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4.1 Overtemperature Protection
All Carlyle
®
Compound Cooling 06CC models are sup-
plied with a discharge temperature sensor located in the
high-stage cylinder head of the compressor. This sensor
is designed to open at 295 F (±5 F) and to close at 235 F.
The discharge temperature sensor operates as an auto-
matic reset device; however, Carlyle recommends that it
is wired into the control scheme in a manner to function
as a manual reset device.
NOTE: The 16 to 37 cfm models also have an internal
thermostat embedded in the motor windings. This inter-
nal thermostat has a set of contacts which are rated for
240 VA and are intended to open the compressor contac-
tor circuit in the event of an overtemperature condition.
4.2 Overcurrent Protection
The 16 to 37 cfm model versions are supplied with motor
overloads located inside the compressor terminal box
intended for overcurrent protection. The 50 to 99 cfm
model versions require the application of a Carlyle
approved calibrated circuit breaker or a solid-state over-
load relay.
The specific calibrated circuit breaker or overload relay
for each model is shown in sections 1.4 and 1.6 of this
document.
4.3 Internal Pressure Relief Valves
Carlyle 06CC models between 50 and 99 cfm utilize
internal pressure relief valves to comply with agency
safety requirements. One of these pressure relief valves
is located on the low-stage valve plate and relieves pres-
sure from the intermediate-stage to the low-stage in the
event of an over-pressure condition. The second relief
valve is located in the body of the compressor under-
neath the center head valve plate and is intended to
relieve pressure from the high-stage to the intermediate-
pressure stage. These pressure relief valves are safety
devices and are not intended to reset with full function
after opening. These pressure relief valves are field
replaceable.
4.0 Compressor Features
