ULT Energy-saving Series
After-sales Service Manual
15
4.3 Structure of electric cabinet
Master
control
board
Battery
High temperature relay
Terminal block
Electric
cabinet
Filter
R232/485
serial port
module port (optional)
Battery switch
Remote alarm wiring
Power switch
Condenser fan
Low temperature relay
Computer board test button: Press the test
button to see if all relay lights light
continuous and circularly, if not, check if the
relay that is not on has a fault.
Temperature
adjustment
screw
Signal cable
connection
of
display
board
USB
signal
cable
connection
Voltage adjustment screw
Door
opening
alarm connection
Connection between
the main sensor and
computer board
Connection
between
heat
exchange sensor
and
computer
board
Connection
between
condenser sensor
and
computer
board
Remote
alarm wiring
Balance
hole
heating
block
connection
(yellow)
Battery charging
connection
(white)
5 V cold
chain power
supply
connection
High
temperature
compressor
Cryogenic
compressor
Conden
ser fan
Suction
Fan
Pressur
e boost
Pressure
reduction
Capillary
tube heating
wire
