York OPTIVIEW Operation Manual page 19

FORM 160.78-O2
ISSUE DATE: 5/22/2017
ERATOR and will allow the customer to change all
of the setpoints required to operate the chiller system.
The OPERATOR access level reverts to the VIEW
level after 10 continuous minutes without a keypress.
SERVICE: In the event that advanced diagnostics are
necessary, a SERVICE access level has been provid-
ed. Only qualified service personnel utilize this access
level. This level provides advanced control over many
of the chiller functions and allows calibration 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 perform 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.
Print
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 Screen.) This option
will not be present if the chiller is presently configured
to print History, New Data, which continuously logs.
Clear Fault
Access Level Required: VIEW
(Software version C.OPT.16.01.213 limited to SERVICE)
When safety conditions have been detected, the chiller
is shutdown, and the main status display of the chill-
er will display a message indicating the cause of the
shutdown. Using this key, the fault and message can be
cleared once the condition has been removed. The key
only shows when the condition can be cleared.
JOHNSON CONTROLS
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
Warning Reset
Access Level Required: OPERATOR
Use of this key acknowledges a warning condition and
resets the message display associated with it.
Start
Access Level Required: OPERATOR
This key is only available when the chiller is in local
mode and does not have a local run request. Pressing
this key allows selection of enter to run or cancel to
abort to stopped.
Soft Stop
Access Level Required: OPERATOR
This key is only available when the chiller is in local
mode and has a local run request. It shows in place
of the start key. Pressing this key allows selection of
enter to stop or cancel to remain running. Enter causes
the chiller to close pre-rotation vanes, open Hot Gas
Bypass (if available), and ramp the chiller to stopped.
This is the preferred method for performing a local
shutdown.
NAVIGATION
System
Used to provide additional system information.
Evaporator
A detailed view of all evaporator parameters, including
the programmable Leaving Chilled Liquid Setpoints.
Condenser
A detailed view of all condenser parameters, including
control of the liquid level functions.
Compressor
A detailed view of all the compressor parameters. This
includes surge protection, Magnetic Bearing Control,
Variable Geometry Diffuser, and PRV calibration.
Capacity Control
A detailed view of all the parameters associated with
capacity control.
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