet these specifications in order to properly start and satisfy mechanical safety requirements. Starters may be supplied as separate, free-standing units, or may be mounted directly on the chiller (unit mounted) for low-voltage units only.

Inside the starter are 3 separate circuit breakers. Circuit breaker CB1 is the compressor motor circuit breaker. The disconnect switch on the starter front cover is connected to this breaker. Circuit breaker CB1 supplies power to the compressor motor.

WARNING ! WARNING

The main circuit breaker (CB1) on the front of the starter disconnects the main motor current only. Power is still energized for the other circuits. Two more cir- cuit breakers inside the starter must be turned off to disconnect power to the oil pump, PIC controls, and oil heater.