Eppendorf LN2 Backup System - Manual (Page 31)

Technical data
New Brunswick LN2 Back-up System
English (EN)
31
Gas consumption was measured at the indicated temperatures, in the center of the cabinet and in an
ambient temperature of 23 ºC.
9.8 LN
2
Supplies
Consult your local gas supplier for suitable LN
2
supplies. A low-pressure liquid nitrogen storage Dewar (or
other suitable storage tank) with a liquid withdrawal port is required to properly utilize the cooling
properties of the liquid nitrogen. The liquid withdrawal port must have an adjustable valve with a pressure
gauge. The withdrawal pressure should be set to between 6 to 8 psig (0.44 to 0.55 bar).
9.9 Spare parts
Parts should only be replaced/installed by a qualified service engineer.
Consumption in kg/hr
(lbs/hr): at -60 °C at -70 °C at -80 °C
Upright freezers
(empty)
U725 Innova 2.62 (5.76) 2.75 (6.05) 3.0 (6.6)
U535 Innova 2.05 (4.51) 2.16 (4.74) 2.11 (4.63)
U101 Innova 1.13 (2.49) 1.38 (3.03) 1.79 (3.93)
U410 Premium 2.0 (4.4) 2.2 (4.84) 2.6 (5.72)
U570 Premium 2.25 (4.95) 2.7 (5.94) 3.3 (7.26)
Chest freezers (empty)
C760 Innova 2.85 (6.3) 3.0 (6.6) 3.2 (7.0)
C585 Innova 2.6 (5.72) 2.85 (6.3) 3.1 (6.82)
C660 Premium 2.67 (5.86) 2.83 (6.22) 3.03 (6.63)
C340 Premium 1.99 (4.37) 2.07 (4.58) 1.84 (4.04)
Description Part Number
LN
2
Control Unit P0625-0570
Power Supply, 18 V, 45 - Watt P0625-0500
Battery 12 V 7 Ah - Control unit K0480-0020
Fuse 20 mm 2 A - Control K0380-0610
PT100 Temperature Sensor Assembly P0625-1410
Magnetic Door Switch Sensor Assembly P0625-1420
Door Switch Magnet K0400-0631
Magnetic Door Switch Adaptor Plates, Innova and
Premium U700 only P0625-0320