Heidolph RotaChill - Manual (Page 28)

110-509 HD/EN 27
Condenser, Air Vents, and Reusable Filter
(Refrigerated Models only)
To keep the refrigeration system operating at optimum cooling
capacity, the condenser, removable air filter, and all air vents
(front, side, back) should be kept free of dust and dirt. Be sure to
check them on a regular basis and clean as required.
The reusable filter is easily accessed from the front of the unit by
simply removing the access panel. Use a mild detergent and
water solution to wash off any accumulated dust and dirt. Rinse
and dry thoroughly before reinstalling.
Reusable
Filter