JOHNSON CONTROLS
31
SECTION 2 – OPTIVIEW CONTROL CENTER
FORM 160.69-O1
ISSUE DATE: 9/30/2012
2
Programmable
Login
Access Level Required:
VIEW
The OptiView™ Panel restricts certain operations
based on password entry by the operator. Three dif-
ferent access levels are provided as follows:
VIEW:
The panel defaults to the lowest access level which
is termed
VIEW
. In this mode, the chiller operating
values and setpoints can be observed, but no changes
can be made.
OPERATOR:
The second access level
is termed
OPERATOR
and will allow the customer
to change all of the setpoints required to operate the
chiller system. The
OPERATOR
access level reverts
to the V
IEW
level after 10 continuous minutes without
a keypress.
SERVICE
: In the event that advanced di-
agnostics are necessary, a
SERVICE
access level has
been provided. Only qualified service personnel utilize
this access level. This level provides advanced control
over many of the chiller functions and allows calibra-
tion of many of the chiller controls. The access levels
are listed above in hierarchical order beginning with
the lowest level and proceeding to the highest level.
Users logged in under higher access levels may per-
form any actions permitted by lower access levels.
The
OPERATOR
access level is accompanied by a
10-minute timeout. After ten (10) successive minutes
without a keypress, the panel will revert to the VIEW
access level. This prevents unauthorized changes to the
chiller if a user was logged in at a higher access level
and failed to logout. Proper procedure requires that
after making necessary setpoint adjustments the user
return to the Home Screen and logout.
Logout
Access Level Required:
OPERATOR
This key is displayed when a user is logged in at any
level other than
VIEW
. Pressing it will return the ac-
cess level to
VIEW
.
Access Level Required:
VIEW
Use this key to generate a hard-copy report of the
present system status. This provides a snapshot of the
primary operating conditions at the time the key is
pressed. The History page provides enhanced report-
ing capability. (See HISTORY below.)
Message Clear
Access Level Required:
SERVICE
When certain safety or cycling conditions have been
detected and the chiller has been shutdown, the main
status display of the chiller will continue to display a
message indicating the cause of the shutdown. Using
this key, the message can be cleared once the condition
has been removed.
Warning Reset
Access Level Required:
OPERATOR
Use of this key acknowledges a warning condition and
resets the message display associated with it.
Soft Shutdown
Access Level Required:
Operator
This key, available only when one or both compres-
sors are running, is used to initiate a Soft Shutdown.
If both compressors are running, the soft shutdown is
performed on both compressors simultaneously. Other-
wise it is performed on whichever compressor is run-
ning. A Soft Shutdown fully closes the Pre-rotation
Vanes prior to shutting down the compressor. This re-
duces bearing wear by eliminating compressor back-
spin at shutdown. Pressing this key causes the Vanes to
be driven to the fully closed position. While the vanes
are closing, “System Unloading Before Shutdown” is
displayed on the System Status line. When the Vane
Motor Switch (VMS) 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, if a Local Stop
is initiated with the Compressor Switch or any fault
other than “Leaving Chilled Liquid Temp – Low Tem-
perature”, “Remote Stop”, “Multi-Unit Cycling – Con-
tacts Open”, “System Cycling #X-Contacts Open” or
“Control Panel – Schedule” occur, it will immediately
enter “System Coastdown”. To restart the chiller after
an operator initiated Soft shutdown, the Compressor
Switch must be placed in the Stop/Reset position (O)
and then the Start position (3).
