8.8 ADJUSTING THE SYSTEM PRESSURE
8.8.1 The System Pressure Regulator (28) is located
on the horizontal frame member. Before adjusting, wait
until the front LCD displays the SYSTEM pressure
and LINE pressure together, then immediately press
the HOLD key to freeze the display.
8.8.2 Pull back on the System Pressure Regulator knob
and slowly turn clockwise to raise or counterclockwise
to lower the system pressure as viewed on the display.
8.8.3 Press the knob inward to lock setting. NOTE:
The normal operating system pressure for the
SmartTech
™
series is a minimum of 28 psig. A slightly
higher or lower setting will not effect the operation.
Fluctuation in the system pressure will occur and are
normal especially during the dwell cycle of the drying
system. Make any nal adjustments when the Air
Dryer has come up to normal operating temperatures.
Under a cold start after a dryer has been on standby,
the system pressure could be 2 to 3 psi higher. DO
NOT readjust as the pressure and ow will settle
downward as the unit gets up to temperature. For
higher altitudes, the operating system pressure can
be lower to compensate for pressure and air density.
As a guide line, for every 1000 feet elevation above
sea level, a 1/2 psi reduction is recommended. This
adjustment will help compensate for some of the lost
output capacity due to elevation.
8.9 ADJUSTING THE LINE PRESSURE
8.9.1 The Line Pressure Regulator (29) is located on
the horizontal frame member. Before adjusting, wait
until the front LCD displays the System Pressure and
Line Pressure together then immediately press the
HOLD key to freeze the display.
8.9.2 Back off the lock nut on the Line Pressure
Regulator and slowly turn clockwise to raise or
counterclockwise to lower the line pressure as viewed
on the display.
8.9.3 Tighten the lock nut to lock the setting. NOTE:
for setting or verifying the High and Low alarms see
paragraph 8.3 and 8.4.
9.0 SCHEDULED MAINTENANCE
NOTE: A 12-month scheduled maintenance kit, part
number 100495 contains only the lters needed for
each full year of operation. A 24 month scheduled
maintenance kit, part number 100496 contains
solenoid valve kits and the lters needed after two
years of operation. To view the run hours of the Air
Dryer press MENU and arrow down to VIEW RUN
HOURS and press OK.
9.1 Each Six Months or 4000 hr.
9.1.1 Change Intake Filter (P/N 36565)
9.1.2 Change Cabinet Filter (P/N 0040151001)
9.1.3 Change Water Filter (P/N 46222)
9.2 Each Twelve Months or 8000 hr.
9.2.1 Perform 9.1
9.3 Each Twenty Four Months or 16000 hr.
9.3.1 Perform 9.1
9.3.2 Replace Water Ejector Solenoid Valve
(P/N 36785)
9.3.3
Install Two Purge Valve Kits (P/N 0024815016)
10.0 ROUTINE SERVICE CHECKS
NOTE: It is recommended to place the Dryer in
Manual Operation while doing routine maintenance,
especially if connected to an ATS System. These
operational checks can be performed on routine site
inspections.
10.1 Check System Pressure: Verify that the system
pressure is not below 28 psig.
10.2 Verify that the Line Pressure is set according to
local practice.
10.3 Verify purge cycle each thirty seconds.
10.4 Visually check condition of water lter (40),
inlet lter (31) and cabinet lter (46) for reasonable
cleanliness.
10.5 Flush the water system by pressing the manual
water drain switch. Depress the switch until the unit
shuts down on low water shutdown. This veries that
the low water shutdown switch and the water eject
valve are working properly. Turn off the dehydrator
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