User guide

User Guide - Heatless Desiccant Air Dryer
10 17-100-0100
4.3 Dryer start-up
• Electrical connections.
o To set up for compressor eco mode. Remove the link between pins 1
and 4 in the Hirschman connector, located underneath the dryer. A
zero volt switching signal from the compressor needs to connect
between pins 1 and 4.
o When the connection is made, the dryer will operate normally. If the
connection is broken, i.e. the compressor has achieved maximum
operating pressure and has switched off; the dryer will also stop cycling
and go into standby mode, displaying “compressor off” on the display.
Under no circumstances should external voltage / current be applied to
pins 1 and 4, damage to the controller will occur, negating the warranty.
o The signal could also be from dryer specific point of use equipment.
o Pins 2&3 on the Hirschman connector provide a zero volt alarm output
for customer control panel indication. These pins are connected to a
relay within the controller which will close when the service or dew-
point conditions arise.
• Connect the IEC power supply underneath the dryer using the retaining clip to
secure in position.
Do not allow the dryer to flow air unless powered up, switched
on and cycling. Resulting effect could be cartridge
contamination; requiring replacement cartridges.
• Connect all pipe work.
o Ensure the inlet operating pressure parameters are between 4-12 barg.
o Ensure the inlet air temperature is between 1.5°C-50°C.
• Open the inlet and outlet valves.
• Turn on the dryer using the switch located underneath the front of dryer body.
• The dryer will display its status and commence normal operation. When the dryer
is powered up the display will show “initialising dryer” for approximately 20
seconds, ensuring the dryer is in equilibrium state before commencing operation.