Eppendorf LN2 Backup System - Manual (Page 25)

Maintenance
New Brunswick LN2 Back-up System
English (EN)
25
8 Maintenance
8.1 Cleaning
8.1.1 Cleaning the device
 Clean the accessories and all accessible surfaces of the device once a month or if they have become
significantly dirty.
 Use a mild cleaning agent and a damp cloth.
8.1.2 Cleaning the surrounding area
 Keep the air around the device dust-free.
 Clean the area around the device on a regular basis.
8.2 LN
2
supplies
We recommend that a record sheet be placed on or near the freezer, and that a routine check of the liquid
nitrogen remaining in the Dewar be allocated to a staff member. Record the measurements on the record
sheet. All gas supplies can leak away with time. The majority of LN
2
backup system failures are not
equipment failures; they are rather due to empty Dewars, resulting from lack of routine checks.
CAUTION!
 Maintenance, service and repair work should be carried out only by qualified personnel
who have been authorized by Eppendorf.
 Failure to use authorized service agents may invalidate the warranty.
DANGER! Electric shock
 Switch the device off and pull the power plug out of the socket before beginning work.
NOTICE! Damage due to incorrect cleaning agent or sharp objects
Unsuitable cleaning agents can damage the display, surfaces and printing.
 Never use corrosive cleaning agents, strong solvents or abrasive polishes.
 Do not use acetone to clean the device.
 Do not use sharp objects to clean the device.