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| User Manual
Shutdown and restart dryer
BSP-MT 1-8/D3
31
If available, open bypass line.
Depressurise dryer
Depressurise dryer, e.g. by opening the manual drain at the downstream fi lter.
If work is to be carried out on the electrical system
Depressurise and shut down the dryer, following the instructions in the above chapter.
Risk of injury due to voltage-carrying parts!
The electrical supply cable and external power lines are live even after the
dryer is switched off and, in the event of body contact, may cause serious
injury! Before carrying out any work on the electrical system, the electrical
supply cable and all external power lines must be made voltage-free!
Make the electrical supply cable to the dryer voltage-free.
Secure the electrical supply cable to the dryer against switch-on.
Restart
Depending on the fi ttings 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 fl ow direction. With the optional start-up de-
vice , the set minimum pressure must however be reached prior to restart.
◊
A return fl ow 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 gradu-
ally, 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 compressed air 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
fi lled up completely; only then should the valve be opened fully.
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 fi lter is closed.
Pressurise and switch on the dryer as described in the section Open compressed air
supply and switch on dryer on page 25.
The dryer is now in operation again and operates fully automatically.
