4500P-7500 USER MANUAL SECTION
20
2.7 WS CONTROLLER/KEYPAD
Refer to Figure 2-7. The WS Controller keypad has
two main pads for compressor control. To start the
compressor operation, press the green Start pad
.
To stop compressor operation, press the red Stop
pad . The Run mode indicator lights up
whenever the control is in an operating mode.
2.8 LCD DISPLAY
The display's normal view shows the compressor
package's discharge pressure, internal temperature,
and the operating mode. The modes are MANUAL,
OFF, AUTOMATIC, or FAULTED
Figure 2-8
Refer to Figure 2-8 and Figure 2-9. The lower line is
occasionally interrupted to describe the compressor
package's operating state.
Figure 2-9
Refer to Figure 2-10. If a machine fault occurs,
the red fault indicator will light up, and the
display will indicate that a fault has occurred.
Figure 2-10
Refer to Figure 2-11. The lower line periodically
will display the cause of the fault. Refer to
service instructions to correct the cause. Press
the Stop pad to reset the controller.
Figure 2-11
Refer to Figure 2-12. Press the Down arrow to
display additional information about the compressor.
The upper line will indicate "Compressor Status" and
the name of the temperature, pressure, or other
measurement. The lower line indicates the present
reading.
Figure 2-12
Refer to Figure 2-13. When you continue beyond the
status information, the display will show a list of
control settings. The upper line will indicate "Show
Setting" and the name of the setting. The lower line
shows the present value.
Figure 2-13
Refer to Figure 2-14. To change the setting, press
the Enter pad . The display indicates that you
are in a change mode with reverse characters. Use
the Up or Down arrow keys to change the
setting, and press Enter again to save the new
setting.
Figure 2-14
Refer to Figure 2-14. If there is no keypad
activity, the display will return to normal view in
about one minute. If the Start or Stop buttons are
pressed, the display also returns to normal view.
If either of these occur, the setting will not be
altered.
If there are any warnings or recommended
service instructions, these will be periodically
displayed on the normal view.
The list of displays may be navigated from either
direction by using the Up or Down arrow
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