ZANDER HDK 140/100, Operating Instructions Manual

Page: 46 / 72

Regular maintenance intervals
46 HDK350_EN_01_2005-05-10
Regular maintenance intervals
Note:
If a vessel has been depressurised, e.g. after completion of the
expansion phase, and the pressure remains above 0 bar, the vessel is
pressurised by what is known as ram pressure. This might be due to
„ blockage at the muffler(s),
„ contamination of the dust sieves,
„ spent drying agent.
To prevent such malfunctions, regularly service the dryer as described
below.
The table provides an overview of the maintenance work to be carried out. The
individual tasks are described in the following pages.
Maintenance interval
Component Maintenance task to be carried out
daily weekly 12 months 24 months 48 months see page
Complete dryer Carry out visual and function checks. ▲ 47
Vessel pressure gauge Check dam pressure. For a dam pressure
exceeding 0.3 bar:
– Check muffler.
– Check dust sieve.
– Check drying agent.
▲ 48
Upstream and
downstream filters Check differential pressure on the upstream
and downstream filters.
▲ 48
Pressure reducer Check pressure settings; adjust , if necessary.
▲ 52
Upstream and
downstream filters Replace all filter elements.
z
48
Muffler Renew.
z
49
Dew point sensor (with
optional dew point
sensing-control Must be calibrated.
z 50
Check valves Clean, replace, if necessary.
z
51
Dust sieves, drying agent Renew.
z
52
Codes: ▲ Check. z Renew.
When carrying out any maintenance work, comply with the following safety
instructions: