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FORM 160.54-M1
ISSUE DATE: 10/25/2019
SECTION 36 - SOFTWARE ENHANCEMENTS
SI0006 - SOFTWARE ENHANCEMENTS EFFECTIVE MAY 2001
GENERAL
Beginning May 2001, an enhanced flash memory card
will be supplied with new production NEMA 1-4 and
CE chillers. New features are outlined below and are
also included in OptiView Control Panel – Operation
(Form 160.54-O1) and Service Manual (Form 160.54-
M1).
Flash memory card versions and part numbers are ap-
plied as follows:
• NEMA 1-4 Chillers
C.MLM.01.05A.102 (031-01797-001)
• CE Chillers
C.MLM.01.05A.203 (031-01797-002)
The enhanced flash cards are also available from the
Baltimore Parts Distribution Center for retrofit to ex-
isting chillers.
SURGE PROTECTION
The surge protection feature detects surge events and
provides a running count of the events that occur over
the lifetime of the chiller. An excess surge threshold
can be programmed to detect excessive surging. If ex-
cess surging is detected, it can be configured to shut-
down the chiller or initiate a special surge correction/
avoidance mode or simply display a warning message.
A SURGE PROTECTION screen displays all param-
eters relevant to this feature.
TREND Screen – TRIGGERED CHART
A triggered chart can now be created, which is in addi-
tion to the one screen and continuous chart types that
can be created in previous flash memory card versions.
With the triggered chart type, data collection can be
set to start or stop based upon the status of up to two
operator selected conditions (triggers) and a selected
trigger delay. If start is selected, data collection will
not begin until all triggers have been satisfied and any
selected trigger delay has elapsed. data collection will
stop after the completion of one screen of data. If stop
is selected, data collection will begin when manually
initiated, and will stop when all triggers have been sat-
isfied and any selected trigger delay has elapsed.
JOHNSON CONTROLS
This feature is a valuable troubleshooting tool for Ser-
vice technicians. It allows an event that occurs during
unattended hours to be captured for viewing at a later
time. The trigger event results in a screen of frozen
trend data that will remain on the screen until manually
cleared.
DISPLAY OF SERVICE PHONE NUMBERS
Two service phone numbers (regional and local), with
labels, can be displayed on the OPERATIONS screen.
The default value for the regional number is the North
American toll free number. However, the label and
number can be changed to any desired value. The local
label and number can also be entered.
Hot gas bypass ENHANCEMENT
In previous flash memory card versions, when the
Leaving Chilled Liquid Temperature decreased to the
minimum load setpoint, the hot gas valve was opened
to 100% . In this version, the valve will be opened to the
position programmed as the maximum open setpoint
(25% to 100%), which allows for better control of the
minimum load conditions. After the minimum load op-
eration is activated, the valve will be closed propor-
tionately as the Leaving Chilled Liquid Temperature
(LCLT) increases to the LCLT setpoint.
Evaporator Transducer or Temperature
Sensor Safety Shutdown
In previous flash memory card versions, the conditions
for this safety shutdown were checked after the first 10
minutes of chiller run. Under certain operating condi-
tions, this would result in unnecessary shutdowns. In
this version, in addition to the previous criteria, the
shutdown conditions are not checked unless smart
freeze is enabled and the evaporator refrigerant tem-
perature RT7 (if enabled) or evaporator saturation tem-
perature (derived from the evaporator pressure trans-
ducer) is less than 32° F.
JCI COMPANY CONFIDENTIAL
36
333
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