6
3. Setting Schedule
a. Use the ‘Up’ and ‘Down’ arrow buttons to select desired
“Day of week + on/off ”. Press ‘Enter’ to accept new
value
b. Use the ‘Up’ and ‘Down’ arrow buttons to set hour (00
to 23). Press ‘Enter’ to accept new value
Note: If the hour setting is ‘IGNORE’, Press ‘Enter’
again to move the cursor under the “Day of week +
on/off”.
c. Use the ‘Up’ and ‘Down’ arrow buttons to set minutes
(00, 10, 20, 30, 40, 50; not shown if hour setting is
‘IGNORE’). Press ‘Enter’ to accept new value and
return to “Day of week + on/off ”. Repeat steps a
through c as needed.
d. Push ‘ESC’ at any time to return to the Main Menu.
4. Hours To Service
a. Use the ‘Up’ and ‘Down’ arrow buttons to scroll through
the range of permissible values (0 to 8760) before
service reminder is initiated. Press ‘Enter’ to accept
new value. (Only hours that refrigeration compressor is
operating are counted).
b. Press ‘ESC’ at any time to return to the Main Menu.
NOTE: On dryers with air-cooled condensers, regular
condenser cleaning is recommended. Dirtiness of
ambient air at installation site will determine frequency
of service. Typically once a month is recommended.
NOTE: All dryers contain an integral 3 micron filter.
As the filter element accumulates solid contaminants,
differential pressure increases. Solid particulate load in
the compressed air supply will determine frequency of
service. Typically element changeout is recommended
at least annually.
5. Alarm History
a. Use the ‘Up’ and ‘Down’ arrow buttons to scroll through
the last twenty (20) alarms beginning with the most
recent alarm.
NOTE: The number at the end of the top line with a
cursor underneath identifies which of the past twenty
alarms is being displayed.
b. Press ‘ESC’ at any time to return to the Main Menu.
c. To clear the alarm history, press and hold the ‘Enter’
button then press the ‘Up’ arrow button. Release both
buttons.
6. Push ESC button to exit program mode.
NOTE: If after 60 seconds no button is pressed while
in Program Mode, the audible alarm sounds for five (5)
seconds and the controller exits program mode. Dryer will
resume previous operating mode.
C. Starting Dryer
IMPORTANT: Dryer must be energized 24 hours before starting
refrigeration compressor.
NOTE: It is recommended that dryer be started 15 minutes
before compressed air flow begins.
1. On water-cooled models: after 24 hours and before
starting dryer, begin cooling water flow.
2. Check for proper electrical voltage.
3. Slowly pressurize unit air side by opening inlet isolation
valve. Check for leaks.
4. After 15 minutes, open outlet isolation valve slowly.
5. Close air bypass valve.
6. Dryer may be operated in Manual or scheduled modes.
NOTE: Check for correct phasing of unit. On air-cooled
models: check fan rotation (air must be pulled through the
condenser). Fans may not start immediately or may cycle on
and off. If rotation is in the wrong direction follow the procedure
below. On water-cooled models: After starting dryer if an
unusual noise is heard and the discharge line does not get
hot, stop the dryer, reverse two power leads, restart, and verify
discharge line gets hot.
a. Manual mode - push ‘On/Off ’ button - refrigeration
compressor will start and run, green Compressor-on
light will illuminate. In this mode compressor will run
continuously and will not be turned on and off by the
monitor. MANUAL OVERRIDE will appear on interface
panel.
b. Schedule mode - push ‘Schedule On/Off and Enter’
button. SCHEDULE RUNNING will appear on the
interface panel. The refrigeration compressor will
continue to be on or off (as selected in the Manual
Override Mode) until the next scheduled event. The
compressor will then turn on or off as programmed.
NOTE: Dryer may be returned to the manual mode at any
time using the ‘Schedule On/Off and Enter’ button. MANUAL
OVERRIDE will appear on interface panel. To reinstitute
Schedule, push the ‘Schedule On/Off and Enter’ button again.
NOTE: Restart after the power interruption. Unit will be in
MANUAL OVERRIDE mode, refrigeration compressor, off
when power is restored after power interruption.
7. To reinstitute SCHEDULE RUNNING: push ‘Schedule On/
Off and Enter’ button.
IMPORTANT: Dryer must be energized 24 hours before
refrigeration compressor is started.
D. Operating Check Points
1. Check that green Power-on light is illuminated.
2. Check that green Compressor-on light is illuminated if
dryer is on in the manual mode or it is a scheduled on
time.
IMPORTANT: Refrigeration compressor must be restarted
after power interruption.
3. Check Interface Panel.
NOTE: Interface panel will scroll through three screens
(Current Time/Operating Status, Hours to Service, and Total
Operating Hours).
a. Verify that current time is correct.
b. Check HRS TO SERVICE: this indicates time
remaining until service is required; allow time for
required maintenance items to be ordered.
c. Check operating status:
MANUAL OVERRIDE - Dryer is either running
continuously (not being controlled by the scheduled
on/off times) or the refrigeration compressor has been
shut off using the ‘On/Off’ button.
