Thermo Scientific Precision WB159915 User manual

Precision™Water Bath
Catalog No.
WB159915,WB161015S,WB160025,WB160535,WB160635,
WB160745,WB160855,WB159910-33,WB161010S-33,WB160020-33,
WB160530-33,WB160630-33,WB160740-33,WB160850-33
LTM1599X1 • 7/8/08

Introduction..........................................................................................................................................................3
Safety Information ..............................................................................................................................................5
Alert Signals..................................................................................................................................................5
Specifications ......................................................................................................................................................7
Water Bath Models Available........................................................................................................................7
Unpacking and Installation ..................................................................................................................................8
Packing List ..................................................................................................................................................8
Assembly and Installation ............................................................................................................................8
Repositioning the Control Panel ..................................................................................................................9
Filling the Unit ............................................................................................................................................10
Controls and Indicators ..............................................................................................................................10
Operation ..........................................................................................................................................................12
Power Up ....................................................................................................................................................12
Setting the Temperature Units to ºF or ºC ................................................................................................13
Setting the Temperature Setpoint ..............................................................................................................13
Setting the Safety Temperature ..................................................................................................................14
Calibrating the Unit ....................................................................................................................................14
Emptying and Cleaning the Unit ................................................................................................................15
Troubleshooting ................................................................................................................................................16
Replacement Parts............................................................................................................................................17
Schematics........................................................................................................................................................18
Warranty ............................................................................................................................................................20
2
Table of Contents

3
Congratulations on your new Thermo Scientific Precision
Water Bath.
Precision Water Baths offer the versatility needed to han-
dle virtually any clinical laboratory procedure — incuba-
tion, inactivation, agglutination — as well as most serolog-
ical, pharmaceutical, biomedical, and industrial proce-
dures.
These water baths are available with chamber capacities
of 2, 5, 10, 20, and 28 liters. The 2 liter unit is available
configured with either a standard or shallow chamber.
Also, a dual chamber unit is available with 5 and 10 liter
chambers, with independent controls for each. All units
are available to operate from either 120 or 230 volts.
The baths work equally well with water or bath oil as the
medium. All models offer the same temperature ranges:
ambient to 60°C without the supplied cover, and ambient
to 100°C with the cover in place (within physical limita-
tions).
These baths are microprocessor controlled for precise
temperatures and reliable, trouble-free operation. Dual
thermostats — one controlling the set point temperature
and the other operating as a safety — virtually eliminate
the possibility of overheating. Although not designed to
operate dry, the bath will not be damaged if it is allowed
to run dry.
An energy-saving removable cover helps to reduce evap-
oration while helping to maintain a uniform, constant tem-
perature. The cover also allows the water bath to reach
higher temperatures. The hinged, see-through gable
cover features unique “fins” that keep hands away from
hot vapors for easier, safer opening. The cover stays
open at the 90° position or, because of its quick-attach
hinge, can be lifted off completely to accommodate large
glassware.
A plastic rim remains cool to the touch even when operat-
ing the bath at maximum temperature.
The unit features a power-on self-test of vital circuitry.
This test will automatically be performed each time you
turn on the unit. If problems are detected, the system will
indicate a warning message on the display.
Introduction

4
The calibration of the water bath can be adjusted to opti-
mize its accuracy for the temperature that is used most
often in your application. This can be accomplished
through a simple procedure accessed from the front
panel.
As a convenience, a drain pump is supplied with 10, 20,
28, and dual 5/10 liter models.
All controls are conveniently located on the front panel for
easy access. To assure set point security, the tempera-
ture can only be changed by entering a specific set menu
first. This ensures that the set point cannot be accidental-
ly altered during extended or unattended operation.
To allow you to change the configuration of some units,
and to permit easy servicing, your water bath provides
front service access to the controller without having to
empty the bath.
The water bath features corrosion resistant construction
throughout to withstand the rigors of daily lab use.
INTRODUCTION

5
These instructions contain important operating and safety
information. The user must carefully read and understand
these instructions before using the water bath.
Your unit has been designed to optimize function, reliability,
safety, and ease of use. It is the userʼs responsibility to install
the bath in conformance with local electrical codes.
To avoid electrical shock, always:
• Connect the water bath to a properly grounded elec-
trical outlet of the correct voltage and current han-
dling capacity. Check the nameplate on the back of
the unit for the voltage and current rating.
• Disconnect the unit from the power outlet prior to
maintenance and servicing. Note: 230V units are
double pole, neutral fusing.
To avoid personal injury:
• Do not use in the presence of flammable or com-
bustible materials; fire or explosion may result. This
device contains components which may ignite such
materials.
• Do not remove or modify the grounded power plug.
Use only properly grounded outlets to avoid a shock
hazard. This unit is not rated for use in hazardous
atmospheres.
• Do not continue to operate the bath if the tempera-
ture control fails (displays an “E” code or controls
erratically) or the backup control fails (red safety
light glows continuously when turned completely
clockwise or fails to light when turned completely
counterclockwise).
• Select a fluid that is not corrosive and is not flamma-
ble. The following fluids are not recommended and
may damage the unit:
- Chlorides or bleach.
- Strong concentrations of any acid.
- Strong concentrations of any salt.
- Weak concentrations of hydrochloric acid, hydroflu-
oric acid, hydrobromic acid, hydroiodic acid, sulfuric
acid, or chromic acid.
Safety Information
Warning
Warnings alert you to a possibility of
personal injury.
Caution
Cautions alert you to a possibility of
damage to the equipment.
Note
Notes alert you to pertinent facts and
conditions.
Hot Surface
ot surfaces alert you to a possibility of
personal injury if you come in contact
with a surface during use or for a period
of time after use.
Alert Signals

6
- Weak salt solutions containing sodium chloride,
calcium chloride, chromate or chromium com-
pounds.
- igh Purity water (distilled water, deionized water,
reverse osmosis, etc.)
- Most photographic solutions.
• Do not use a flammable liquid. A fire hazard may
result. This unit is not explosion proof. Unit contains
components which may ignite such materials.
• Use appropriate hand and eye protection when han-
dling hazardous chemicals.
• The interior of the unit can reach temperatures that
can cause burns. Avoid contact. The unit can remain
hot without visual indication for some time after
power is turned off.
• If you will use the water bath with any liquid that will
give off fumes, be sure to operate the water bath in
a fume hood or with proper ventilation.
• Use the cover to reduce evaporation and to permit
reaching higher temperatures.
• ot liquids pose a burn hazard. Be careful not to
reach into the bath when it contains hot liquids. Also
be careful of steam rising from hot liquids.
• The unit is intended to be operated with liquid in the
chamber. owever, it will not be damaged if it tem-
porarily runs dry unless ignited by melting sam-
ples/plastic in the bath.
• Do not use in highly corrosive atmospheres; corro-
sive fumes and spillage may damage the unit and its
internal components, creating a shock hazard.
• Fumes from acidic solutions cause corrosion of the
stainless steel reservoir. Care should be taken to
maintain a neutral p at all times.
• Refer servicing to qualified personnel.
• Do not place containers directly on bottom of cham-
ber. Bottom can get extremely hot if no liquid is in
the chamber. Always use the 1diffuser tray.
SAFET INFORMATION

These are nominal specifications. We reserve the right
to change specifications or designs at any time without
incurring obligation.
Power requirements 120 VAC or 230 VAC ± 10%,
50 or 60 z
Ambient conditions +4ºC to +35ºC, up to 75%
relative humidity
Temperature range Cover open: Ambient to 60ºC;
Cover closed: Ambient to
100ºC
Control ±0.1ºC Between ambient and 100ºC
Uniformity ±0.24ºC at 37ºC
Stability ±0.5ºC at 37ºC
*Max altitude 2000m
*Over Voltage Category II (IEC 664)
*Pollution Degree 2 (IEC 664)
*CE Products meet the relevant EC harmonized stan-
dards for safety (IEC1010-1/EN61010 and EMC
(EN55014, EN55104, EN61000-4-2, -4-4, -4-6, -4-11
and ENV50140.)
* Applies to 230V units only
7
Specifications
Water Bath Models Available
Capacity/Type Model No. 120 VAC 230 VAC
2 liter 202 WB159915 WB159910-33
Single chamber SS LID
2 liter 202S WB161015S WB161010S-33
Single chamber SS LID
shallow
5 liter 205 WB160025 WB160020-33
Single chamber SS LID
10 liter 210 WB160535 WB160530-33
Single chamber SS LID
5 and 10 liter 215 WB160635 WB160630-33
Dual chamber SS LID
20 liter 220 WB160745 WB160740-33
Single chamber SS LID
28 liter 228 WB160855 WB160850-33
Single chamber SS LID

8
The water bath is shipped in a single carton. When
unpacking the unit, check each loose item against the
packing list below. Should a shortage exist, notify your
Thermo Scientific branch or representative, identifying the
part by name and catalog number.
Packing List
Qty Item Supplied
1 Water Bath
1 Cover Assembly
1 Diffuser Tray
1 Thermometer Clip and Grommet
1 Siphon Pump (10, 20, 28, & dual 5/10 only)
1 Instructions
1 Warranty Card
Assembly and Installation
Follow these steps to assemble and install the
water bath before operation:
1. The location must:
• Be indoors.
• Provide an adequate source of power. Check
the label on the back of the unit for voltage and
current requirements.
• Provide adequate clearance to insert samples.
• Be level, fixed, and capable of supporting the
weight of the unit when filled with liquid and
samples.
• Be free of drafts and wide ambient tempera-
ture variations such as near a heater or air con-
ditioning vents.
• Provide a fume hood if hazardous fumes are
anticipated when using the water bath.
• Be convenient to a sink for filling and draining
the water bath.
Unpacking and Installation
Note
If there is shipping damage, keep the
entire shipment intact-retaining the
carton and all packing material-and
file a claim with the final carrier.
Usually the firm will send an investi-
gator to ascertain liability.

9
2. Install the cover by inserting the hinge into the lip at
the rear of the bath. Angle the cover up while push-
ing down to lock the hinge in place under the stain-
less steel tank lip. Remove the cover by lifting the
lid and pushing the hinge towards the back to
release it from under the tank lip. Covers on the 2
liter shallow, 5 liter, and 10 liter model baths can
also be installed and removed by sliding the hinge
into place under the rim and tank lips from either
side.
3. Connect the line cord to a suitable grounded electri-
cal outlet.
Repositioning the Control Panel
With 20 and 28 liter units, the control panel can be positioned
on the side or the front of the unit in order to achieve the best
use of available bench space. To change the position of the
control panel, follow these steps:
1. Turn off the unit and disconnect from power source.
2. Allow to cool.
3. Remove thermometer and clip. Remove the cover.
4. Assuming that the water bath is empty, turn it over
on a protected surface.
5. Remove two screws retaining the control panel and
two screws retaining the blank panel.
6. Remove the blank panel.
7. Carefully move the control panel to the new location
and reinstall.
8. Install the blank panel at the other location.
9. Return unit to location of use.
10. Reconnect power, turn on and test unit.
Note
This procedure applies to 20 and 28
liter units only.
Note
Do not disconnect internal wiring or
sensors from control panel.
UNPACKING AND INSTALLATION

10
Filling the Unit
Follow these steps to fill the unit in preparation for use:
1. Fill the water bath with tap water or oil so that
the liquid level is approximately 1 1/2 inches
(3/4 inch with 2 liter shallow model) from the top
of the tank when full anticipated load is placed
in bath.
2. If a thermometer is used, use the clip provided
to hold the thermometer to the side of the bath.
Slide the O-ring on the thermometer to position
the thermometer to the proper depth.
3. When closing the cover, place the thermometer
along the front edge. A notch along the front of
the cover clears the thermometer and clip with
the cover closed.
4. For optimum results, the same fluid level should
be maintained throughout the operating period.
5. If using water, algicide may be added to reduce
algae formation. Follow the instructions supplied
with the algicide.
Controls and Indicators
All controls and indicators are located on the
front panel for ease of operation.
Power on/off: Controls line power to unit. Set to
1 position to turn on power, 0 position to turn off
power.
ºF or ºC: Shows whether temperature is being
displayed in Fahrenheit or Centigrade.
Display: During standby shows actual tempera-
ture; during setups, shows menu modes and
values being selected.
Alarm: Lights to show that the backup controller
is regulating the temperature rather than the pri-
mary controller.
Note
If the bath has been used previously,
the tank should be thoroughly
cleaned before refilling.
Note
The water bath, full of water (within 1-
1.5" of top of tank), with lid, is
designed to reach 37ºC in less than
60 minutes or 90ºC in less than 180
minutes.
UNPACKING AND INSTALLATION

11
Program: Lights to show that unit is in program
mode rather than run mode; see menu below.
Heat: Lights to show when heat is being sup-
plied to the chamber; cycles on and off as heat
is requested by the controller.
Menu: Allows you to select the mode of opera-
tion. Each time you press the Menu button, the
mode changes in this sequence:
• Select temperature units in ºC or Fº(display
shows _C_F).
• Calibrate the unit (display shows CAL).
• Display the actual temperature of the chamber
(normal mode of operation).
• The unit will return to normal operation, dis-
playing the actual temperature, if you do not
touch any control for a few seconds.
Set: When in the normal mode of operation,
allows you to change the temperature setpoint.
When in the _C_F mode, allows you to change
the temperature units displayed. When in the
CALibration mode, allows you to set the temper-
ature offset to calibrate the unit.
Increase: After entering other than normal
mode, increases the displayed value.
Decrease: After entering other than normal
mode, decreases the displayed value.
Safety controller: Sets the Limit temperature
above to the primary setpoint; should be set at a
higher temperature than the setpoint to give the
safety control in the event that the primary con-
trol fails.
Note
The safety control is not as accurate a
control as the digital control.
UNPACKING AND INSTALLATION

12
Follow these procedures for the operation of the unit,
including:
•Power up and initial indications.
•Setting the temperature units in ºF or ºC.
•Setting the temperature setpoint.
•Setting the backup temperature.
•Calibrating the unit.
•Emptying and cleaning the unit.
Power Up
Follow these steps to turn on the unit to prepare it for use:
1. Set the power switch to the ON position. The
unit will go through a power-on self test that will
take several seconds. During this time the dis-
play will show the unitʼs capacity in liters.
2. When the unit has completed its self-test, it will
maintain the bath at the last setpoint tempera-
ture. The eat indicator will light when the unit is
applying heat to the bath. This indicator will
cycle on and off during normal operation.
3. When the display shows normal operation after
completing the self-test, continue by setting the
temperature setpoint and backup temperature.
4. If the display shows any message after complet-
ing the self-test, do not use the unit. Refer to the
Troubleshooting section to determine what is
causing the message to appear on the display.
Operation

13
Setting the Temperature Units to
ºF or ºC
Note which indicator is lit to the left of the display, either F for
Fahrenheit or C for Centigrade. If the desired indicator is lit,
omit this procedure. To change the temperature units, follow
this procedure:
1. Press Menu button so display shows _C_F. Press
and hold the Set while simultaneously pressing the
Increase or Decrease button until the display shows
the desired temperature units, C for Centigrade or F
for Fahrenheit.
2. Release all controls. Within a few seconds, the dis-
play will return to normal operation. The desired indi-
cator (F or C) should be lit to the left of the display.
Setting the Temperature Setpoint
Follow these steps to set the controller so that
it maintains the desired temperature:
1. Turn Safety controller knob fully clockwise.
2. Press and hold the Set button to see the current set-
point. The Program indicator illuminates to show that
this is the setpoint. If this setpoint is correct, there is
no need to change the setting. The display will
return to normal operation when the Set button is
released, displaying the actual temperature.
3. To change the setpoint, press and hold the Set but-
ton while simultaneously pressing the Increase or
Decrease button. The display shows the tempera-
ture setpoint as you change it. Release the Set but-
ton when you have achieved the desired setting.
The display will return to normal operation within a
few seconds, displaying the actual temperature.
4. To check the setpoint without affecting normal oper-
ation, press the Set button at any time. To change
the setpoint, repeat step 3 above.
5. Set the Safety temperature according to the proce-
dure below.
OPERATION
Note
If Alarm Light comes on during nor-
mal cycling, turn backup controller
knob slightly clockwise and monitor.
(If backup and digital controls over-
lap, the bath will have a wider tem-
perature control band.)

Setting the Safety Temperature
Follow these steps to set the water bath Safety tempera-
ture controller.
1. Set the Temperature set point 2 to 5 degrees
higher than desired temperature. Wait until bath
temperature stabilizes as shown by displayed
actual temperature.
2. Turn backup controller knob counterclockwise
until Alarm light just comes on. Turn the knob
clockwise slightly until the light goes off.
3. Set the digital set point 5 degrees higher and
verify the Safety is controlling 2 to 5 degrees
above desired set point.
4. Set the Temperature control down to desired
temperature, allow the temperature to drift
down, and verify the alarm light does not come
on. If the light does come on, go back to step 1
setting the Safety higher.
Calibrating the Unit
To check the accuracy of the unit, clip a certified ther-
mometer (not supplied with water bath), to the side of the
bath as described in the installation instructions. After
allowing sufficient time for the temperature to stabilize,
compare the thermometer reading to the actual tempera-
ture displayed on the unit. If the displayed temperature
does not agree with the thermometer, you can calibrate
the controller as follows:
1. Note the difference between the displayed tem-
perature and the thermometer. For example: If
the displayed temperature is 37 and the ther-
mometer reads 36, the difference is -1, meaning
that the display should read 1 lower than it now
shows.
2. Press Menu button until display shows CAL.
3. Press and hold the Set button while simultane-
ously pressing the Increase or Decrease button
to set the desired temperature offset. Release
14
OPERATION

15
the Set button when you have achieved the
desired setting. The display will return to normal
operation within a few seconds, displaying the
actual temperature.
In the example above, you would set the display
to read -1.
Emptying and Cleaning the Unit
Please be advised that stainless steel can and will rust if
not regularly cleaned and properly maintained. It is rec-
ommended that the bath be cleaned at least on a monthly
basis for moderate or continuous use applications. Follow
these steps to empty and clean the unit after using it:
1. Turn off power, unplug the unit, and allow to
cool completely.
2. If you have a water bath of 2 or 5 liter capacity,
pour the liquid from the unit into an appropriate
disposal container.
3. If you have any other size water bath, allow the
unit to cool and use the hand pump to empty the
unit into an appropriate disposal container.
4. Clean the inside of the water bath with mild
detergent (such as Joy dishwashing detergent)
and warm water. Do not scrub any surface with
steel wool. (Steel wool leaves small metal parti-
cles behind that will rust, causing the pan to
look rusty). In instances where a heavy coating
of residue has accumulated inside the tank or
where there is evidence that corrosion is begin-
ning, the use of a stainless steel cleaner (such
as 3M Stainless Steel Cleaner and Polish) is
recommended.
5. Rinse and wipe all tank surfaces with clean
water.
6. Unit is now ready for next use.
Note
The temperature offset can be set up
to a range of 5.5ºC or 10.0ºF.
OPERATION

16
If you have problems using the unit, follow these general procedures to track down the cause from the symp-
toms you are experiencing. If an error message appears on the display, refer to the specific error in this chart.
If the problem is not resolved using the table below, contact Technical Support at 1-800-553-0039.
Problem Possible Cause
No power indication Unit not plugged in; no power at the outlet; incorrect power (make
sure outlet matches label on back of unit); defective power cord;
defective power switch or fuse (s) (call Technical Support).
No heating Setpoint or backup not set properly; defective heater or controller
(call Technical Support).
Always heating Defective controller (call Technical Support).
Very slow heating of samples Empty tank or extremely low liquid level in tank (add liquid to the tank
to improve heating).
Unit heating up slower than Defective controller (call Technical Support).
normal
Alarm light on constantly Setpoint or backup not set properly; defective primary controller
(call Technical Support).
Display not correct Temperature F or C set in error; temperature not calibrated (perform
calibration procedure with thermometer); defective controller
(call Technical Support).
Erratic operation Broken internal electrical connection; defective heater or controller
(call Technical Support).
Error Message: E1 Failure of temperature sensor or controller (call Technical Support).
Error Message: E2 Failure of controller (call Technical Support).
Display shows LLLL at power-up Wrong voltage; controller not set up properly (call Technical Support).
Troubleshooting

17
Item Part No.
Cover, 2 liter Stainless Steel Lid 15-462-32
Cover, 2 liter shallow and 5 liter Stainless Steel Lid 15-462-33
Cover, 10 liter Stainless Steel Lid 15-462-34
Cover, 20 and 28 liter Stainless Steel Lid 15-462-35
inge, lid (for 2 liter) SPN102383
inge, rim (for 2 liter) SPN102384
inge, lid (for all except 2 liter) SPN102386
inge, rim (28L and Dual Models) SPN102387
inge, rim (for 2S, 5, 10 & 20 liter) SPN102459
Clip, thermometer (for 2L shallow) SPN102423
Clip, thermometer (all except 2LS) SPN102424
Microbicide, 8 oz. Bottle 13-641-337
Pump, Siphon SPN102391
Controller PC board (120V) SPN102419
Controller PC Board (230V) SPN104068
Display PC board SPN102420
Controller, safety SPN102499
Sensor, RTD SPN102331
Diffuser Tray, 2 liter SPN102352
Diffuser Tray, 2L shallow or 5 liter SPN102353
Diffuser Tray, 10 liter SPN102354
Diffuser Tray, 20 or 28 liter SPN102355
Fuse, Type 3AG 1.25x.25, 10 Amp SPN45920
Fuse, 5x20mm, F5A, 250V SPN102487
Replacement Parts

18
Schematics

19

20
One Year Limited Warranty
This Thermo Scientific product is warranted to be free of defects in materials and workmanship for one (1)
year from the first to occur of (i) the date the product is sold by the manufacturer or (ii) the date the product is
purchased by the original retail customer (the “Commencement Date”). Except as expressly stated above, the
MANUFACTURER MAKES NO OT ER WARRANTY, EXPRESSED OR IMPLIED, WIT RESPECT TO T E
PRODUCTS AND EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES, INCLUDING BUT NOT LIMITED
TO, WARRANTIES OF DESIGN, MERC ANT ABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
An authorized representative of the manufacturer must perform all warranty inspections. In the event of a
defect covered by the warranty, we shall, as our sole obligation and exclusive remedy, provide free replace-
ment parts to remedy the defective product. In addition, for products sold within the continental United States
or Canada, the manufacturer shall provide free labor to repair the products with the replacement parts, but
only for a period of ninety (90) days from the Commencement Date.
The warranty provided hereunder shall be null and void and without further force or effect if there is any (i)
repair made to the product by a party other than the manufacturer or its duly authorized service representa-
tive, (ii) misuse (including use inconsistent with written operating instructions for the product), mishandling,
contamination, overheating, modification or alteration of the product by any customer or third party or (iii) use
of replacement parts that are obtained from a party who is not an authorized dealer of Thermo Scientific prod-
ucts.
eating elements, because of their susceptibility to overheating and contamination, must be returned to the
factory and if, upon inspection, it is concluded that failure is due to factors other than excessive high tempera-
ture or contamination, the manufacturer will provide warranty replacement. As a condition to the return of any
product, or any constituent part thereof, to the factory, it shall be sent prepaid and a prior written authorization
from the manufacturer assigning a Return Materials Number to the product or part shall be obtained.
IN NO EVENT S ALL T E MANUFACTURER BE LIABLE TO ANY PARTY FOR ANY DIRECT, INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, OR FOR ANY DAMAGES RESULTING FROM
LOSS OF USE OR PROFITS, ANTICIPATED OR OT ERWISE, ARISING OUT OF OR IN CONNECTION
WIT T E SALE, USE OR PERFORMANCE OF ANY PRODUCTS, W ET ER SUC CLAIM IS BASED ON
CONTRACT, TORT (INCLUDING NEGLIGENCE), ANY T EORY OF STRICT LIABILITY OR REGULATORY
ACTION.
For the name of the authorized Thermo Scientific product dealer nearest you or any additional information, contact us:
2555 Kerper Blvd., Dubuque, Iowa, 52004-0797
Phone: [phone] or 1-800-553-0039
Fax: [phone]
Web: www.thermo.com