Precautions Within 1 Hour After The Chiller Stop; Precautions After The Chiller Shutdown - Carrier 16LJ-F Series Operation Manual

2-1. PRECAUTIONS WITHIN 1 HOUR AFTER THE CHILLER STOP

(1) Never operate the cooling water pump within 1 hour after the chiller stop. Otherwise, there is a
possibility of chilled water freezing in the evaporator tube. Please operate the cooling water pump
automatically by a signal from the chiller.
(2) If you operate the cooling water pump within 1 hour after the chiller stop, the chilled water pump will
operate automatically to prevent chilled water freezing. Caution labels are put on the control pane
of chiller and field supply panel.
• Do not run the cooling water pump manually
within 1 hour after complete stop of the chiller.
• Do not run the cooling water pump manually
during the chiller operation. (including dilution
sequence)
Only pump operation interlocked by the chiller
is permitted.
• Please make sure the above to prevent serious
problem i.e. chiller water freezing and the tube
burst.
(3) When the chiller is used for cooling and you want to operate the cooling water pump within 1 hour
after the chiller shutdown for preventing cooling water freezing, be sure to operate the chilled water
pump at the same time for preventing chilled water freezing.

2-2. PRECAUTIONS AFTER THE CHILLER SHUTDOWN

Don't cut the power supply during the chiller is stopping.
-The chiller is watching vacuum level all the time.
-The chiller has a battery to maintain operating time and date during power failure. If power failure
continues for a long time, there is a possibility that the battery runs down.
CAUTION CAUTION
In case the cooling water pump is operated
manually within 1 hour after the complete stop of
the chiller, the chilled water pump also runs
automatically for chiller protection purpose.
2-2