Eppendorf New Brunswick -86 °C Freezers G - Manual (Page 13)

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HEF® and G -86 °C Freezers — Operating manual
4 Installation
4 Installation
4.1 Preparing installation
4.2 Selecting the location
All freezers are mounted on castors for ease of movement. U725-G model freezers have feet that
provide both a leveling feature and a locking feature to stop the freezer from rolling once it is in
place. HEF upright freezers and chest freezers have locking front castors; locking front castors
do not provide leveling adjustment, so the site chosen for the freezer must have a flat, level floor.
Position the freezer to allow disconnection to be made in respect to removal of the plug or
appliance coupler, also the free air entry through the intake grille in the front and free air exit from
the back. Provide a clearance of at least 150 mm (6 in) on all sides.
For efficient temperature control, the freezer should be placed in a shaded area, away from
sources of excessive heat. For maximum cooling capability, the product should be located in an
air-conditioned room.
4.2.1 Occupancy rating (230 V, 50 Hz models only)
This equipment has a category A1 - B1 occupancy rating, with a refrigerant charge of less than
0.15 kg per sealed system.
Systems charged with less than 0.15 kg may be installed in any size room as long as adequate
ventilation is provided, in order to remove rejected heat from the freezer and to vent any sudden
loss of refrigerant in case of system failure.
4.2.2 Below ground installations (230 V, 50 Hz models only)
We recommend allowing at least 18 m 3 (23.5 yd 3 ) room volume for each freezer, to keep the air/
refrigerant concentration from exceeding 20 % of the Lower Flammability Limit (LFL) in the event
of a sudden loss of refrigerant into the room.
Basements and cellars must have adequate ventilation for the removal of heat rejected from the
freezer(s).
WARNING!
Risk of personal injury
 DO NOT attempt to lift any freezer by hand. Preferred lifting for loading and unloading is by
mechanical lifting equipment.
NOTICE!
Risk of material damage
 Maintenance, adjustment and repair work should be carried out only by QUALIFIED,
EXPERIENCED personnel who have been AUTHORIZED to undertake such work by New
Brunswick Scientific or its authorized agents.
 Failure to use authorized service agents will invalidate the warranty.
4
Installation