Thermo Scientific Revco Cryogenic Storage Freezers
Installation and Operation
2
5 Installation
Do not exceed the electrical and temperature ratings printed on
the dataplate located on the lower left side of the unit.
CAUTION!
Improper operation of the equipment
could result in dangerous conditions. To preclude
hazard and minimize risk, follow all instructions and
operate within the design limits noted on the dataplate.
5.1 Location
Install the unit in a level, well-ventilated area free from vibration,
with a minimum of six inches of space on the sides and 12 inches
behind the rear. Refer to Section 5.3 for further instructions on
leveling cabinets. Allow enough clearance so that the lid can
swing open at least 90 degrees.
Do not position the equipment in direct sunlight or near heating
diffusers, radiators, or other sources of heat. The ambient
temperature range at the location must be 59 to 77ºF
(15 to 25ºC).
CAUTION!
To allow for proper air flow, a minimum
of 12 inches of clearance space is required behind the
freezer.
CAUTION!
FLAMMABLE REFRIGERANT!
Cryogenic models with voltage M, R, V and W use
small quantities of the refrigerant R600a, which can
form a combustible mixture when combined with
oxygen. In order to conform with safety regulations, it
is important to locate your freezer in a large enough
space to minimize danger of combustion even in
worst-case conditions (no ventilation, no air exchange,
a steady refrigerant leak). Under these conditions the
minimum free volume requirements would be at least
86 m
3
or 3006 ft
3
.
5.2 Wiring
CAUTION!
Connect the equipment to the correct
power source. Incorrect voltage can result in severe
damage to the equipment.
CAUTION!
For personal safety and trouble-free
operation, this unit must be properly grounded before
it is used. Failure to ground the equipment may cause
personal injury or damage to the equipment. Always
conform to the National Electrical Code and local
codes. Do not connect the unit to overloaded power
lines.
Your freezer is equipped with the plug style shown in Figure 1,
unless it is a 50Hz or 3-phase model. The standard NEMA plug
meets UL requirements.
Figure 1. Plug Style for 60Hz Single-phase Models
Always connect the freezer to a dedicated (separate) circuit. Each
freezer is equipped with a service cord and plug designed to
connect it to a power outlet which delivers the correct voltage.
Supply voltage must be 10%, -5% of the freezer rated
voltage.
3-phase or 50Hz models require hard wiring to a disconnect
panel.
Note:
RevcoUltima freezers are equipped with a standard
built-in Voltage Safeguard circuit to detect and adjust
low line voltage.
CAUTION!
Never cut the grounding prong from the
service cord plug. If the prong is removed, the
warranty is invalidated.
5.3 Leveling
The unit must be level both front to back and side to side.
To level chest models, leave the casters in place and shim the low
wheel(s) with strips of sheet metal cut at least 1/2 in. wider than
the caster.
30A-250V
NEMA 6-30P
