Start-up
A190-930TX_EN_03_ 2009-02-06 35
Open compressed air supply and switch on dryer
For start-up, please proceed in the sequence shown here.
► Ensure that the compressed air inlet and outlet valves installed by the owner
are closed (see installation example on page 27).
► Ensure that the compressed air system upstream of the dryer is pressurised.
If necessary, pressurise (switch on compressor).
Slowly open compressed air inlet valve!
Avoid sudden pressure build-up in any circumstance! If pressure builds
up too fast, this may cause damage to the dryer. Therefore, the
compressed air inlet valve must always be opened quite slowly!
► Slowly open the compressed air inlet valve, installed by the owner, upstream
of the dryer.
► Switch on dryer: to this end, set the ON/OFF
switch to I.
ON/OFF switch
If the dryer is taken into operation for the first time, or after a change of drying
agent, the following intermediate step is meaningful. In the case of a restart
situation, the following intermediate step can be skipped.
Operating the dryer for the first time (or after a change of drying agent) separately
Depending on the transportation and storage conditions, the drying agent in the
vessels can already be loaded with humidity from the environment. At each first
start-up it makes sense therefore to operate the dryer from some time separately
from the compressed air system. This causes the drying agent in each vessel to
be regenerated repeatedly and thus to be prepared optimally for the take-up of
humidity.
Note:
Depending on the pressure dew point to be achieved, we recommend
to operate the dryer at first start-up without compressed air
consumption:
for at least 4 hours at a pressure dew point of –25 to –40 °C or
for approx. 3 to 5 days at a pressure dew point of –70 °C.
If you wish to take the dryer into operation in accordance with our
recommendation, proceed as follows:
► Ensure that the compressed air outlet valve installed by the owner is closed.
► Keep the compressed air outlet valve closed for the time period
recommended above.
Then the dryer can be taken into service in the compressed air system as
described in the following section:
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