Operating instructions

105
separator, cooler heaters, oil solenoids, unloader solenoids and
status points (alarm relays, running status and chiller capacity).
If there are no keys pressed for 5 minutes, the active test mode
will be disabled.
To enter the Manual Control mode with the Navigator™
display, the Enable/Off/Remote Contact switch must be in the
OFF position. Move the LED to the Service Test mode. Press
to access TEST. Press to access T.REQ.
Press and the display will show OFF. Press
and OFF will flash. Enter the password if required.
Use either arrow key to change the T.REQ value to ON and
press . Place the Enable/Off/Remote Switch in the
enable position. Manual Control mode is now active. Press the
arrow keys to move to the appropriate item. To activate an item
locate the item, press and the display will show OFF.
Press and OFF will flash. Use either arrow key to
change the value to ON and press . The item should
be active. To turn the item off, locate the item, press
and the display will show ON. The chiller must be enabled by
turning the Enable/Off/Remote Contact switch to Enable. Press
and ON will flash. Use either arrow key to change
the value to OFF and press . The item should be
inactive.
To enter the Quick Test mode, the Enable/Off/Remote
Contact switch must be in the OFF position. Move the LED to
the Service Test mode. Press to access TEST. Use
the key until the display reads QUIC. Press to
access Q.REQ. Press and the display will show OFF.
Press and OFF will flash. Enter the password if
required. Use either arrow key to change the QUIC value to
ON and press . Quick Test mode is now active. Fol-
low the same instructions for the Manual Control mode to acti-
vate a component (see Table 63).
Example — Test the condenser fan A1.
Power must be applied to the unit. Enable/Off/Remote
Contact switch must be in the OFF position.
Test the condenser fans, cooler pump(s) and alarm relay by
changing the item values from OFF to ON. These discrete
outputs are then turned off if there is no keypad activity for
10 minutes. Test the compressor and minimum load valve sole-
noid (if installed) outputs in a similar manner. The minimum
load valve solenoids will be turned off if there is no keypad
activity for 10 minutes. Compressors will stay on until the op-
erator turns them off. The Service Test mode will remain en-
abled for as long as there is one or more compressors running.
All safeties are monitored during this test and will turn a com-
pressor, circuit or the machine off if required. Any other mode
or sub-mode can be accessed, viewed, or changed during the
Manual Control mode only. The STAT item (Run Sta-
tus
 VIEW) will display “0” as long as the Service mode is
enabled. The TEST sub-mode value must be changed back to
OFF before the chiller can be switched to Enable or Remote
contact for normal operation.
NOTE: There may be up to a one-minute delay before the
selected item is energized.
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