Shutdown and restart dryer
HDK-MT350_EN_04
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Shutdown and restart dryer
In the following cases, the dryer must be fully shut down and depressurised:
In the event of an emergency or malfunction
For maintenance work
For dismantling
Risk of injury from escaping compressed air!
Never remove any parts of the dryer, or manipulate the same in any way,
as long as the unit is pressurised! Suddenly escaping compressed air
might cause serious injuries. Prior to any work, release all pressure from
the unit.
Note:
If the unit is equipped with a compressor synchronisation system,
first switch off the compressor and then wait until the dryer has
reached the standby phase before switching it off with the ON/OFF
switch. This ensures that the regeneration cycle is completed, and
that the pressure in both vessels is at the same level.
As soon as the dryer is switched on again, the programme continues
the cycle from the point at which it has been stopped.
Emergency shutdown
In any emergency proceed as described in the next section.
Depressurising and shutting down the dryer
In order to make the dryer safe, follow the instructions in the next three sections:
Disconnect dryer from compressed air system
► Close the compressed air outlet valve (provided by operator).
► Close the compressed air inlet valve (provided by operator).
Depressurise dryer
► Leave the dryer on until the expansion phase in both vessels has been
completed.
During the expansion phase, the vessels are completely depressurised.
► Check the pressure in the dryer at both vessel pressure gauges. The
pressure gauges should show value "0".
Disconnect voltage supply
► Switch off the dryer by setting the ON/OFF
switch to position
0
.
ON/OFF switch
