Parker Zander WVM 40, Operating Manual

Page: 45 / 56

EN | Operating manual Maintenance and repair of the dryer
WVM 40 -1450 45
Depressurise dryer and take out of service
(see page 37).
Unscrew fl ange and screw connections
from the upper arch pipe system (see fi gure).
Withdraw upper arch pipe complete with all
mountings.
Remove desiccant sieves and gaskets.
Clean desiccant sieves with compressed
air or a suitable tool (e.g. soft wire brush).
Disassembling of desiccant sieve
Renew gaskets.
Mount cleaned desiccant sieves:
— mount base gasket;
— insert desiccant sieve;
— mount top gasket.
Repeat the process on the second vessel.
Re-mount and secure the upper arch pipe system.
If no other maintenance work is required: Restart dryer (see page 38). Check that the
connection is leak tight.
Renew desiccant
Generally desiccant has a service life up 3 to 5 years. Under favourable conditions, the
desiccant might not have to be replaced at that stage and can be used for longer period
(see also page 21). However, the service life depends greatly on the contamination of the
compressed air (or the effectiveness of the preliminary compressed air fi lter respectively) and
the contamination of the ambient air at the site. Oil, dust and dirt particles tend to deposit on
the desiccant and thus reduce the effective adsorption surface. This damage is not always
reversible. If in doubt, have your desiccant assessed by our specialists.
Please observe the following safety instructions when replacing the desiccant:
Wear eye protection and a dust mask because of increased dust formation!
Emptying the desiccant may lead to increased dust formation.
Wear goggles to avoid eye irritations!
Wear a dust mask to avoid inhaling the dust!
Risk of slipping!
Spilt desiccant beads lead to a risk of injury from slipping! Immediately remove
any spilt desiccant.