Thermo Scientific Jewett User manual

Jewett -30°C Laboratory
Freezers A and D
Installation and Operation
325099H14Rev. A November 2014
Visit us online to register your warranty
www.thermoscientific.com/labwarranty

IMPORTANT Read this instruction manual. Failure to follow the instructions in this manual can result in
damage to the unit, injury to opertaing personnel, and poor equipment performance.
CAUTION All internal adjustments and maintenance must be performed by qualified service personnel.
Material in this manual is for informational purposes only. The contents and the product it describes are
subject to change without notice. Thermo Fisher Scientific makes no representations or warranties with respect
to this manual. In no event shall Thermo be held liable for any damages, direct or incidental, arising from or
related to the use of this manual.
© 2014Thermo Fisher Scientific Inc. All rights reserved.

Table of Contents
Table of Contents
Introduction .............................................................................1
Specifications ...........................................................................2
Intended Use............................................................................2
Safety Precautions.....................................................................3
Unpacking ................................................................................4
Temperature Monitoring..........................................................4
Installation ...............................................................................5
Location...................................................................................5
Leveling ...................................................................................5
Wiring .....................................................................................5
Drawers....................................................................................5
Door Seal.................................................................................6
Solid Doors..............................................................................6
Final Checks ............................................................................6
Control Panel ...........................................................................7
Control Panel Features.............................................................7
Display Functions ....................................................................9
Programming Functions.........................................................10
Service Parameters..................................................................11
Operation ...............................................................................12
Temperature Settings .............................................................12
Start Up .................................................................................12
Defrost ...................................................................................13
Automatic Defrost .................................................................13
Alarm Systems ........................................................................14
Operating the Alarm ..............................................................14
Local and Remote Alarms ......................................................14
Installing a Remote Alarm (Optional) ....................................15
Alarm Test .............................................................................15
Chart Recorders......................................................................17
Set Up and Operation............................................................17
Changing Chart Paper ...........................................................18
Power Supply.........................................................................18
Calibration Adjustment..........................................................19
Drawers ..................................................................................20
Removing the Drawers...........................................................20
Reinstalling the Drawers ........................................................21
Changing Drawer Position.....................................................21
Cleaning .................................................................................22
Cleaning the Drawers.............................................................22
Cleaning the Condenser.........................................................22
Troubleshooting .....................................................................23
Warranty Statement ...............................................................24

Introduction
Thermo Fisher Scientific Laboratory Freezers 1
1 Introduction This manual provides installation and operation instructions for laboratory
freezers with preset temperature setpoints of -30ºC.
The control system, standard on all models, includes:
• Key-operated power and alarm switch
• Preset temperature setpoint
• Digital temperature display with 0.1C resolution
• Graphic temperature display
• Audible and visual power failure indicators
• Alarm silence, ringback, and automatic reset functions
• SureTempTM alarm system test
Other standard features include:
• Keyed door locks
• Remote alarm contacts
• CFC-free refrigerant
• CFC-free foamed in-place urethane insulation
• Quiet, hermetically sealed refrigeration compressors

Introduction
2 Laboratory Freezers Thermo Fisher Scientific
1.1 Specifications
Environmental Operating
Conditions
Pollution Degree 2
Installation Category II
Altitude 2000m MSL (mean sea level)
Humidity max 80% - non-condensing
Voltage Tolerance ±10%
Ambient Temperature 15-32°C (59-90°F)
Product Usage Indoor Use Only
Intended Use Be sure to read this section to determine whether your freezer model is
intended for use as a medical device.
Models with prefix JPL are intended for use as medical devices.
Models with prefix JLF are not intended for use as medical devices
and are not intended for in vitro diagnostic tests.

Safety Precautions
Thermo Fisher Scientific Laboratory Freezers 3
2 Safety Precautions In this manual and on labels attached to this product, the words
WARNING and CAUTION mean the following:
WARNING : potential danger of electric shock which, if not avoided, could
result in serious injury or death.
CAUTION : a situation which, if not avoided, may result in minor or
moderate injury, impaired performance, or damage to the equipment.
Before installing, using or maintaining this product, please be sure to read
this manual and product warning labels carefully. Failure to follow these
instructions may cause this product to malfunction, which could result in
injury or damage.
Below are important safety precautions that apply to this product:
• Use this product only in the way described in the product literature and
in this manual. Before using it, verify that this product is suitable for its
intended use. If the equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.
• Do not modify system components, especially the controller. Use
Thermo Scientific exact replacement equipment or parts. Before use,
confirm that the product has not been altered in any way.
• Your unit must be properly grounded in conformity with national and
local electrical codes. Never connect the unit to overloaded power
sources.
• Disconnect the unit from all power sources before cleaning,
troubleshooting, or performing other maintenance on the product or its
controls.
WARNING: Do not store flammable materials in this unit..

Unpacking
4 Laboratory Freezers Thermo Fisher Scientific
3 Unpacking At delivery, examine the exterior for physical damage while the carrier’s
representative is present. If exterior damage is present, carefully unpack and
inspect the unit and all accessories for damage.
If there is no exterior damage, unpack and inspect the equipment within five
days of delivery. If you find any damage, keep the packing materials and
immediately report the damage to the carrier. Do not return goods without
written authorization. When submitting a claim for shipping damage,
request that the carrier inspect the shipping container and equipment.
4 Temperature
Monitoring IMPORTANT NOTE: We recommend the use of a redundant and
independent temperature monitoring system so that the freezer can be
monitored continuously for performance commensurate with the value of
product stored.

Installation
Thermo Fisher Scientific Laboratory Freezers 5
5 Installation
CAUTION : Improper operation of the equipment could result in
dangerous conditions. Follow all instructions and operate within design
limits noted on the dataplate.
5.1 Location Install the unit in a level area free from vibration with a minimum of 6
inches of space on the sides and rear and 12 inches at the top. Undercounter
units require 1 inch of clearance on top.
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 90F (15 to 32C).
5.2 Leveling The unit must be level. If the unit is out of level, you may need to shim the
corners with thin sheets of metal.
5.3 Wiring Before connecting your freezer to a power source, be sure to check the
dataplate for correct voltage. Standard NEMA plugs are provided with all
units. Wiring diagrams are attached to the back of the cabinet.
CAUTION : Connect the equipment to the correct power source. Incorrect
voltage can result in severe damage to the equipment.
WARNING : 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 unit to already
overloaded power lines.
Always connect the equipment to a dedicated (separate) circuit. Electrical
codes require fuse or circuit breaker protection for branch circuit
conductors. Use time delay fuses for #12 AWG circuits.
5.4 Drawers Laboratory freezers come standard with shelves. Additional drawers are offered
as available options.

Installation
6 Laboratory Freezers Thermo Fisher Scientific
5.5 Door Seal Door seal integrity is critical for freezers. A loose fitting gasket allows moist
air to be drawn into the cabinet, resulting in quicker frost buildup on the
evaporator coil, longer running time, poor temperature maintenance, and
increased operation cost.
To check the door seal, complete the following steps:
1. Open the door.
2. Insert a strip of paper (a couple of inches wide) between the door gasket
and the cabinet flange and close the door.
3. Slowly pull the paper strip from the outside. You should feel some
resistance.
4. Repeat this test at 4-inch intervals around the door. If the door does not
seal properly, replace the gasket.
5.6 Solid Doors Solid doors stay open if opened 90 degrees. Solid door spring tension cannot
be adjusted.
5.7 Final Checks Before start up, complete the following steps:
1. Make sure that the unit is free of all wood or cardboard shipping
materials, both inside and outside.
2. Verify that the unit is connected to a dedicated circuit.

Control Panel
Thermo Fisher Scientific Laboratory Freezers 7
6 Control Panel
Figure 1. Laboratory Freezer Control Panel
6.1 Control Panel
Features
The control panel is located on the top right side of your freezer. You can
use the three pushbuttons (#5, #8, and #9 in Figure 1) to change the
temperature display (#1) or to adjust temperature and alarm setpoints. The
thermometer display (#2) provides a quick visual indicator of current
cabinet temperature and alarm conditions.
1. Main temperature display — during normal operation, shows cabinet
temperature in degrees Celsius, as measured by the sensor inside the
cabinet. You can use the buttons to display other values such as setpoints
and highest and lowest recorded temperatures. The number in the main
display flashes when the value can be modified.
2. Thermometer — shows cabinet temperature and alarm conditions.
There are 10 horizontal bars: 9 are displayed during normal operation,
the tenth (top) bar indicates a warm alarm condition. The number of
bars illuminated indicates approximate cabinet temperature. Depending
on alarm settings, 4 or 5 bars illuminated indicate that the cabinet is at
setpoint. For example, suppose that the cabinet temperature setpoint is
-20ºC and that the warm and cold alarm setpoints are -16ºC and
-24ºC. Then the number of bars illuminated indicates cabinet
temperature as shown in Table 1