Introduction
8
SS-SVX004C-EN
Circuit Breakers/Motor Starter Protectors
Individual overload protection is provided by circuit
breaker(s), and motor starter protectors. These switches
open to de-energize a failed component if an electrical
overload condition is encountered. They must be
manually reset once the overload condition is cleared.
Receiver
An optional receiver is provided for storage of excess
refrigerant in the refrigeration cycle. Typically used on
RCU-O units for cold weather applications, the receiver is
provided for units using flooded head pressure control.
Safety Features
A factory-mounted service disconnect switch is provided
as standard on RCU-O units and as an option on RCU-I
units. A service disconnect switch electrically isolates the
unit during routine maintenance. The handle of the switch
may be locked in the OFF position to prevent unauthorized
operation. RCU units incorporate state of the art
component protection with the use of motor starter
protectors and circuit breakers.
Low and high-pressure switches are provided for the
refrigeration circuit. The pressure switches are
nonadjustable encapsulated control switches. If a high
pressure switch is tripped for any reason, it must be
manually reset. The cause for tripping the high pressure
switch must be determined. The low pressure switches
reset automatically. These pressure switches are installed
as safety devices and help prevent compressor failure or
other serious damage to the system.
