Thermo Scientific Lab-Line Imperial 3 Operating instructions

Thermo
Scientific
Lab-Line
Imperial 3
General Purpose
Incubators
OPERATION AND REPAIR
MANUAL AND PARTS LIST
Model Numbers
302 311-1
Lab-Line 302-1 3111
3021 305M
302K 305M-1
302R27 305M1
305 306M
305-1 306M-1
3051 306M1
305L 310M
306 310M-1
306-1 311M
3061 311M-1
310 311M1
310-1
3101
311
Additional comments:
057-616-00
Rev K 09/03

9/03
OPERATION MANUAL
MANUAL NO. 057-616-00
REV. K
ECN 18820
LAB-LINE
IMPERIAL III GENERAL PURPOSE
INCUBATORS
MODEL NO. Gravity Convection:
302, 302-1
302K With Key Lock
302R27 With 1-Pen Recorder
305, 305-1 With Outlet
305L With Outlet and Left Hand Door
306, 306-1
310, 310-1 With Outlet
311, 311-1
Mechanical Convection:
305M, 305M-1 With Outlet
306M, 306M-1
310M, 310M-1 With Outlet
311M, 311M-1
1999 North 15th Ave., Melrose Park, IL 60160-1491 USA
PHONE: [phone] or [phone]; FAX: [phone]

CERTIFICATION OF DECONTAMINATION:
We cannot accept for service or credit a product that has been exposed to or
contaminated with chemically or biologically toxic or infectious substances or subjected
to radioactivity without first being certified as free from said contamination.
Please have your Medical and/or Safety Officer sign this form certifying that
proper decontamination procedures have been followed to render the product safe and
free from hazards.
Any product forwarded to us which is not accompanied by this form and a proper
Return Goods Authorization Number will be returned to the sender. To obtain Return
Goods Authorization Number, contact: Customer Relations Department at 1-800/522-
5463.
We hereby certify that the LAB-LINE INSTRUMENTS, INC. product:
Model No. and Serial No. ,
which is being forwarded has been properly decontaminated and is free from all toxic hazards,
infectious agents, radioactivity and/or other hazards.
Company/Institution Name:
Street Address:
City: State Zip
Name (please print): Title
Signature:
Phone:
DECONTAMINATION PROCEDURE (Be Specific):
Nature of Hazard That Required Decontamination:
3

TABLE OF CONTENTS
SECTION TITLE
1 Introduction
2 Description
3 Specifications
4 Installation
5 Features
6 Operation
7 Maintenance
8 Troubleshooting
9 Service Guide
10 Replacement Parts
Warranty
5

SECTION1
INTRODUCTION
THANK YOU
for selecting Lab-Line Instruments for your equipment needs. For maximum value and ease of
start-up,
PLEASE PROCEED AS FOLLOWS:
• Inspect the carton and contents for shipping damage. Notify the carrier immediately if
damage is found.
• Use the Accessory Checklist when unpacking to verify that the complete unit has been
received. Do not discard packing materials until all is accounted for.
• Read this Operation Manual thoroughly before deciding upon an appropriate location for the
unit: you will want to consider the availability of power and other unit requirements, as well
as user convenience.
• Insist that every operator of this unit becomes familiar with the Operation Section of this
manual.
• Be sure to fill out the Warranty Registration Card and mail it in to Lab-Line Instruments
within seven (7) days after receiving the unit.
IF
after reading this manual you should have any difficulties with the installation or operation
instructions, please call:
Lab-Line Customer Relations Department
[phone] or [phone]
ALL RIGHT RESERVED
The information contained in this manual is the exclusive property of Lab-Line Instruments, Inc., and has been pro- vided solely
to enable the users of the equipment described herein to operate and maintain such equipment. Any other use of this information,
or the reproduction or transmission of all or any portion of this manual without prior written consent of the manufacturer is
expressly prohibited. © 2003, Lab-Line Instruments, Inc.
6

SECTION 2
DESCRIPTION
Lab-Line Imperial III General Purpose Incubators are useful in all types of
general incubating and paraffin imbedding.
Cabinets are made of heavy-gauge steel with a powder-coated finish for optimum
appearance and easy cleaning, while the interior walls are stainless steel to spread warm-
wall radiant heat evenly throughout the chamber. Sheathed, low-watt density heaters are
in direct contact with chamber walls to allow close temperature control and quick
recovery after door openings. This arrangement also minimizes temperature gradients
and offers a large working area in the chamber.
A double set of doors, the inner of tempered glass, permits unobstructed viewing
of chamber contents without disturbing the interior environment. Slide-out shelving can
be positioned to meet user requirements.
A PID microprocessor based controller maintains chamber temperature. An over-
temperature safety thermostat controls temperature in the event of primary control failure.
A status lamp above each control is lit when the respective control is maintaining power
to the heaters.
Incubators are available in three sizes. A grounded 3-prong convenience outlet is
supplied in midsize model chambers and 2 outlets are installed in larger models. Models
are built for either 120 VAC or 240 VAC power requirements. Models 305M, 306M,
310M and 311M have the same characteristics as those listed above but, in addition,
provide mechanical convection. These models use a blower and plenum design to
circulates the air within the chamber that allows for rapid temperature and uniformity
recovery after door openings.
MODEL 302
7

SECTION 3
SPECIFICATIONS
POWER REQUIREMENTS:
302, 302K: 120 V, 50/60 Hz, 2.1 amps, 250 watts
302-1: 240 V, 50/60 Hz, 0.7 amps, 155 watts
305, 305L: 120 V, 50/60 Hz, 3.3 amps, 400 watts
(1 ELECTRICAL OUTLET, 120 V, 500 W TOTAL LOAD)
(1 ELECTRICAL OUTLET, 120 V, 500 W TOTAL LOAD)
305M: 120 V, 60 Hz, 3.3 amps, 400 watts
305-1: 240 V, 50/60 Hz, 1.7 amps, 400 watts
(1 ELECTRICAL OUTLET, 240 V, 500 W TOTAL LOAD)
(1 ELECTRICAL OUTLET, 240 V, 500 W TOTAL LOAD)
305M-1: 240 V, 50Hz, 1.7 amps, 400 watts
306: 120 V, 50/60 Hz, 3.3 amps, 400 watts
306M: 120 V, 60 Hz, 3.8 amps, 450 watts
306-1: 240 V, 50/60 Hz, 1.7 amps, 400 watts
306M-1: 240 V, 50 Hz, 1.9 amps, 450 watts
310: 120 V, 50/60 Hz, 5.0 amps, 600 watts
(2 ELECTRICAL OUTLETS, 120 V, 500 W TOTAL LOAD)
310M: 120 V, 60 Hz, 5.0 amps, 600 watts
(2 ELECTRICAL OUTLETS, 120 V, 500 W TOTAL LOAD
(2 ELECTRICAL OUTLETS, 240 V, 500 W TOTAL LOAD)
310-1: 240 V, 50/60 Hz, 2.5 amps, 600 watts
(2 ELECTRICAL OUTLETS, 240 V, 500 W TOTAL LOAD)
310M-1: 240 V, 50 Hz, 2.5 amps, 600 watts
311: 120 V, 50/60 Hz, 5.0 amps, 600 watts
311M: 120 V, 50/60 Hz, 5.8 amps, 700 watts
311-1: 240 V, 50/60 Hz, 2.5 amps, 600 watts
311M-1: 240 V, 50/60 Hz, 2.9 amps, 700 watts
TEMPERATURE RANGE: From slightly above ambient to 65ºC
UNIT DIMENSIONS:
INSIDE OUTSIDE
302 Prefix Models: 13"W x 17"D x 20"H 16"W x 21"D x 29½"H
(33 x 43 x 51 cm) (41 x 53 x 75 cm)
305 Prefix Models: 17"W x 21"D x 25"H 20"W x 25"D x 34½"H
(43 x 53 x 64 cm) (51 x 64 x 88 cm)
306 Prefix Models: 17"W x 21"D x 25"H 20"W x 25"D x 34½"H
(43 x 53 x 64 cm) (51 x 64 x 88 cm)
310 Prefix Models: 37"W x 21"D x 25"H 40½"W x 25"D x 34½"H
(94 x 53 x 64 cm) (103 x 64 x 88 cm)
311 Prefix Models: 37"W x 21"D x 25"H 40½"W x 25"D x 34½"H
(94 x 53 x 64 cm) (103 x 64 x 88 cm)
USABLE VOLUME SHELVES SHELF AREA
302 Prefix Models: 2.6 cu. ft. 2 2.8 sq. ft.
305 Prefix Models: 5.2 cu. ft. 3 6.9 sq. ft.
306 Prefix Models: 5.2 cu. ft. 3 6.9 sq. ft.
310 Prefix Models: 11.2 cu. ft. 6 13.8 sq. ft.
311 Prefix Models: 11.2 cu. ft. 6 13.8 sq. ft.
8

SPECIFICATIONS: (Con’t)
SHIPPING WEIGHT:
302 Prefix Models 75 lbs. (34 kg)
305, 306 Prefix Models: 120 lbs. (55 kg)
310, 311 Prefix Models: 215 lbs. (98 kg)
UNIT’S ENVIRONMENTAL OPERATING CONDITIONS:
INSTALLATION CATEGORY: II
ALTITUDE: 2000 Meters MSL (Mean Sea Level)
HUMIDITY: 80% maximum, non-condensing
ELECTRICAL SUPPLY: 120VAC or 240VAC
VOLTAGE TOLERANCE: ±10% of normal rated line
TEMPERATURE: 15ºC to 40ºC
PRODUCT USAGE: This product is intended for use indoors only
9

SECTION 4
INSTALLATION
√SHIPPING CARTON:
This should be inspected upon delivery. When received, carefully examine for
any shipping damage before unpacking. If damage is discovered, the delivering carrier
should both specify and sign for the damage on your copy of the delivery receipt.
Open the carton carefully making certain that all parts are accounted for before
packaging materials are discarded—after unpacking, if damage is found, promptly report
it to the carrier and request a damage inspection promptly.
IMPORTANT: Failure to request an inspection of damage within a few days after
receipt of shipment absolves the carrier from any liability for damage: you must call for a
damage inspection promptly.
LOCATION:
Place the unit on a level surface protected from drafts, strong air currents and
large fluctuations in ambient temperature. It must be located near an electrical outlet that
meets the unit nameplate requirements. Allow clearance around the unit for free air
convection, accessory equipment, and user convenience. Do not cover the vent on top of
the incubator.
LEVELING:
It is important that the unit is level before operation. DO NOT REMOVE THE
UNIT’S RUBBER FEET—they assist proper air circulation inside and outside of the
chamber. Removal can result in erratic control and excessive heat build-up beneath the
unit.
SHELF INSTALLATION:
Each shelf bracket has 2 prongs at each end for attachment to the chamber
sidewall. Insert the longer top prongs into slots of equal height on one side of the
chamber, then push the bracket up and insert the lower prongs. Push down on the bracket
to insure proper seating.
Repeat this procedure for the opposing bracket making sure it is on
the same level as the first bracket (count the slots). Install other shelf brackets in the
same way then slide shelves into place.
ELECTRICAL REQUIREMENTS:
120 VAC models require a 120 VAC, 50/60 Hz power source. They are supplied
with a 3-wire line cord. It should be plugged into an outlet designed for 3-prong plugs. If
an extension cord is used, it also should be the 3-wire grounded type. For an outlet
designed to accept 2-prong plugs (ungrounded), it is
required that a qualified electrician replace the outlet with a new grounded type.
240 VAC models require a 240 VAC, 50/60 Hz power source. Because of the variety
of plug configurations in use worldwide for 240 VAC power, the unit is furnished with the
plug removed. The user must install a plug to conform with local code and configuration
requirements. If a plug must be installed, use only the 3-prong grounded type, rated for the
unit load requirements and matching the power outlet. Make sure the green ground wire is
secured to the plug ground terminal. Disconnect unit when not in use.
10

SECTION 5
FEATURES
CONTROL PANEL:
1 2 3 4 5
1. POWER SWITCH: This 2-position rocker switch controls power to entire
unit. The switch is lit when power is ON.
2. CONTROL STATUS LAMP: This lamp is lit when power is being supplied to
heater and not lit when power to the heater is OFF.
3. PROGRAMMABLE CONTROLLER: Maintains chamber temperature and
provides a display of either chamber or set point temperatures.
4. OVER-TEMPERATURE STATUS LAMP: This lamp is lit when either an
over-temperature condition exists or the over-temperature thermostat is
improperly set too low.
5. OVER-TEMPERATURE THERMOSTAT: This hydraulic thermostat is set by
the operator to back up the control thermostat and safeguard the incubator.
11

SECTION 6
OPERATION
DANGER: DO NOT USE IN THE PRESENCE OF FLAMMABLE OR
COMBUSTIBLE MATERIALS OR EXPLOSIVE GASES. DO NOT USE IN THE
PRESENCE OF PRESSURIZED OR SEALED CONTAINERS—FIRE OR
EXPLOSION MAY RESULT, CAUSING DEATH OR SEVERE INJURY.
WARNING: DO NOT HEAT ANY SUBSTANCE ABOVE A TEMPERATURE THAT
WILL CAUSE IT TO EMIT TOXIC FUMES—DEATH OR SEVERE INJURY MAY
RESULT
CONTROL PANEL:
4 5
START-UP:
Insert a flat-blade screwdriver into the panel opening and rotate the over-temperature thermostat
stem completely clockwise. After making sure the unit is plugged in, press the power switch to
ON.
SETTING THE OVER-TEMPERATURE THERMOSTAT:
After the unit has reached set point, rotate the over-temperature thermostat stem
counterclockwise until the over-temperature status lamp (4) is lit. Then rotate it
clockwise approximately 5 degrees past the point at which the lamp is no longer lit. At
this point, the over-temperature thermostat will control heaters only at temperatures
above the controller set point.

OPERATION: (Con’t)
TEMPERATURE CONTROLLER:
HEAT INDICATOR CHAMBER OR SETPOINT TEMPERATURE
65.0
✱▼▲
1. CONTROLLER SELF-TEST: When the incubator is powered up the
controller will display 8888 along with
the three decimal points and the heat ON
indicator lamp. The display will then blank
out for 2 seconds before showing the
chamber temperature.
2. HEAT ON INDICATOR: The heat ON indicator lamp is lit when the
chamber heater is receiving power. The lamp will
normally flash when the chamber temperature is
at set point.
3. SET POINT ADJUSTMENTS: The temperature controller normally displays the
chamber temperature. To view or change the
temperature set point proceed as follows:
PRESS CONTROLLER
✱View set point
✱▼Decrease set point
✱▲Increase set point
A. Press and hold the star key and use either the up or down arrow
key to adjust the set point to the desired temperature. Release the
star key.
B. Allow at least 30 minutes for the chamber temperature to stabilize.
13

OPERATION: (Con’t)
TEMPERATURE CONTROLLER: (Con’t)
AUTO-TUNE:
The auto tune program automatically adjusts the controller parameters to
achieve optimal temperature control.
It is not necessary to run the auto tune program when setting up the
incubator. However, if the temperature appears to be unstable, the auto tune
program can be run using the procedure shown below:
FOR BEST RESULTS:
• Set the usual set point temperature and use normal load conditions.
• Allow the incubator to stabilize at set point for at least 30 minutes.
AUTO-TUNING PROCEDURE:
A. Enter the program mode by pressing and holding BOTH the up and down
arrow keys for 3 seconds.
B. Release BOTH arrow keys when tunE is displayed.
C. The controller display should now be alternating between tunE and
oFF.
D. Press and hold the “STAR” (✱) key. Press and release the up arrow key
until At.SP is displayed. Release the “STAR” (✱) key.
E. After one minute has elapsed, the controller display will begin to alternate
between showing the chamber temperature, tunE and At.SP.
F. Allow the program to run until the display again shows only the chamber
temperature.
14

OPERATION: (Con’t)
TEMPERATURE CONTROLLER: (Con’t)
TEMPERATURE CALIBRATION:
A. Place a calibrated thermometer near the approximate geometric center of the
chamber in a position that would allow it to be read through the glass door.
B. Press and hold the “STAR” (✱) key and using the up or down arrow key,
adjust the set point to the desired temperature.
C. Allow the unit to run for at least 30 minutes.
D. The controller display should now be indicating the set point temperature.
Make note of the thermometer reading without opening the glass door.
E. Press and hold both arrow keys until the controller display indicates
tunE. Release the arrow keys. Press and release the down arrow key,
the display should now indicate LEUL. Press and hold the “STAR” (✱)
key and using the up arrow key adjust the display to read 3. Release the
“STAR” (✱) key. Press and release the up arrow key until the display
indicates Zero. The display should now alternate between Zero and a
numerical value.
F. Using the examples shown below and the thermocouple value obtained in
step above, enter the correct Zero value into the controller by pressing the
“STAR” (✱) key and using the up or down arrow keys. If there is already
aZero value present then add the new value to the one already present.
Thermometer = 60 °C Thermometer = 70 °C
Controller Reading = 65 °CController Reading = 65 °C
Subtract = -5 °C Subtract = +5 °C
Enter Zero value of -5 °C Enter Zero value of +5 °C
G. When the correct Zero value has been entered, press and hold the two
arrow keys together until the display again indicates the chamber
temperature. If the procedure was done correctly, the controller display
should now agree with the thermometer reading to within ±0.5ºC.
H. Allow the unit to run for at least 30 minutes.
I. Re-check the thermometer reading, the controller display and the thermometer
should agree to within ±0.5ºC. If not repeat steps D, E and F above.
15

SECTION 7
MAINTENANCE
B
E ADVISED:
NOTE: MAKE NO ATTEMPT TO SERVICE OR REPAIR A LAB-LINE PRODUCT UNDER
WARRANTY BEFORE CONSULTING YOUR LAB-LINE DEALER. AFTER THE WARRANTY
PERIOD, SUCH CONSULTATION IS STILL ADVISED, ESPECIALLY WHEN THE REPAIR MAY
BE TECHNICALLY SOPHISTICATED OR DIFFICULT.
IF ASSISTANCE IS NEEDED BEYOND WHAT THE DISTRIBUTOR CAN PROVIDE, PLEASE
CALL THE LAB-LINE CUSTOMER RELATIONS DEPARTMENT AT [phone] OR (800) 522-
5463. NO MERCHANDISE, HOWEVER, SHOULD BE RETURNED DIRECTLY TO LAB-LINE
WITHOUT PRIOR APPROVAL FROM LAB-LINE.
CAUTION: DISCONNECT PLUG FROM ELECTRICAL OUTLET BEFORE
ATTEMPTING ANY MAINTENANCE OR REPAIR OF THIS UNIT.
CHECKING CONTROLS:
• While using the unit, occasionally check that both control panel status lamps are
functioning as described in the previous OPERATION section.
• During normal operation, with controls properly set, the over-temperature status
lamp is not supposed to be functioning. If it is and continues to be lit after re-
calibration as described in the previous OPERATION section, follow the
procedures described in the upcoming TROUBLESHOOTING section to locate
the source of the problem.
CLEANING:
• Clean any spills immediately. Use only soap or mild detergent and water with a
soft cloth for cleaning. Do not use abrasives on the glass inner door. Refer to
following section for care of stainless steel surfaces.
• Wipe exterior with soft damp cloth as necessary to remove dust, fingerprints or
other smudges.
16

MAINTENANCE: (Con’t)
CARE AND CLEANING OF STAINLESS STEEL:
CAUTION: DISCONNECT UNIT FROM POWER SOURCE PRIOR TO CLEANING.
WE RECOMMEND QUALIFIED SERVICE PERSONNEL MUST PERFORM ALL
SERVICE.
WARNING: ELECTROLYSIS CAN DAMAGE STAINLESS STEEL. THIS
OCCURS WHEN AN OBJECT IS ALLOWED TO REST DIRECTLY ON THE
SURFACE OF STAINLESS STEEL, TRAPPING MOISTURE THAT BECOMES
OXYGEN-STARVED, BUT IS SURROUNDED BY WATER-CONTAINING
OXYGEN.
THE ALLOY CALLED STAINLESS:
Stainless steel is an alloy of steel with chromium and nickel that increase the
metal’s resistance to rust and corrosion. Yet, if not properly cared for, stainless steel can
rust and corrode.
Exposure to air provides the passivation, or oxide layer coating, for clean stainless
by producing a thin, durable chromium-oxide film that forms rapidly on the alloy surface
to give stainless its characteristic “stainless” quality. Also exposure of the surface to
other oxidizing environments can produce a passivating film or coating.
However, if free oxygen is not available due to scale or contamination buildup the
metal surface may become vulnerable to rusting and corrosion as well as pitting. But
maintaining neutral pH and conducting frequent cleanings with detergent and water can
obtain years of trouble-free service from stainless steel products.
SOME STAINLESS GUIDELINES TO CONSIDER:
Distilled water is recommended. Please note: if this water is very pure it may be
corrosive to stainless. When filling a bath or incubator, ALWAYS ADD 2 to 40 PPM
(20 TO 40 MG/LITER) DISODIUM PHOSPHATE OR SODIUM BICARBONATE,
ADJUSTING DOSAGE TO PROVIDE A pH VALUE OF 7 TO 9.
If not available, use clean, aerated soft tap water provided the total solids
concentration is <500 PPM.
WE DO NOT RECOMMEND USING 18 MEG OHM DEIONIZED WATER.
If this is the only source of treated water available—mix with regular tap water at
a 50/50 ratio.
THE pH FACTOR:
Check pH regularly. If pH is <6.0, add disodium phosphate to increase pH to a 7
to 9 value. Sodium carbonate or sodium bicarbonate may be used but they tend to form
scale that must be rinsed out regularly. If pH is >10.0, add sodium bisulfate to decrease
pH to a 7 to 9 value. Avoid adding harsh alkalines or acids since these may cause
localized corrosion and result in unstable pH.
SPECIAL CONSIDERATIONS:
WARNING: IF IT IS NECESSARY TO USE THE FOLLOWING CHEMICALS,
LIMIT EXPOSURE TIME TO A MAXIMUM OF 3 HOURS—ALWAYS CLEAN
SURFACES IMMEDIATELY AFTER USE.
17

M
AINTENANCE: (Con’t)
SPECIAL CONSIDERATIONS: (Con’t)
Chemicals that should be limited to a 3-hour maximum exposure time to stainless steel
are:
Aluminum chloride E.D.T.A. Potassium permanganate
Barium chloride Ferrous chloride Potassium thiocyanate
Calcium chloride Lysol Sodium hypochlorite
Chlorinated Lime Mercury salts Stannous chloride
Citric acid (boiling) Phenol Tartaric acid
Dakin’s solution
BE ADVISED: NEVER USE THE FOLLOWING ON STAINLESS STEEL:
Aqua regia
Ferric chloride
Iodine
Sodium acid
Sodium azide
Chemical spills, especially those agents listed here, should be removed as soon as
possible and the stainless steel surface cleaned with mild soapy water followed by a clean
water rinse.
CLEANSING AGENTS:
Anti-fungal and anti-bacterial additives are permissible to use as long as the pH of
the aqueous solution is kept within the range of 7 to 9. These are available through
laboratory distributors—but be sure to CONFIRM that they are not harmful to stainless
steel.
Do not use any metallic pads. Instead, for stubborn stains, use a plastic light-duty
cleansing pad and rub GENTLY in the direction of the metal grain.
If stains persist, use one of the following chemicals and methods.
CLEANING METHODS:
CAUTION: EXTREME CARE MUST BE TAKEN WHEN HANDLING THESE
MATERIALS. ALWAYS WORK IN AN AREA WITH ADEQUATE VENTILATION.
USE THE PRECAUTIONS AS OUTLINED IN THE MATERIAL SAFETY DATA
SHEET (MSDS) AND THE MANUFACTURER’S INSTRUCTIONS FOR THE
PRODUCT BEING UTILIZED. ALSO, FOLLOW THE PERSONAL PROTECTION
INDEX FOUND IN THE HAZARDOUS MATERIALS INFORMATION SYSTEM (HMIS)
SECTION OF THE MSDS.
NOTE: THE USE AND DISPOSAL OF THESE CHEMICALS MAY BE REGULATED BY YOUR
LOCAL CITY CODES; CONSULT THOSE REGULATIONS BEFORE DISPOSING OF THESE
MATERIALS.
• Any of a variety of “scale removers” available at local supermarkets or hardware
stores used for the cleaning of coffee marks, humidifiers or vaporizers.
18

MAINTENANCE: (Con’t)
CLEANING METHODS: (Con’t)
• A 15% to 35% phosphoric acid solution, available from laboratory supplies
distributors for scale and rust removal. Allow solution to soak the surface
affected until rust and scale is loosened. Immediately follow with a clean water
rise.
• Citric acid based cleaners.
• Bathroom tub and tile cleaners.
• A mixture of 20% nitric acid and 1.5% hydrofluoric acid (or hyrochloric acid).
Swab solution on surface allowing it to remain until rust is loosened.
Immediately follow with a clean water rise. This method should ONLY be used
if SEVERE rust and scale stains are present.
• Oxalic acid 2% to 5% in warm water. Swab solution on surface allowing it to
remain until rust is loosened. Immediately follow with a clean water rise. This
method should ONLY be used if SEVERE rust and scale stains are present.
Regardless of the approach utilized, ALWAYS follow the manufacturer’s
directions and allow the chemicals to do the cleaning with MINIMAL scrubbing.
Always follow cleanings with a clean water rinse. Air dry.
MATERIALS EFFECTIVE IN DISINFECTING:
• Glutaraldehyde
• Alcohol
BE ADVISED: THIS INFORMATION IS INTENDED AS GUIDELINES ONLY
AND LAB-LINE INSTRUMENTS, INC. MAKES NO CLAIM AS TO THE
SUITABILITY TO ANY PARTICULAR SITUATION. CONSULT YOUR STAFF
CHEMIST TO DETERMINE WHAT WOULD BE BEST FOR YOUR STAINLESS
STEEL PRODUCT AND LABORATORY.
19

SECTION 8
TROUBLESHOOTING
The following is intended as a guide to help in servicing this unit, if
problems should occur.
NOTE: BEFORE ATTEMPTING ANY REPAIR, DISCONNECT POWER CORD
FROM OUTLET.
NOTE: A QUALIFIED CONTROLS SERVICE TECHNICIAN MUST PERFORM
MAINTENANCE AND REPAIRS.
SYMPTOM POSSIBLE CAUSES OF PROBLEM
Power switch lamp Check that unit is plugged in and that the plug is good.
is not lit when the
power switch is ON: Press the power switch to OFF and then back ON. If the
lamp remains unlit, reset the back panel circuit breaker(s)
by pushing in the reset button(s).
Check the outlet to be sure power is available to the unit.
Power switch lamp is Using a screwdriver rotate the over-temperature thermostat
the only one lit when stem completely clockwise (to highest temperature
following the settings). If unit still does not heat up, the problem most
directions in the likely involves the heater status lamp. If the lamp is good,
previous OPERATION check the heaters and heater wiring.
section:
Convenience outlets Check that the other features of the unit are functioning. If
are not powered not, proceed with the first step listed above.
when unit is plugged
in: Remove any plugs from the convenience outlet(s). Press
in the circuit breakers (located on the back panel) to reset.
If the circuit breaker pops repeatedly, check the equipment
that is connected to the convenience outlet; check wiring
from circuit breaker to the convenience outlet.
20

SECTION 9
SERVICE GUIDE
NOTE: IT IS RECOMMENDED THAT QUALIFIED PERSONNEL PERFORM THE
FOLLOWING MAINTENANCE PROCEDURES AND REPLACEMENT OF PARTS
ONLY.
CAUTION: DO NOT ATTEMPT REPAIR OR SERVICE OF THIS UNIT BEFORE
FIRST REMOVING PLUG FROM ITS ELECTRICAL OUTLET.
HEATER REPLACEMENT:
Heaters should be replaced when the unit does not heat properly and
multiple meter measurements of resistance show a significant deviation from 144 ohms.
After unplugging the unit, move it out into an open area to provide easier access
to the back of the unit. Remove the back cover, then slide heaters out from their
positions under the floor and along the side-walls. Disconnect heater leads from the
terminals after carefully noting where the leads attach.
To re-install heaters, reverse the above procedure.
THERMOSTAT REPLACEMENT:
After unplugging the unit, remove the top cover of the unit to reach
control components. Expose 2 screws holding thermostat to the mounting bracket. After
removing thermostat from control panel, disconnect wiring while noting where each lead
attaches.
Remove back cover of unit to reach thermostat bulb, set in a bracket
under the chamber floor. Slide the bulb out of the bracket and through
the top hole to completely remove the thermostat.
Install new thermostat by reversing above procedure.
SWITCH OR STATUS LAMP REPLACEMENT:
Power switch and status lamps are snap-in mounting type.
Unplug unit, remove top cover and disconnect leads after noting where each
attaches. Push the switch out from the back. Slide the lamp body sideways to remove
lens. Reverse procedure to install new lamp.
Press replacement switch in from the front of the panel and then reconnect the
leads as noted. Switch is to be oriented so that the green lamp is toward the top.
REPLACING TEMPERATURE CONTROLLER:
1. Place ON/OFF switch in OFF position.
2. Unplug incubator from outlet power supply.
3. To remove controller from control housing:
• use both hands to firmly grip each side of the controller bezel
• press on the bezel side grips until the bezel tabs release
• slowly pull controller from housing
4. To install new, factory configured controller:
• Carefully slide new controller into controller housing.
NOTE: PCB contacts at rear of controller fit into contacts at rear of controller housing
• Press controller bezel into controller housing until bezel tabs securely lock controller
into place
5. Plug incubator into outlet power supply.
6. Place ON/OFF switch in ON position.
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