9
6.9 Segregated alarm connections are provided on
a labeled terminal board on the rear of the cabinet.
The output of this terminal board is dry contact,
factory configured for close in alarm indication of
each alarm function of the dehydrator, as indicated.
For OPEN in alarm configuration, see Appendix A
for optional Alarm Configuration.
6.10 If the dehydrator is to be part of an AT S con-
trolled system you should verify the operation of the
air dryer before connecting the unit to the controller.
The ATS300 bus cable termination is with the DB9
male and female connectors on the back of the Air
Dryer Interface Board. Connect the cable from the
AT S 300 or from another Air Dryer to the Input RS485
connector and then daisy chain another Air Dryer
to the RS485 Output Connector. NOTE: The last
Air Dryer in the chain requires a termination jumper
indicating the last dryer. To configure the last dryer
requires a Jumper to be installed on the Alarm/ATS
Interface board. See Appendix A f o r ATS300 wiring.
Refer to the AT S300 manual for complete installation
and operating instructions.
6.11 For models equipped with “Water Chiller”
option only: Connect a coolant water source, via a
shut-off valve and tubing to the 1/4" FPT coolant
water inlet on the rear of the cabinet. Connect a
water drain line to the coolant water drain.
7.0 PREPARATION AND START UP
CAUTION
Do not operate the dryer before implementing the
following water filling procedure!
7.1 Provide two gallons of clean tap water in a
plastic jug. The plastic jug will help to prevent
spilling when you pour the water, needed to prime
the dehydrator.
7.2 Make sure the Front Panel POWER switch (6)
is in the OFF position. Be sure that the compressor
breakers (10), located on the front panel are in the
up;”ON” position and that the manual operation
switch on the Alarm/ATS interface board is OFF.
Ve
rify that the power supply to the dehydrator is
on.
7.3 Check to assure that the petcock (42)
below the
Wa
ter Separator Tank is closed securely.
7.4 Remove the red fill plug from the passive air
intake and add water until the compressor intake
hoses are full of water. Install the fill plug and turn
ON the Power ON/OFF Switch. After the unit has
run for two seconds turn the unit OFF.
NOTE: on Model 33000ST 3 p hase units only, verify
that the water flows towards the compressor. If the
water flows towards the passive air intake, refer to
paragraph 7.7.
7.5 Repeat the fill procedure in Paragraph 7.4 at
least 2 or 3 more times. Note: that systems with the
optional water chiller will require more water.
7.6 Allow the unit to run with an adjusted system
pressure of 28 psig. See Section 8 for Display Set-
ting and Adjustments.
7.7 Model 33000ST Only: Electrical phase se-
quence dictates motor rotation in the Model 33000ST.
If the compressor did not accept water in 7.4 above,
TURN THE POWER OFF AT THE WALL FUSE
OR BREAKER BOX WHICH SUPPLIES THE
DEHYDRATOR. Exchange the red lead and the
black lead of the dehydrators power cable, where
they are connected either at the wall disconnect box
or in the male quick-connect electrical connector,
if that method of electrical hookup is used. After
replacing the cover of the electrical disconnect box
or the quick-connect securely, restore the power
supply. Return to paragraph 7.5 and perform the
procedure as instructed.
7.8 POST START-UP OBSERVAT IONS
Upon power up, the display will indicate the fol-
lowing sequences:
INITIALIZING (3 seconds); STANDBY (5 to
60 seconds depending on delay start-up setting);
STARTING (30 seconds, LED flashing yellow);
RUNNING DISARM (3 minutes, LED flashing
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