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1.6 Operation
A. Verify that isolation valves are open. If the drain fails to
discharge after the valve is energized, the electronic
control circuit will repeatedly energize the valve in an
attempt to clear the discharge port. If, after 60 seconds,
the drain still fails to discharge, the control circuit then
switches to the alarm mode. In this mode the valve is
de-energized and the red alarm light is activated on
the drain and the dryer controller. The valve is then
automatically energized every 4 minutes for 5 seconds.
Check the drain operation. Push drain (push-to-test)
button on the Energy Management Monitor control
board to energize drain. A flow of condensate and/or air
should be present at the drain outlet. The alarm mode
automatically clears after the drain returns to normal
operation.
B. Condensate enters the reservoir
(1)
through the inlet
port. When the condensate level in the reservoir covers
the capacitance sensor, an electronic signal is sent to the
solid state countdown processor. The processor delays
the opening of the solenoid valve for a given period
of time. Once the time has elapsed, the solid state
processor transmits information to energize the coil in
the solenoid valve
(2)
. The magnetic force of the coil
causes the solenoid core
(3)
to move, closing the pilot
air supply line and opening the pilot air exhaust line.
After the pilot air above the diaphragm
(4)
is vented,
pressure in the reservoir opens the discharge port and
forces the condensate through the discharge port and
outlet piping.
2.0 OPERATION
2.1 Minimum/Maximum operating conditions
A.
Maximum inlet air pressure: refer to dryer serial number
tag
B. Minimum inlet air pressure: 30 psig (2.1 kgf/cm
2
)
C. Maximum inlet air temperature: 120°F (49°C)
D.
Maximum ambient temperature:
Air-cooled models: 110°F (43°C)
Water-cooled models: 130°F (54°C)
E. Minimum ambient temperature: 40°F (4°C)
2.2 Start-up
A.
Models 100-150:
Energize compressor by positioning the on/off switch in
the on (I) position. Compressor on light will illuminate.
On/Off Switch
Power-On Light Dewpoint Indicator (Green)
B.
Models 200-750:
Energize dryer. Green power on light will illuminate.
IMPORTANT: Energize dryer disconnect switch (provided by
others, see NEC) 24 hours before refrigeration compressor
is started! Never use the disconnect switch to shutdown
the dryer for a extended period of time (except for repair).
Failure to follow these instructions may result in a non-
warrantable compressor failure.
NOTE: If there is no power to the control board for a period
of two weeks or more, it may return to the default mode.
C.
Program Monitor
Press and hold Program Mode button until Main Menu screen
appears. Use the Up and Down arrow buttons to scroll
through the list of submenu choices. Press Enter button
to view the submenu that is displayed. Press ESC to exit the
Main Menu and return to Display mode.
1. Language selection
a. Use the ‘Up’ and ‘Down’ arrow buttons to scroll
through the list of languages (choice of 10 available:
English, Deutsch, Francais, Espanol, Italiano, Polski,
Dansk, Dutch, Norsk and Suomi).
b. Press ‘Enter’ button to select the language that is
displayed.
c. Push ‘ESC’ at any time to return to the Main Menu.
2. Setting Date & Time
a. Use the ‘Up’ and ‘Down’ arrow buttons to set minutes
(00 to 59). Press ‘Enter’ to accept new value.
b. Use the ‘Up’ and ‘Down’ arrow buttons to set hours
(00 to 23). Press ‘Enter’ to accept new value.
c. Use the ‘Up’ and ‘Down’ arrow buttons to set year
(00 to 99 representing 2000 to 2099). Press ‘Enter’
to accept new value.
d. Use the ‘Up’ and ‘Down’ arrow buttons to set month
(three letter abbreviation). Press ‘Enter’ to accept
new value.
e. Use the ‘Up’ and ‘Down’ arrow buttons to set day
(01 to maximum for the month and year selected).
Press ‘Enter’ to accept new value.
f. Push ‘ESC’ at any time to return to the Main Menu.
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