vwr.com I Instruction manual VWR
®
ULT Freezer 352/528 Eco Premium 02/2022
Page 73/86
DANGER
Electrical hazard during live maintenance work.
Deadly electric shock.
∅
The chamber must NOT become wet during operation or maintenance works.
∅
Do NOT remove the rear panel of the chamber and the maintenance flaps on the
chamber sides.
Before conducting maintenance work, turn off the chamber at the main power switch
and disconnect the power plug.
General maintenance work must be conducted by licensed electricians or experts au-
thorized by VWR.
Maintenance work at the refrigeration system must only be conducted by qualified per-
sonnel who underwent training in accordance with EN 13313:2010 (e.g. a refrigeration
technician with certified expert knowledge acc. to regulation 303/2008/EC).
Follow the national statutory regulations.
Ensure regular maintenance work is performed at least once a year and that the legal requirements are
met regarding the qualifications of service personnel, scope of testing and documentation. All work on the
refrigeration system (repairs, inspections) must be documented.
The warranty becomes void if maintenance work is conducted by non-authorized personnel.
With an increased amount of dust in the ambient air, clean the condenser fan (by suction or blowing) several
times a year. Check the condenser air filter frequently and clean / replace it if necessary (chap. 23.3.1).
We recommend taking out a maintenance agreement. Please consult Avantor Services.
23.3 Maintenance work by the user
23.3.1 Checking and cleaning / replacing the condenser air filter
The condenser air filter prevents accumulation of dust on the condenser. If the filter is blocked by dust this
may cause decrease or failure of refrigeration.
Check the air filter visually for soiling every month. Especially with the alarm message “Condenser temp.”
(chap. 15.1) the filter may be soiled. You can rinse the filter and use it again.
Regularly check the filter visually for soiling.
The filter is located behind the air filter flap (E) in the lower housing cover. You can easily take it out for
cleaning or replacement.
•
Unscrew the quick locking screws (E2) of the air filter flap (E) and remove the air filter flap
•
Remove the condenser air filter (E1).
•
Wash the condenser air filter with water and let it dry. If necessary, replace the filter.
•
Insert the condenser air filter and mount the air filter flap. Mount the quick locking screws.
Replacement condenser air filter
EU Cat. no.
NA Part no.
471-1261
76521-268