vwr.com I Instruction manual VWR
®
ULT Freezer 352/528 Eco Premium 02/2022
Page 17/86
2.5 Residual Risks
The unavoidable design features of a chamber, as well as its proper field of application, can also pose risks,
even during correct operation. These residual risks include hazards which, despite the inherently safe de-
sign, existing technical protective equipment, safety precautions and supplementary protective measures,
cannot be ruled out.
Messages on the chamber and in the Operating Manual warn of residual risks. The consequences of these
residual risks and the measures required to prevent them are listed in the Operating Manual. Moreover, the
operator must take measures to minimize hazards from unavoidable residual risks. This includes, in partic-
ular, issuing operating instructions.
The following list summarizes the hazards against which this Operating Manual and the Service Manual
warn, and specifies protective measures at the appropriate spots:
Unpacking, Transport, Installation
•
Sliding or tilting the chamber
•
Setup of the chamber in unauthorized areas
•
Installation of a damaged chamber
•
Installation of a chamber with damaged power cord
•
Inappropriate site of installation
•
Missing protective conductor connection
Normal operation
•
Assembly errors
•
Contact with cold surfaces on the housing and on the doors
•
Emission of non-ionizing radiation from electrical operating resources
•
Contact with live parts in normal state
Cleaning and Decontamination
•
Penetration of water into the chamber
•
Inappropriate cleaning and decontamination agents
•
Enclosure of persons in the interior
Malfunction and Damage
•
Continued operation of the chamber during an obvious malfunction or outage of the cooling system
•
Contact with live parts during error status
Operation of a unit with damaged power cord
Maintenance
•
Maintenance work on live parts.
•
Execution of maintenance work by untrained/insufficiently qualified personnel
•
Electrical safety analysis during annual maintenance not performed
Trouble-shooting and Repairs
•
Non-observance of warning messages in the Service Manual
•
Trouble-shooting of live parts without specified safety measures
•
Absence of a plausibility check to rule out erroneous inscription of electrical components
•
Performance of repair work by untrained/insufficiently qualified personnel
•
Inappropriate repairs which do not meet the quality standard specified by VWR