Low Suction Pressure - Cornelius CCM0330 Service And Maintenance Manual

Low Suction Pressure

Does
installation
meet
guidelines?
YES
Is the water
flow over the
Evaporator
correct?
YES
Check for correct
head pressure, see
page E10
OK
Check TXV for
moisture based
restriction
WET SYSTEM
Replace drier,
evacuate and
recharge
system
NOT OK
remote unit?
Troubleshooting
Tree page C18
DRY SYSTEM
Check for refrigerant
tubing restriction,
Check Evaporator
coil separation, see
NO
NO
Is the
machine a
YES
See
NOT OK
crimps, etc.
OK
NOT OK
page E4
OK
TXV possibly
defective, see
page E3 and
page E4
Page C7
Troubleshooting Trees
deficiency in
installation
Troubleshooting
Tree on page
Low charge,
NO
locate and
repair leak,
evacuate and
Correct
restricted tubing
Replace
defective
Evaporator
Correct
Go to
C12
recharge
system