Lauda DLK 10, Operating Instructions Manual, Page: 22 / 32

Through flow coolers
20
Maintenance
16/03/2018 / YAFE0004
9 Maintenance
Before repair or cleaning is done, pull out the mains plug!
Repair at the control panel and the lower part of the unit should only be executed by a qualified
electrician.
The refrigeration unit operates largely without maintenance. If the units operate under dusty
conditions we recommend that the refrigerator condenser is cleaned quite often. This is done best
with compressed air or nitrogen that is blown into the ventilation openings for a few minutes. If
necessary unscrew the front ventilation grill.
The refrigeration circuit of the DLK 10 is charged with R-134a, the refrigeration circuit of DLK 25,
DLK 45 and DLK 45 LiBus is filled with R-404A.
Repair and disposal must be executed by a qualified refrigeration engineer.
9.1 Cleaning
Clean the units with a cloth, wetted with water and some drops of tensids (washing-up liquid). No
water must enter the control panel.
The user is responsible for any necessary decontamination if dangerous materials have been spilled
on or inside the unit. This applies in particular if the unit is removed for a different use, for repair,
storage etc.
The method of cleaning or decontamination is determined by the expertise of the user himself. If the
user has any doubts on whether this may damage the unit he can contact the manufacturer.