Deltech PYRAMID Series Instruction Manual page 6

pressure increases. Solid particulate load in the
compressed air supply will determine frequency of
service. Typically element changeout is recommended
at least annually.
5. 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. Dryer will resume previous operating mode.
6. Manual Operation
a. To manually turn the refrigeration system on or off use
'On/Off' button; Push 'Schedule On/Off and Enter' button
to return to schedule.
NOTE: After power interruption dryer will reenergize in
Manual override, refrigeration system off. To restart
Schedule: Push 'Schedule On/Off and Enter' button.
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, begin cooling wa-
ter 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.
Manual mode - push On/Off button - refrigeration compres-
sor will start and run, green Compressor-on light will illumi-
nate. In this mode compressor will run continuously and
will not be turned on and off by the monitor. MANUAL OVER-
RIDE will appear on interface panel.
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: Schedule 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
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CONTROL PANEL
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1. Temperature Indicator
2. Operator Interface Display
3. Power-on Light
4. Compressor-on Light
5. Alarm / Service Light
6. Schedule On/Off and Enter Button
a. In display mode: Press to toggle between
SCHEDULE RUNNING and MANUAL OVER-
RIDE.
b. In program mode:
i. Press to move to a lower level menu.
ii. Press to accept a value that has been edited.
7. Program Mode (i) and Esc
a. In display mode: Press and hold to enter
program mode.
b. In program mode: Press to move to a higher
level menu.
8. Up Arrow
a. In display mode: No function
b. In program mode:
i. Press to view the next item in a list or to
increment a variable to a higher value. Press
and hold for accelerated incrementing.
ii. When the top of the list (or highest value) is
displayed, pressing the up button will cause
the display to wrap to the bottom of the list (or
lowest value).
9. Down Arrow
a. In display mode: No function
b. In program mode:
i. Press to view the previous item in a list or to
increment a variable to a lower value. Press
and hold for accelerated incrementing.
ii. When the bottom of the list (or lowest value) is
displayed, pressing the down button will cause
the display to wrap to the top of the list (or
highest value).
10. 1/0: Press at any time to turn the dryer on/off.
11. Drain test: Press at any time to momentarily the
open drains (like the current emm).
12. Reset: Press at any time to clear the alarm/service
message (if shown) and the alarm LED.
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