Restart
38 K-MT1-8_EN_08—2014
Restart
Depending on the fittings installed by the operator and the actual pressure
conditions, the unit might have to be restarted at operating pressure. The
following general rules apply:
When switched off, the dryer is open in main flow direction. With the optional
start-up device , the set minimum pressure must however be reached prior to
restart.
A return flow is only possible in connection with the optional regeneration gas
return (and provided that the pressure outlet valve is open).
If the dryer is equipped with a dewpoint-sensing control system, it is
depressurised gradually, according to the read measuring current.
If compressed air system and dryer have remained at operating pressure
► Ensure that the compressed air inlet valve (provided by the operator) is open.
► Set ON/OFF switch to I. The programme continues the cycle from the point
at which it was interrupted.
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
outlet valve must always be opened quite slowly!
► Slowly open the compressed air outlet valve installed by the owner. 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.
► If available, block off bypass line.
The dryer is now in operation again and operates fully automatically.
If compressed air system and dryer have not remained at operating pressure
► If disconnected, reconnect the voltage supply of the dryer.
► Ensure that the manual drain on the downstream filter is closed.
► Pressurise and switch on the dryer as described in the section Open
compressed air supply and switch on dryer on page 31.
The dryer is now in operation again and operates fully automatically.
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