iDRY Series Heatless Regenerated Dryers: IOM10003-C
(Rev. A)
13
5.2
Start-up Procedures
During the first start-up or start-up after a long period of inactivity or following maintenance, the technician
must comply with the instructions below. The start-up must be performed by qualified personnel only.
The employee that operates the machine must wear hearing and eye protection before operating the dryer.
Each employee must select a proper personal protection device (PPD) hearing protector such as earmuffs,
ear canal caps or earplugs in order to prevent permanent hearing damage or loss.
Start-up Sequence
Please read and understand the entire manual before operating the dryer
Verify the factory settings
Verify the wiring diagrams that pertain to your unit and ensure the correct power supply is connected
Do not energize the circuit at this time
Verify that proper short circuit protection has been provided following all applicable codes and regulations
Verify that all the steps of in the previous chapters relating to installation have been observed
Verify that the connection to the compressed air system is correct
Verify that the condensate drain pipe is properly fastened and connected to a collection system or container
Remove any packaging and other material that might obstruct the area around the dryer
Before starting the dryer your compressor should be running, your compressed air system pressurized and the dryer
bypassed and not yet pressurized.
1.
With the dryer bypassed and in isolation (see page 14)
2.
SLOWLY
open the inlet isolation valve allowing compressed air into the dryer. It is critical that the dryer
be pressurized slowly to prevent fluidization of the desiccant bed. Keep the outlet isolation valve closed
at this time.
3.
SLOWLY
open the outlet isolation valve. All valves are now in their open positions and compressed air is
flowing through both towers and downstream.
4.
Close the dryer bypass valve. The bypass valve must be bubble tight to prevent any moisture from
contaminating the dry air outlet from the dryer.
5.
Plug in the dryer and energize the electrical circuit – the dryer is now ON.
6.
Verify that the controller is on.
7.
Check all piping for compressed air leaks.
8.
Test the condensate drain on the pre-filter.
9.
After 1-minutes from start-up the adsorption tower B will be depressurized.
10.
Wait for the dryer to make 10 full cycles (i.e. the depressurization from tower A to tower B).
11.
The dryer will make the first 5 cycles short cycles, running at 50% run time without regard for dew point.
12.
The pressure swing cycles occurs, every 5 minutes (outlet dew point of -40°F).
NOTE: During the first days in operation, the dew point cannot be guaranteed because the adsorption material can
contain humidity from storage. At the first start-up or start-up after a long inactivity period or following maintenance
shutdowns, we recommend operating the dryer at a reduced nominal flow of 50% during the first two days.
