Daikin WMC Installation, Operation And Maintenance Manual page 25

Magnetic bearing centrifugal chillers c vintage 125 to 400 tons (440 to 1400 kw) hfc-134a refrigerant 50/60 hz
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Table 4: COMPRESSOR STATUS Possibilities
Complete STATUS Text
(in priority sequence)
OFF Manual Switch
OFF Compressor Alarm
OFF Unit State
OFF Evap Flow/Re-circulate
OFF Start to Start Timer=xxx
OFF Stop to Start Timer=xxx
OFF Staging (Next ON)
OFF Awaiting Load
RUN Unload Vanes-Max Amps
RUN Hold Vanes-Max Amps
RUN Load
RUN Hold
RUN Unload
SHUTDOWN Unload
NOTE: Timer countdown values will be shown where "xxx" is
shown in
Table
4.
(III) Action Buttons
• Chiller Control: AUTO button (normal start) and STOP
button (normal shutdown). These buttons are only
visible and active when the control is in the "Local"
mode. This eliminates the possibility of inadvertently
shutting off the unit locally when it is under control of
a remote signal such as a BAS. The rest of the screen
images shown in this manual will not display the AUTO
and STOP buttons; however, they will be visible on the
actual OITS if in "Local" mode.
• HISTORY button: Toggles between the Trend History
Screen
(Figure 49 on page
Screen
(Figure 50 on page
• VIEW button: Shows details about the unit status and
conditions. Pressing this button will toggle between the
Home View Screen
(Figure
Screen
(Figure
17).
• SET button: Toggles between the Setpoint Screens
(descriptions start on
page
changing setpoints and the Service Screen
page
40).
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Notes
Reason for the compressor being off
Overrides water temperature
command
Normal operation
Unloading during the shutdown
sequence
41) and the Alarm History
42).
16) and the Detail View
26) that are used for
(Figure 47 on
Detail View Screen
Pressing the VIEW button on the bottom of the Home View
Screen accesses the Detail View Screen, shown in
The Detail View Screen can also be accessed by pressing the
VIEW button from any other screen that contains the VIEW
button.
Figure 17: Detail View Screen
Data for one compressor is shown at a time on the Detail
View Screen. Pressing the COMP button in the lower-left hand
corner of the screen will toggle between compressor #1 and
compressor #2.
When first booted up, the Detail View Screen will be blank on
the right side, as shown in
appear on the right side of the Detail View Screen by pressing
available buttons. For example, pressing the STATE button
will bring up a display of the Compressor State Information, as
shown in
Figure
18, on the right side of the Detail View Screen.
Use the COMP button to toggle between the two compressors'
data.
Figure 18: Compressor State Information
23
IOM 1210-1 • MAGNITUDE
o
peraTIon
Figure
Figure
17. Various information will
MODEL WMC CHILLERS
®
17.

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