User Manual for PR Refrigerators
Beverage-Air
Rev. 10/20
Beverage-Air
13
ON
OFF
COMPONENT
OPERATION
CONTROLLER ACTION OPERATION
CONTROLLER ACTION
COMPRESSOR
Compressor turns
on when the cabinet
temperature is above
the sum of the set
point and the dead
band
The Compressor
Contact is energized
Compressor turns
off when the cabinet
temperature is equal
to or less than the set
point
The Compressor
Contact is de-
energized
RTN400 terminals
10, 11
(New974 - Terminal
#4)
CONDENSER FAN
The Condenser Fan
turns on when the
Compressor is running
The Condenser Fan
is wired to the light
relay on control
The Condenser Fan
turns off when the
Compressor is not
running
The Condenser Fan
is wired to the light
relay on control
RTN400 terminals
10, 11
RTN400 terminals
10, 11
EVAPORATOR FAN
The Evaporator Fan
runs continuously.
When the unit is
plugged in and the
evaporator has
achieved its run set
limit.
The Evaporator Fan is
connected to control
relay.
The Evaporator Fan
runs continuously.
When the unit is
plugged in and the
evaporator has
achieved its run set
limit.
The Evaporator Fan is
connected to control
relay.
RTN400 terminals 4, 5
RTN400 terminals 4, 5
LIGHT
The light will turn
on when the door is
open or door button is
pressed (LSR/F light
switch behind bottom
grille)
The Light Contact is
energized
The light will turn
off when the door is
closed or the door
button is pressed
The Light Contact is
de-energized
RTN400 terminals
13,14
RTN400 terminals
13,14
FACE HEATER
Face heater is on
when condensing unit
is on
Heater is wired with
condensing unit power
Face heater is off
when condensing unit
is off
Heater is wired with
condensing unit power
Condition
Compressor
Condenser Fan Evaporator Fan
Lights
Cabinet Temp > Set point + Dead band
ON
ON
ON
ON or OFF
Cabinet Temperature <= Set point
OFF
OFF
ON
ON or OFF
Defrost
OFF
OFF
ON
ON or OFF
SEQUENCE OF OPERATIONS