JOHNSON CONTROLS
112
FORM 155.30-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
SECTION 6 – OPERATION
HOURLY OPERATION HISTORY SCREEN
LD20032_UL
FIGURE 52 -
HOURLY OPERATION HISTORY SCREEN
To view the Hourly Operation History screen, press the
Hourly Operation
button in the History Menu screen
section of the Data screen.
The Hourly Operation History screen shows operation-
al information for the last 12 hours and contains the
following fields of information:
The heading of the screen includes the X time ago and
the Measured Date and Time. Buttons are available to
select measurements for up to 12 times ago, to cover
the 12 hour period.
The following information displays:
Operation:
operation status of the chiller
Ope. Method:
selected operation method (local or re-
mote)
Sol. Pump:
operation status of the solution pump
Ref. Pump:
operation status of the refrigerant pump
Ope. Hours:
how many hours the chiller has been op-
erating
Ope. Frequency:
how many times the chiller has
started using the
OPER.
button or the remote start
signal
Fail. Freq.:
how many times the chiller has had a
failure alarm
Alarm Freq.:
how many times an alarm has been
triggered for the chiller
Purge Freq.:
how many times a purge has been per-
formed automatically
The Chilled water section of the screen shows you the
following information:
In Temp.:
temperature of the chilled water measured
as it enters the evaporator.
Out Temp.:
temperature of the chilled water mea-
sured as it leaves the evaporator.
The Cooling Water section shows you:
In Temp.:
temperature of the cooling water measured
as it enters the absorber.
Out Temp.:
temperature of the cooling water mea-
sured as it leaves the condenser.
