Emergency shutdown
36
HDK350_EN_01_2005-05-10
During adsorption the pressure gauge should indicate the nominal operating
overpressure.
During regeneration the indication of the pressure gauge on the regenerating
vessel
—
should decrease in the expansion phase from operating overpressure to
0 bar overpressure,
—
indicate an overpressure of 0 bar in the dehumidification phase.
With an increasing duration of operation, a higher overpressure can be indicated
during regeneration. This overpressure during regeneration is also designated as
dam pressure.
The dam pressure should not exceed 0.3 bar, otherwise read the instructions
on page 48.
During the pressure build-up phase the indication on the pressure gauge
should again rise to operating overpressure level.
Pressure reducer with manometer
The pressure reducer is used to control the regeneration air. By default, it is set
to 8 bar. The manometer attached to the pressure reducer allows operators to
check the pressure settings.
Emergency shutdown
In the event of an emergency, shut down the dryer as described in chapter
Depressurising and shutting down the dryer,
page 43.
Start up dryer
Warning against sudden air ejection!
During expansion the pressure is released suddenly through the muffler:
A loud cracking noise occurs which can injure your hearing.
Particles carried in the air flow act like bullets and can injure your
eyes or skin.
Always wear eye and ear protection, therefore, when you are in the vicinity
of the dryer!
Hazard due to a sudden release of pressure!
Never remove any parts of the dryer, or manipulate the same in any way,
for as long as the plant is still pressurised! A sudden escape of pressure
may cause serious injuries.
Before carrying out any work on the dryer, first depressurise the plant.
The more powerful the dryer is, the more noise may be generated during
operation. Temporarily, the actual noise emission may even exceed
95 dB(A). Therefore, the operator must provide suitable protective equipment
(e. g. ear protection).
Summary of Contents for HDK 50/100
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