Maintenance work to be completed every 12 months
46
A190-930TX_EN_03_ 2009-02-06
Maintenance work to be completed every 12 months
Renew filter element of the control air filter
The control air filter is used to clean the control air and thus ensures that the
valve actuators are working properly. Contaminated or damaged control air filters
might lead to malfunctions in the valve actuators. The filter must therefore be
inspected at least once every year.
►
Depressurise dryer and take out of service (see page 39).
►
Remove the base of the filter housing.
►
Remove filter element by turning it.
►
Renew filter element and insert it.
►
Mount the base of the filter housing.
►
Dispose of spent filter element according to
the statutory regulations.
►
If no other maintenance work is required:
Restart dryer (see page 41). Check filter for
leaks.
Open control air filter
Renew mufflers
The dryer is equipped with a muffler. If the muffler becomes blocked, a dam
pressure is generated which in extreme cases may cause the muffler to burst.
Hazard caused by blocked muffler!
Blocked mufflers can cause a dangerous overpressure to build up which
may cause the mufflers to burst. Flying fragments may cause personal
injury and damage to property.
Therefore, the mufflers must be replaced every 12 months and after each
change of desiccant.
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!
Renew muffler
►
Depressurise the dryer and shut it down (see page 39).