HDK-MT350_EN_06
37
Maintenance and repair of the dryer
In order to allow maintenance work on the dryer to be carried out efficiently and
without danger for maintenance personnel, you should comply with the following
instructions.
Notes on maintenance
Attention!
All maintenance work must be completed by authorised and qualified
specialist personnel trained by the manufacturer or his distributor.
Danger!
There is a very considerable risk of personal injury, when carrying out
work on the activated and pressurised dryer.
Before commencing any maintenance tasks always shut down the dryer
as described on page 35, Trockner drucklos machen und außer Betrieb
nehmen!
Warning - injury hazard posed by backpressure!
When relieving pressure, swollen seals can cause backpressure. The
outflow of compressed air can cause injuries.
Only slacken off screw connections and loosen components with great
care and slowly.
Allow the system to decompress over night (several hours) before
carrying out maintenance work.
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!
Note:
For an inspection of the pressure vessels, the desiccant must be
removed.
Check the dryer regularly for externally visible damage and defects. Any
changes, even in its operating behaviour, must be reported immediately to
the competent office or person.
Bolt connections must be undone with care! Note ram pressure values!
Otherwise emerging media may cause personal injury.
Following maintenance work, always check all flange and bolt connections for
leakage and secure seating.
