EN
| User Manual
Shutdown and restart dryer
K-MT 1-8/D3
31
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
Caution!
Risk of damage to the dryer, if it is switched off during the expansion or drying
phase.
During these phases, the pressure in the regenerating chamber is released
to ambient pressure: If the main valve is opened, as the dryer is switched off,
there is a sudden pressure build-up in the chamber. This might result in
◊ damage to the drying agent, and
◊ excessive abrasion, with negative impact on the regeneration capacity.
Before switching off the dryer, wait until it has reached the pressure build-up
phase or is in standby mode (before switchover).
Note:
If the unit is equipped with a compressor synchronisation system, fi rst 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 chambers 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
To emergency shut-down the dryer heed to the following instructions:
Close shut off valves upstream and downstream of the dryer (if applicable)
Disconnect the electrical power supply (i.e. by switching the On/Off switch to
0
).
◊
The dryer is now off-line.
If applicable, depressurise the dryer now.
Before re-commissioning of the dryer ensure that the emergency situation has been solved
and that the dryer is not damaged.
Never commission a damaged dryer!
Depressurising and shutting down the dryer
Close compressed air feed line
Close the compressed air inlet valve (provided by the operator).
Disconnect voltage supply
Switch off the dryer by setting the ON/OFF switch to position
0
.
Disconnect dryer from compressed air system
Close the compressed air outlet valve installed by the owner.
If available, open bypass line.
Depressurise dryer
Depressurise dryer, e.g. by opening the manual drain at the downstream fi lter.
