4
START-UP/OPERATION
Never use the disconnect switch to shut down the dryer
for an extended period of time (except for repair). Failure
to follow these instructions may result in a non-warrant-
able compressor failure.
IMPORTANT: For models FLX 1.5 through FLX 5.5, energize
dryer for 24 hours prior to starting refrigerator compres-
sor! Failure to follow these instructions may result in a
non-warrantable compressor failure.
Follow the procedure below to start your dryer. Failure to follow
the prescribed start-up procedure will invalidate the warranty.
If problems arise during start-up, call your distributor. Before
repair, vent the internal pressure of the dryer to atmospheric
pressure.
Before starting dryer
Drain connections must be made before the dryer can be op-
erated. The dryers are fully automatic and require no auxiliary
controls.
1. Turn the dryer on/off switch to off.
2. Check that the main electrical supply voltage matches the
voltage specified on the dryer data plate.
3. Check proper connection and support of compressed air
lines to the dryer; check bypass valve system, if installed.
4. SLOWLY pressurize the dryer. The outlet valves of the dryer
should be closed to prevent flow through the dryer.
5. Turn on the main electrical power to the dryer.
6. Ensure adequate ventilation for air cooled dryers.
7. Do not operate the dryer with any dryer cabinet panel
removed.
Cooling air flow across the condenser may be reduced
if a dryer panel has been removed while the dryer
is operating, resulting in the dryer not functioning
properly and/or dryer failure. Failure to follow these
instructions may result in a non-warrantable dryer
failure.
To start dryer
IMPORTANT: For models FLX 1.5 through FLX 5.5, energize
dryer for 24 hours prior to starting refrigerator compres-
sor! Failure to follow these instructions may result in a
non-warrantable compressor failure.
1. Turn the power switch to ON. The refrigerant compressor
will turn on.
2. Allow the dryer to run 15 minutes. Confirm that the tem-
perature indicators are in the green zone.
3. SLOWLY open the dryer outlet valves permitting flow
through the dryer.
4. Confirm that condensate is discharging from the drain valve
by pressing the “Push-to Test” button.
5. Confirm that the inlet air temperature, pressure and airflow
to the dryer meet the specified requirements (see Engi-
neering Data section).
2. Level 2 Controller
(i)
Save the operating data
a. Refrigerant compressor on/off status, Alarm, Dew
point level, Inlet air temperature
b. Memory chip can save maximum 30 days
c. When there is no space to save, then erase the first
one
(ii) MICRO-USB connection port
a. Automatically download operating data
b. Automatically upgrade firmware program
(iii) Communication port
a. RS485: Modbus monitoring
Operation
1. The Controller indicates the energy saving %, dryer’s oper-
ating time, refrigeration compressor’s operating time and
dew point level.
2. To start the FLX dryer, turn on the (a) dryer on/off switch.
3. When the refrigeration compressor and the condenser fan
are running, the cold refrigerant in the chiller (evaporator)
cools the liquid Phase Change Material (PCM) which gradu-
ally solidifies. During this time, the refrigeration compressor
running light (c) is illuminated on the LCD window.
4. Energy saving percent (e) is displayed on the LCD window
by calculating dryer running time and refrigeration com-
pressor operating time.
5. Pressure dew point level (f) is displayed on the LCD window.
6. Dryer running time (h) is displayed on the LCD window,
when the power on or dryer running time select button (g)
is pressed, then refrigerating compressor running time is
displayed. When the (j) button is pressed over 10 seconds,
dryer running time is erased and displayed “0 H”. (timer
reset)
7. Check the dryer operating status when the alarm light (b)
blinks according to Table 1 below.
No. Alarm display
Description
1
lamp (b) blinks rapidly
and “E01” is displayed
on (h)
Ref. compressor has
no signal
2
lamp (b) blinks and
“E02” is displayed on
(h)
Temperature sensor
signal open
3
lamp (b) light is on
“E03” is displayed on
(h)
Drain valve has some
trouble
Table 1. Alarm display mode
Summary of Contents for SPX Flow FLEX Series
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