Thermo Scientific DLT, Инструкция по установке и эксплуатации

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Thermo Scientific Harris Ultra-Low Temperature Freezers Installation and Operation
11
9 Optional Equipment
The following equipment is available for some freezer models
either as factory-installed or as field-installed options. Refer to
the Accessories section on page 11 for more information on these
and other options, including inventory racks and storage boxes.
For additional information, contact your representative or
Customer Sales at 1-800-221-4201.
9.1 Backup Protection Devices
Liquid Nitrogen and Liquid CO
2
systems are available to protect
your product in case of a prolonged power failure. These systems
are powered by a rechargeable battery with a built-in automatic
charger. Refer to Section 6.1 on page 6 for additional
information.
9.1.1 Liquid Nitrogen (LN
2
)
This system uses portable and locally refillable bottles. These
containers keep the liquid at low temperature and pressure by
continually venting a small amount of gaseous N
2
. You must
check the liquid level indicator daily to assure an adequate
emergency supply.
9.1.2 Liquid CO
2
This system uses portable and locally refillable bottles that are
not vented and have a virtually unlimited standby life unless they
develop a leak. These containers hold liquid at room temperature
and high pressure. Several bottles can be connected together,
increasing the effective length of standby refrigeration.
The coldest center air temperature achievable with CO
2
backup
is -70º C. For colder temperatures, use LN
2
.
9.2 Circular Chart Recorder
Chart recorders can be factory or field installed. If your freezer
does not have a recorder, you can order one for panel, wall, or
freestanding mounting.
9.3 Remote Alarm
The remote alarm terminals on the back of the freezer are
connected to freezer internal dry contacts. You can connect a
remote alarm package with a separate 24 volt power supply.
10 Accessories
Note:
For accessories and options not described herein, or for special modifications, contact Sales.
Inventory Rack Capacity Chart for all Freezers
Rack Catalog No.
(Rack Quantity) Box Size in.
Cubic Foot Capacity
1 3.1 4.5 6.8 10.3 13.7 17.1 20.5 13.4 17.2 20.2 24.4
For Chest Freezers
5972, Full Rack, (7) 2 in. boxes — 9 12 — — — — — — — — —
5973, Full Rack, (5) 3 in. boxes — 9 12 — — — — — — — — —
5978, Full Rack, (11) 2 in. boxes — — — 12 18 24 30 36 — — — —
6096, Full Rack, (8) 3 in. boxes — — — 12 18 24 30 36 — — — —
6230, Half Rack, (6) 2 in. boxes — — — 24 36 48 60 72 — — — —
6231, Half Rack, (4) 3 in. boxes — — — 24 36 48 60 72 — — — —
For Upright Freezers
6112-1, (12) 2 in. or (9) 3 in. boxes — — — — — — — — 20 — — —
6113-1, (16) 2 in. or (12) 3 in. boxes — — — — — — — — — 20 25 30