4
INSTRUMENTATION
ON/OFF Switch
The dryer is equipped with an ON/OFF switch on the front
panel. A light signals when the dryer is on.
CONDENSATE DRAIN VALVES
(10 scfm model)
A float operated drain is housed in a
metal bowl. It will automatically drain the condensate.
(15 scfm model)
An electronic drain valve is supplied to
automatically discharge condensate from the dryer. The drain
valve and its controls are accessible from the right side of the
dryer. The electronic drain valve has two indicators and a test
button to help verify operation. Pushing the test button
causes the drain port to click open. If either indicator fails to
turn on at the proper time, refer to the maintenance section
of this manual. Drain valve operation is controlled by an
electronic timer. The drain opening can be set from 0.5 sec to
10 sec. The drain cycle can be set from 0.5 min to 45 min.
Electronic Drain Valve Adjustment
To minimize air losses, the drain valve timer should be
adjusted to open the drain port just long enough to
discharge accumulated condensate. Set the timer so that
only air discharges at the end of the open period.
Recommended initial settings are a 1 to 2-second drain
opening and a 30-second drain closed time (cycle).
Recommended Drain Settings
START-UP/OPERATION
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.
Refer to Serial Number Tag for dryer
operating capacity. Do not exceed recommended
capacity
Drain connections must be made before the dryer can be
operated. The dryers are fully automatic and require no
auxiliary controls.
1.
Connect inlet and outlet lines to the dryer. Reference
dryer indentations and instruction tag for appropriate
inlet and outlet connections.
2.
Route drain connections to a condensate separator or
approved collection point.
3.
Turn the on/off switch to on. Double check connections.
4.
After the dryer has been running for 30 minutes:
a.
Check that on/off lighted switch is glowing. If light
is not glowing, unplug unit and refer to Field
Service Guide for additional information or call your
local distributor.
b.
Confirm that condensate is discharging from the
drain. This can only be done when there is air flow
through the dryer.
Reference Serial Number Tag for
appropriate power requirement/connection rating.
Make other dryer connections prior to connecting
power source.
The dryer is designed to run continuously. Let the dryer run
even when the demand for compressed air is interrupted;
the dryer will not freeze up,
Operating Check Points
1.
Power light is on, light is illuminated
2.
Condensate is discharging properly
SHUTDOWN
When the dryer must be shutdown for maintenance or
other reasons, use the following procedure.
1.
Turn the power on/off switch to off.
2.
Disconnect the main power supply.
If mechanical repairs are to be made or service is performed,
vent the internal pressure of the dryer to atmospheric
pressure. Restart the dryer according to the start-up
instructions.
Disconnect power supply and depressurize
dryer before servicing. Dismantling or working on any
component of the compressed air system under pressure
may cause equipment failure and serious personal injury.
E
N
G
L
I
S
H
Time
Model SCFM
Open (sec.)
Closed (Min.)
15
2
15
NOTE: If liquid discharges as the port is closing, set the timer for a shorter cycle
or a longer opening.
