Fisher Scientific Isotemp Plus 13-986-142 User manual

Isotemp Plus
General Purpose Laboratory Freezers
Catalog Numbers:
13-986-142/142R
13-986-143/143R
13-986-144/144R
13-986-147/147R
104215• Rev. A

Introduction..........................................................................................................................................................3
Safety Precautions........................................................................................................................................3
Performance Characteristics ........................................................................................................................3
Power Requirements ....................................................................................................................................3
Installation ..........................................................................................................................................................4
Unpacking ....................................................................................................................................................4
Visible Loss or Damage ........................................................................................................................4
Concealed Loss or Damage ..................................................................................................................4
Packing List ..................................................................................................................................................5
Selecting a Location ....................................................................................................................................5
Installing and Leveling Casters ....................................................................................................................5
Shelves ........................................................................................................................................................6
Electrical Connection ....................................................................................................................................6
Operation ............................................................................................................................................................7
Control Layout ..............................................................................................................................................7
Setting the Temperature Control Setpoint ..............................................................................................7
Units Select ............................................................................................................................................8
Calibration Offset....................................................................................................................................8
Hold-Off Time ........................................................................................................................................9
Temperature Digression................................................................................................................................9
Automatic Defrost ........................................................................................................................................9
aintenance......................................................................................................................................................10
Error Codes ................................................................................................................................................10
Interior Lights ..............................................................................................................................................10
Cabinet Cleaning ........................................................................................................................................10
Cleaning the Condensor ............................................................................................................................10
Condensate Evaporator Pan ......................................................................................................................11
Troubleshooting ................................................................................................................................................12
Replacement Parts............................................................................................................................................13
Wiring Diagrams................................................................................................................................................14
Warranty ............................................................................................................................................................16
2
Table of Contents

3
Safety Precautions
Your satisfaction and safety are important to Fisher
Scientific, a complete understanding of this unit is neces-
sary to attain these objectives.
As the ultimate user of this apparatus, it is your responsi-
bility to understand its proper function and operational
characteristics. This instruction manual should be thor-
oughly read and all operators given adequate training
before attempting to place this unit in service. Awareness
of the stated cautions and warnings, and compliance with
recommended operating parameters – together with
maintenance requirements – are important for safe and
satisfactory operation. The unit should be used for its
intended application; alterations or modifications will void
the Warranty.
This product is not intended, nor can it be used, as a ster-
ile or patient connected device. In addition, this appara-
tus is not designed for use in Class I, II or III locations as
defined by the National Electrical Code, unless otherwise
noted.
Performance Characteristics
Temperature Range: -30° to 0°C (-22° to 32°F)
Temperature Stability: ±4°C
Power Requirements
Cat. No. Volts ±10% Amps Hz
13-986-142/142R: 115 10.0 60
13-986-143/143R 230 5.0 60
13-986-144/144R 115 10.0 60
13-986-147/147R 230 6.2 60
Introduction
Warning
As a routine laboratory precaution,
always wear safety glasses when
working with this apparatus.
DANGER: RISK OF CHILD ENTRAP-
ENT. BEFORE YOU THROW AWAY
YOUR OLD REFRIGERATOR OR
FREEZER:
• TAKE OFF DOORS
• LEAVE THE SHELVES IN THE
PLACE SO THAT CHILDREN
AY NOT EASILY CLI B
INSIDE.

Unpacking
Save all packing material if apparatus is received dam-
aged. This merchandise was carefully packed and thor-
oughly inspected before leaving our factory.
Responsibility for its safe delivery was assumed by
the carrier upon acceptance of the shipment; there-
fore, claims for loss or damage sustained in transit
must be made upon the carrier by the recipient as fol-
lows:
Visible Loss or Damage
Note any external evidence of loss or damage on the
freight bill, or express receipt, and have it signed by the
carrierʼs agent. Failure to adequately describe such
external evidence of loss or damage may result in the
carrierʼs refusing to honor your damage claim. The carri-
er will supply the form required to file such a claim.
Concealed Loss or Damage
Concealed loss or damage refers to loss or damage,
which does not become apparent until the merchandise
has been unpacked and inspected. Should either occur,
make a written request to the carrierʼs agent within 15
days of the delivery date; then file a claim with the carrier
since the damage is the carrierʼs responsibility.
If you follow the above instructions carefully, we will guar-
antee our full support of your claim to be compensated for
loss from concealed damage.
DO NOT – FOR ANY REASON – RETURN THIS UNIT
WITHOUT FIRST OBTAINING AUTHORIZATION
4
Installation

Packing List
The following items are packed in the envelope located
inside the freezer chamber. If any of the following items
are not present, report the missing item to your local
Fisher representative.
1. Instruction anual
3. Door Lock Key
4. Power Switch Key
5. Chart Recorder Instructions
(Catalog No.ʼs with “R”)
Selecting a Location
Choose a location for the freezer that will provide at least
three inches of clearance between the cabinet and any
adjacent vertical surface at the sides and rear.
Appropriate electrical power must be available. Locate
the freezer within 6 feet of the power outlet so that no
extension cord is required.
An installation instructions form is attached to the
front of the unit. After installation, confirm that the
unit was installed per these instructions, that the
required information was completed and that the form
was faxed to the specified number.
Installing and Leveling Casters
Freezers are shipped with four unattached threaded cast-
ers. Casters screw directly into the weld nut in each cor-
ner of the base of the unit. Use the wrench provided to
thread the casters completely into the base of the unit.
Back the casters in or out until the unit is level and resting
on all four casters. See figure 1.
UNPACKING AND INS ALLA ION
Freezer Base
Thread casters directly
into base atfourcorners.
Tighten using
wrench provided.
Note
The freezer must be level in order to
provide adequate condensation
drainage as well as proper door
alignment and operation. The freez-
er should be in its final operating
location and set so that it is firmly
positioned on the floor.
5
Figure 1

Shelves
Shipped inside each cabinet are 3 epoxy coated shelves
per door opening. Epoxy coated filler shelves are provid-
ed for units with more than one door. Shelf supports,
located in the plastic bag, are pushed into the side
pilasters, one in each corner, at the desired shelf height.
Replacement shelves are available individually. See
Replacement Parts for shelf part numbers. See Figure 2
for shelf installation.
Electrical Connection
Determine the total amount of current presently being
used by other apparatus connected to the circuit that will
be used by this freezer. It is critical that this added cur-
rent demand and other equipment on this circuit not
exceed the rating of the fuse or circuit breaker in use.
The frequency and nominal voltage requirements for the
unit are specified on the data plate, which is located on
the interiorʼs upper left side. Plug the unit only into a
power source that meets these requirements. Low line
voltage is often the cause of service complaints. With the
unit running, check that the line voltage is within ±10% of
that specified on the data plate.
The customer should have the wall receptacle and circuit
checked by a qualified electrician to verify the receptacle
is properly grounded and is connected to the proper
power supply. The following list gives the NE A
plug/receptacle configuration for the corresponding freez-
ers.
6
UNPACKING AND INS ALLA ION
Caution
If the unit was tilted in excess of 30
degrees, level it and do not apply
electrical power for a minimum of 12
hours.
Warning
Be sure that the power supply is the
same voltage that is specified on the
freezerʼs data plate.
Warning
For personal safety this unit must be
properly grounded. DO NOT under
any circumstance cut or remove the
ground prong from the power cord.
DO NOT use a plug adapter that elimi-
nates the ground prong.
Lab Freezers (115V)
Catalog Noʼs NE A Plug NE A Receptacle
13-986-142 5-20P 5-20R
13-986-144 5-20P 5-20R
Lab Freezers (230V)
Catalog Noʼs NE A Plug NE A Receptacle
13-986-143 L14-20 L14-20
13-986-147 L14-20 L14-20
Caution
Do not use an extension cord. Use of
an ungrounded cord or an overloaded
circuit VOIDS the compressor warran-
ty.
Figure 2
Caution
Catalog numbers ending in HK are
international 3-Wire systems and
should not be confused with 230V
domestic units which are 4-Wire sys-
tems. Consult a qualified electrician
before powering this unit.

7
Before operation, it is necessary to become familiar with
the freezer controls located on the header panel. A layout
of the controls is given below.
Begin operation by inserting the key into the key switch
located on the header panel. The key switch is packed
inside the envelope, which is shipped in the refrigerator
chamber. Turning the key switch to the ON ( | ) position
will energize the digital panel display.
Control Layout
The digital temperature controller is located on the header
panel (See Figure 3). When the unit is initially turned on,
the display will indicate current chamber temperature.
The temperature units will be indicated by the °C or °F
LED located just to the right of the temperature display.
The refrigerator is factory set at -15°C.
When the unit is first energized, there is a delay time
before the compressor will energize. When the delay
time is over, the Cool LED will illuminate, the compressor
will run and the chamber will cool
Setting the Temperature Control Setpoint
To change the set temperature, press and release the
enu keypad once. The display will flash SP and the
ode LED will be illuminated. The last set temperature
Operation
I
O
POWER
Units LED'S
Decrease Keypad
Cool LED
Key Switch
Temperature Display
Mode LED
MenuKeypad
Increase Keypad
Warning
This product is NOT approved for stor-
age of flammable or explosive materi-
als. Also, it is NOT approved for use
in hazardous locations containing
explosive atmospheres.
Figure 3

will then be shown in the display. To change the tempera-
ture, press the UP or DOWN arrow key. The adjustable
temperature range is 0 to -30°C (32 to -22°F). When the
desired set temperature is displayed, press the enu key-
pad to enter the set temperature and activate the Units
Select menu.
Units Select
The second menu selects the units. The freezer control
displays temperature in °C or °F. The factory setting is
°C. Starting from the temperature display mode ( ode
LED off), press the enu key twice. The current temper-
ature units are displayed. To switch between units, press
the UP or DOWN arrow key to change to the desired
units, then press the enu key to select. The desired
unit LED will be displayed on the right of the temperature
display.
Calibration Offset
In the event the freezer needs calibrated, a simple routine
is available to adjust the display and control point to a ref-
erence standard. To set the temperature offset, press
and hold the enu keypad for 5 seconds. The display
will flash oS (offset) followed by the last temperature off-
set value. The factory setting is 0. To change the offset
value, press the UP or DOWN arrow key, then press the
enu key. The value shown in the display will be added
to the previous temperature reading. The maximum off-
set value is ±5°C (±9°F).
For Example:
The freezer has been operating at -15°C for 30 minutes.
The display indicates -15°C but a reference thermometer
in the refrigerator chamber indicates -17°C. The operator
presses and holds the enu keypad for 5 seconds and
changes the offset value from 0 to -2. The enu key is
pressed again. Now the display indicates a chamber
temperature of -17°C and the system begins to control to
the desired temperature of -15°C (as long as the 3 min.
time delay has expired).
Allow an additional 30 to 40 minutes for the freezer to
again stabilize. If the display is still inaccurate, repeat the
Calibration Offset procedure.
8
OPERA ION

9
NO E: While in any of the controller mode setups
(temp set, units or calibration offset), the controller will
wait 15 seconds for a value to be entered. If there is no
keypad operation within the 15-second time window,
control will automatically revert to the temperature dis-
play mode and the Mode LED will turn off.
Hold-Off Time
Following the offset menu is the hold-off (Ho) menu. The
display will momentarily flash “Ho”, followed by a number.
The number shown is the delay time in minutes between
compressor activations. Use the UP/DOWN keypads to
change the value.
Increasing the hold-off time will reduce the number of com-
pressor activations, thus decreasing the amount of ice build
up on the evaporator and reduce the defrost time.
NOTE: Increasing the Hold-Off time should never substi-
tute the automatic defrost cycle.
Temperature Digression
By pressing the Increase keypad, the display will show the
warmest temperature recorded since the unit was ener-
gized or the digression values were reset. Pressing the
Decrease keypad will display the coldest temperature
recorded since the unit was energized or the digression val-
ues were reset.
To reset the temperature digression values, simply press
the Increase and Decrease keypads at the same time. The
display will show Clr, indicating the controller will begin
recording new warm and cold digressions once more.
These values are also reset when power is turned off.
Automatic Defrost
All freezers are equipped with automatic defrost timers.
The timers are factory set to complete four defrost cycles
every 24 hour period. Each defrost cycle lasts approxi-
mately 40 minutes. During a defrost cycle, the evaporator
heaters are energized and the chamber temperature
increases. Also, the compressor motor is held off, even
though the Cool LED is illuminated.
OPERA ION
Caution
INCREASING the offset value
DECREASES the temperature at
which the system controls.

10
Error Codes
Error codes indicate when the controller is sensing a
problem. A description of each is given below. See the
Troubleshooting Table for additional information on error
codes.
E1 Open sensor.
E2 Under temperature. Temperature at sensor is
less than -36°C.
E3 Over temperature. Temperature at sensor is
greater than 37°C.
Interior Lights
The interior lighting automatically turns on when the door
is opened. If the interior lamp fails, replace with the same
size and wattage lamp. DO NOT USE REDUCED
WATTAGE LA PS. The reduced wattage lamps general-
ly fail to light below 60°F (15°C). All replacement lamps
should be plastic coated.
Cabinet Cleaning
The cabinet interior should be cleaned frequently. Any
spilled liquid should be wiped off immediately. Stains
resulting from some spills can be permanent if not quickly
removed. The cabinet exterior should be cleaned occa-
sionally. A mild detergent and lukewarm water or a solu-
tion of bicarbonate of soda (1 tablespoon per gallon of
water) is recommended for cleaning the interior and exte-
rior of the cabinet. All surfaces should be rinsed and thor-
oughly dried.
Cleaning the Condenser
For efficient operation, it is recommended that the con-
denser coil and fan be cleaned every 4 to 6 months. The
condenser coil is located behind the vented part of the
header panel (left side). Remove the header panel for
access. Vacuum clean the front surface of the coil thor-
oughly, or direct forced air through the condenser from
the rear. If necessary, use a stiff bristled brush to loosen
any dirt. The failure to clean the condenser voids the
warranty.
aintenance and Servicing
Caution
When servicing the unit, disconnect
plug from the electrical power source.
Caution
Do not use any type of abrasive such
as steel wool or fluids, such as gaso-
line, Naptha or paint thinner. These
materials could be harmful to plastic
materials, door gasket and painted sur-
faces.
Caution
Accessing and cleaning the conden-
sate coil or pan should be done by
qualified personnel.

Condensate Evaporator Pan
The condensate evaporator pan, located behind and
below the condenser fan, must be cleaned periodically to
prevent foul odors and to operate efficiently. Vacuum
clean if dry or sponge clean with soap and water.
11
MAIN ENANCE AND SERVICING

12
Symptom Probable Cause Action
Does not run Unit unplugged. Plug in unit.
Blown fuse or tripped circuit breaker. Check fuse or circuit breaker at
breaker box.
Runs continuously Frost buildup on refrigeration Defrost unit. Check defrost cycle.
coils.
Clicking sound The compressor is equipped with Disconnect power and call for
a thermal protector. This device service.
shuts off the compressor when it
becomes too hot. A clicking sound
occurring about every 30 seconds
indicates this protector is working.
Insufficient cooling Set temp is too high. Reduce temperature setting, verify
(Cool LED not lit.) Cool LED is on.
Condenser coil dirty. Clean condenser coil with a vacuum
cleaner.
Automatic defrost is activated. Allow approx. 40 minutes for defrost
cycle to end (2 hours max.)
This table is intended to assist in resolving user-correctable freezer problems by relating symptoms to their
likely causes. If service beyond the scope of this table is required, contact Fisher Scientific Service Division
at 1-800-438-4851.
Troubleshooting

13
Replacements parts for laboratory freezers, serviceable by the user, may be ordered by part number from
Fisher Scientific Co. at 1-800-438-4851.
Item Part No.
Shelves SPN13986210E
Compressor Relay (K1) SPN88616
Temperature Controller SPN104161
International Version Controller SPN105402
Chart Recorder SPN104114
Chart Recorder Instructions SPN104118
Front Shelf Support SPN103264
Rear Shelf Support SPN103265
Starter Component Kit 302-977A
Replacement Parts

14
Wiring Diagrams
+
NOTE: Two door models have two face
heaters,two door switches,two condenser
fans and two evaporator fans.
EVAPORATOR
FAN CONTROL
PNK
RED
CONTROLLER
TAB 3
AC
12 VDC
Cool
Relay
+-
KEY SWITCH
BLK
BLK
DEFROST
SWITCH1
BLK
BLK
YEL
BLU
L1
Compressor
Relay
-
K1
COMPRESSOR MOTOR
CONDENSER FAN(S)
K1BRN
DEFROST TIMER
CUT-OUTCOIL
ORN
RED
DEFROSTLIMIT
CONTROL
WHT
DEFROSTHEATER
CONDENSATE DRAINHEATER
ORN
FACEHEATER(S)
BLU
DEFROST
SWITCH2
PRPL
EVAPORATOR
FAN(S)
WHT
WHT
WHT
FREEZER LIGHT
N
TAB4 is relay terminal(+).
TAB5is relay terminal(-).
115 VAC,60Hz (Domestic)
220 VAC,50Hz (International)
odels: 13-986-142 and 144

15
WIRING DIAGRAMS
CONTROLLER
TAB 3
NOTE: Two door models have two face
heaters,two door switches,two condenser
fans and two evaporator fans.
RED
12 V DC
AC
KEY SWITCH
ORN
BLK
BLK
DEFROST TIMER
MOTOR
Compressor
Relay
Cool
Relay
-
+
R1
-+
CONDENSATE DRAINHEATER
COMPRESSOR MOTOR
CONDENSER FAN(S)
DEFROSTHEATER
WHT
BRN
PNKR1
DEFROST TIMER
CUT-OUT COILDEFROST
SWITCH1
ORN
ORN
DEFROST LIMIT
CONTROL
RED
BLK
YEL
YEL
BLU
BLU
L1
WHT
BLK
FACE HEATER(S)
EVAPORATOR
FAN CONTROL
DEFROST
SWITCH2
PRPLBLU
EVAPORATOR
FAN(S)
WHT
WHT
RED
WHT
BLK
FREEZER LIGHT
N
Relay Tab 4 is+
Relay Tab5is--
230 VAC
(domestic)
odels: 13-986-143, 147

Laboratory instruments and equipment manufactured by Fisher Scientific Company L.L.C. – Laboratory
Equipment Division (hereinafter called “the Company”) are warranted only as stated below.
Subject to the exceptions and upon the conditions specified below, the Company agrees, at its election, to
correct by repair, by replacement, or by credit to the purchaser, any defect of materials or workmanship which
develops within one year (13 months for refrigerator and freezer products) from the date of purchase by the
original purchaser by the Company or by an authorized dealer of the Company provided that investigation or
factory inspection by the Company discloses that such defect developed under normal and proper use
The exceptions and conditions mentioned above are the following:
a. The Company makes no warranty concerning components or accessories not manufactured by it,
such as tubes, batteries, etc. However, in the event of the failure of any component or accessory not
manufactured by the Company, the Company will give reasonable assistance to the purchaser in
obtaining from the respective manufacturer whatever adjustment is reasonable in the light of the
manufacturer’s own warranty.
b. The Company shall be released from all obligations under its warranty in the event repairs or
modifications are made by persons other than its own service personnel or authorized dealer
personnel unless such repairs by others are made with the written consent of the Company.
c. THE COMPANY MAKES NO WARRANTY OF MERCHANTABILITY, FITNESS FOR ANY
PARTICULAR PURPOSE, OR ANY OTHER WARRANTY, EXPRESS OR IMPLIED, EITHER IN
FACT OF BY OPERATION OF LAW,…STATUTORY OR OTHERWISE.
d. The above warranty and the above obligations to repair, replace, or credit are complete and
exclusive and the Company expressly disclaims liability for lost profits or for special, indirect,
incidental, consequential, or exemplary damages of any nature whether attributable to contract,
warranty, negligence, strict liability, or otherwise even if the Company has been advised of the
possibility of such damages.
e. Representations and warranties made by any person, including dealers and representatives of the
Company, which are inconsistent or in conflict with the foregoing warranty shall not be binding upon
the Company unless reduced to writing and signed by an officer of the Company.
Warranty