Johnson Controls YORK OPTIVIEW CONTROL CENTER, Operation Manual

Page: 101 / 142

JOHNSON CONTROLS
101
FORM 160.10-O1
ISSUE DATE: 4/27/2018
3
SECTION 3 - OPTIVIEW DISPLAY MESSAGES
INTRODUCTION
The System Status bar of the OptiView display con-
tains a Status line and a Details line. The System Status
line contains a message describing the operating state
of the chiller. The System Details line displays warn-
ing, cycling, safety, start inhibit and other messages,
providing further details of the Status Bar messages.
The Status Messages listed below are displayed on the
Status line. All other messages are displayed on the
Details line.
Messages are displayed in different colors to distin-
guish between the different types of messages. The
message type and colors displayed are as follows:
TABLE 2 - STATUS LINE MESSAGES AND COLORS
MESSAGE COLOR
Normal Operation Green
Warning Yellow
Cycling Shutdown Orange
Safety Shutdown Red
SYSTEM STATUS MESSAGES
System Ready To Start
The chiller is shut down and ready to start upon receipt
of a local or remote start signal.
Cycling Shutdown – Auto Restart
The chiller is shut down on a CYCLING shutdown.
The cause of the shutdown is still active and is dis-
played on the Details line of the Status Bar. The chiller
will automatically restart when the CYCLING condi-
tion clears.
Safety Shutdown – Manual Restart
The chiller is shut down on a SAFETY shutdown. The
cause of the shutdown is still active and is displayed
on the Details line of the Status Bar. The chiller can be
started after the safety condition clears and the opera-
tor moves the compressor switch to the STOP/RESET
(O) position.
System Prelube
A chiller start has been initiated and the pre-start lu-
brication is being performed. A TIME REMAINING
countdown will begin in the system status bar. The
prelube duration is configured from the Oil Sump
screen. The prelube duration must never be changed by
anyone other than a qualified service technician.
System Run
The chiller is running under the condition described in
the Details Line of the Status Bar.
System Coastdown
The chiller has shut down and the post-run lubrication
is being performed. A TIME REMAINING countdown
timer will appear in the system status bar. Coastdown
duration is determined by the setpoint on the Oil Sump
screen. The duration of system Coastdown should nev-
er be changed by anyone other than a qualified service
technician.
Start Inhibit
The chiller is prevented from starting due to the reason
displayed on the Details line of the Status bar.
Vanes Closing Before Shutdown
Displayed while the pre-rotation vanes are closing dur-
ing a soft shutdown. Soft shutdowns are initiated by
the following:
1. Leaving Chilled Liquid – Low temperature
2. Remote Stop
3. Multi-Unit Cycling – Contacts Open
4. System Cycling – Contacts Open
5. Control Panel – Schedule
6. Operator Initiated at Keypad
During soft shutdowns, the vanes are driven fully
closed prior to shutting down the compressor. When
the vane motor switch closes, indicating the vanes have
fully closed (or 3.5 minutes have elapsed, whichever
occurs first), the
RUN
signal is removed from the com-
pressor motor starter and a SYSTEM COASTDOWN
is performed.
While the vanes are closing during any soft shutdown,
if a local stop is initiated with the compressor switch or
any faults other than those listed above occur, the soft
shutdown is terminated. The control center will then
perform a SYSTEM COASTDOWN.