Parker Zander HDK-MT 10-100, Руководство по эксплуатации

Страница: 32 / 55

Changing cycle mode (optional)
32 HDK-MT350_EN_04
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 16) 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 on page 35)
.
Then proceed as follows:
Remedy fault
► Look up possible cause of the fault, and how to remedy the same, in the
table on page 42.
► Remedy fault.
► Repeat the start-up procedure.
Changing cycle mode (optional)
When can I change cycle mode?
If the dryer has been successfully commissioned and is equipped with one of the
following options:

compressor synchronisation or

dewpoint-sensing control
it can be set to
economy cycle
mode.
When should I change cycle mode?
Cycle changes should be made during the pressure build-up phase and prior to
switchover; during this phase, the pressure in both vessels is just below operating
pressure so that a fast pressure build-up is prevented when the vessels are
switched. During this period, only the adsorption LED is on in the diagram, and
the digital display shows step 4 or step 9 for the duration of 1 minute (see logic
control diagram; not displayed with dewpoint sensing).