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| User Manual
Maintenance and repair of the dryer
36
KE-MT 120-600
Regular maintenance intervals
Note:
If a chamber has been depressurised, e.g. after completion of the ex-pansion
phase, and the pressure remains above 0 bar, the chamber is pressurised by
what is known as ram pressure. This might be due to
◊ blockage at the muffl er(s)
◊ contamination of the perforated plates
◊ 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 following
pages describe some of these tasks. Maintenance work requiring the dryer to be largely dis-
assembled is not described. We recommend to have this work to be performed by authorised
specialists.
Component
Maintenance task to be carried out
Maintenance
interval
daily
12 months
48 months
See page
Complete dryer
Carry out visual checks and function checks.
•
38
Vessel pressure gauge
Check dam pressure. For a dam pressure ex-
ceeding 0.3 bar:
– Check muffl er.
– Check dust sieve.
– Check drying agent.
•
38
Control air fi lter
Replace fi lter element.
•
•
38
Muffl er
Replace muffl er after 1 year of operation and
after renewing the dessicant.
•
39
Dew point sensor (with
optional dew point sens-
ing-control)
Renew.
•
39
Pilot valves
Renew
•
41
Solenoid valve block
Renew
41
Dust sieves, gaskets,
drying agent*
Renew
41
Upstream and down-
stream fi lter
Please see the enclosed operating instructions for the attached
fi lters. Maintenance work has to be carried out as specifi ed in this
document.
