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IOM 1210-7 • MAGNITUDE
®
MODEL WMC CHILLERS
o
peraTIon
The Compressor State Information is basically a compilation
of the events that the chiller sequences through at startup. A
green light indicates that a particular sequence requirement
has been satisfied. It is recommended that this information
be viewed during the startup sequence. One can see the
requirements light up as they are met and quickly see why a
non-start may have occurred. For instance, the “Evap Flow
OK” item will light when the evaporator flow switch is closed
by flow. The bottom sections (from “RUN” down) of the
Compressor State Information are in effect during the shut
down process. The sequence transitions back to OFF at this
point and the OFF light will be illuminated.
Pressing the COMP button on the Detail View Screen displays
the status of the compressor digital inputs and outputs, as
shown in
, on the right side of the Detail View Screen.
For dual compressor units, use the COMP button to toggle
between the two compressors’ data. Many of the inputs and
outputs shown in the Compressor Inputs/Outputs Information
will also appear under the Compressor State Information
(
) since they are part of the startup sequence and
define the compressor state at any given time.
Figure 27:
Compressor Inputs/Outputs Information
The Power screen can be accessed by pressing the COMP
button and will display the current, voltage, and power of the
chiller, as shown in
Pressing the EVAP or COND buttons
on the Detail View Screen will display pertinent vessel
temperatures and pressures. The Evaporator Information and
Condenser Information are shown in
respectively.
Power Information
Figure 28:
Evaporator Information
Figure 29: Condenser Information
Pressing the COND or EVAP button on the Detail View Screen
displays the unit digital inputs, digital outputs, and analog
outputs. Note that operation of the condenser and evaporator
water pumps and operation of the tower constitute most of the
data flow. An illuminated block indicates that either an input or
output signal exists.
View Menu Screen
As with the Detail View Screen, information will appear on
the right side of the View Menu Screen by pressing available
buttons. Much of the available information is the same as what
is found on the Detail View Screen. For example, pressing the
Compressor STATE, Compressor I/O, Unit I/O, EVAP, or COND
buttons will display the same information as what is available
from the Detail View Screen. Reference the Information figures
for
more details.
