Product Manual

Page 21
5.4 NORMAL OPERATION
Following the start-up procedure the
operation of the dryer is fully automatic
and requires no further attention until
shut down.
The green ‘power on’ LED and the green ‘correct
operation’ LED should be illuminated
continuously.
The dryer contains two desiccant chambers,
while one chamber is drying the compressed air
(adsorption), The other chamber is
simultaneously undergoing regeneration (de-
sorption). At a predetermined time both exhaust
valves close and repressurisation begins. Every
two and a half minutes the chambers are reversed
in function, this is the changeover point.
Changeover is characterised by an
immediate venting of compressed
air from the chamber entering
regeneration.
The dryer can be shut down at any point in its
cycle and when restarted will enter an
automatic repressurisation stage. After
repressurisation the cycle will commence at the
point at which it stopped.If power is
switched on, the dryer will enter an
automatic repressurisation stage at
the point at which it stopped.
5.5 SHUT-DOWN PROCE-
DURE TO DEPRESSURIZE THE
DRYER
Prior to isolating the electrical supply
close the outlet valve while
simultaneously opening the by-pass
valve if fitted. Close the inlet valve.
The dryer will now be isolated from supply
pressure. Cycle the dryer for a minimum of 5
minutes to ensure the dryer vents and is
completely depressurized. When the dryer is
completely depressurized, isolate the electrical
supply.
The by-pass valve should only be opened if the
dryer is undergoing maintenance.
5.6 ALARM SIGNAL
It is possible to get an alarm signal
and control the dryer by a remote
control. In order to get the alarm
and/or remote control the
connector under the dryer is to be
used. Refer to the wiring diagram
for wiring details.
STARTUP AND OPERATION
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