ZANDER HDK 140/100, Operating Instructions Manual

Page: 38 / 72

Start up dryer
38 HDK350_EN_01_2005-05-10
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:
Operate dryer immediately in the compressed air system
► Ensure that the compressed air system downstream of the dryer is
pressurised or that a start-up device (option, see page 20) was installed into
the compressed air system directly downstream of the dryer.
The importance of this increases with the size of the compressed air system
downstream of the dryer. Smaller compressed air systems can be
pressurised also by means of compressed air fed through the dryer.
Slowly open compressed air outlet valve!
Avoid a sudden drop in pressure in any circumstance! If pressure drops
too fast, this may cause damage to the dryer. Therefore, the compressed
air outlet valve must always be opened quite slowly!
► Slowly open the compressed air outlet valve installed by the owner. Observe
the vessel pressure gauge of the pressurised vessel. The pressure should
not drop below the operating pressure (if poss.). If necessary, keep the
compressed air outlet valve in a slightly open position until the compressed
air system downstream of the dryer has filled up completely; only then should
the valve be opened fully.
The dryer has then be taken into operation within the compressed air system.
In the event of a fault
In the event of an emergency or if a safety-relevant disruption occurs (e.g.
escaping compressed air, defective component), the dryer must be shut down
immediately as described in the section
Depressurising and shutting down the
dryer on page 43) .
Then proceed as follows:
Remedy fault
► Look up possible cause of the fault, and how to remedy the same, in the
table on page 56.
► Remedy fault.