MovinCool Classic 40 Service Manual - Manual (Page 38)

Operation Section
38
(6) Temperature control
• During cool mode, temperature control changes the 52CM (compressor on/off) relay status
according to RTS temperature in the available range (-4 °F to 140 °F (-20 °C to 60 °C)).
(7) Fire alarm signal control
• When receiving the signal from the fire alarm control panel, the buzzer sounds, and the 52CT
(signal output) relay on the relay board turns on.
5.10 Compressor
(1) Compressor motor
• The compressor motor is a three-phase motor and is contained within the same housing as the
compressor.
Specifications:
(2) Compressor overload relay
• An internal compressor overload relay is used to protect the compressor motor. The relay
interrupts the flow of current when there is an overload condition and, high temperature builds
up in the compressor.
Rated Voltage 230 V
Rated Output 2300 W
Operating Temperature Trip Time in Seconds
OFF (Open Contacts) ON (Closed Contacts) Current Minimum Maximum
221 °F (105 °C) 142 °F (61 °C) 47 A 2 10
I002624
ON
OFF
52CM
(Compressor Relay)
(Set Temp. -3 °F)
(Set Temp. -1.7 °C) Set Temp
Inlet Air Temperature
When compressor operation continues within this range for more
than 5 minutes, the 52CM relay stops.