Shelolab SWBC22 Bedienungsanleitung

WATER BATHS

MODELS: SWBC22 and SWBC22-2

Previously designated as

WPC65 & WPC65-2

MICROPROCESSOR CONTROLLED

INSTALLATION AND OPERATION MANUAL

Revised March 2, 2018

4861565

2 General Purpose Water Baths

These units are TUV CUE listed as water baths for professional, industrial or educational use where the

preparation or testing of materials is done at approximately atmospheric pressure and no flammable,

volatile or combustible materials are being heated. These units have been tested to the following

requirements:

CAN/CSA C22.2 No. 61010-1:2012

CAN/CSA C22.2 No. 61010-2-010 + R:2009

UL 61010A-2-010:2002

UL 61010-1:2012

EN 61010-1:2010

EN 61010-2-010:2003

IEC 61010-1:2010

IEC 61010-2-010:2003

Sheldon Manufacturing Inc.

P.O. Box 627

Cornelius, Oregon 97113

EMAIL: support@sheldonmfg.com

INTERNET: sheldonmanufacturing.com

PHONE: 1-800-322-4897 (503) 640-3000

FAX: (503) 640-1366

General Purpose Water Baths

TABLE OF CONTENTS

INTRODUCTION...........................................................................................................................................4

General Safety Considerations ........................................................................................................4

RECEIVING YOUR UNIT..............................................................................................................................5

Inspection Guidelines.......................................................................................................................5

Returning Shipment..........................................................................................................................5

GRAPHIC SYMBOLS....................................................................................................................................6

INSTALLATION.............................................................................................................................................7

Environmental Conditions ................................................................................................................7

Power Source................................................................................................................................... 7

Location............................................................................................................................................7

Lifting and Handling..........................................................................................................................7

Cleaning and Decontamination........................................................................................................7

CONTROLS OVERVIEW..............................................................................................................................8

Power Switch....................................................................................................................................8

Main Temperature Controller...........................................................................................................8

Fuses................................................................................................................................................ 8

Over Temperature Limit Thermostat (OTL) .....................................................................................8

Heating Activated............................................................................................................................. 8

Over Temperature Activated Light...................................................................................................8

OPERATION................................................................................................................................................. 9

Turning On the Unit..........................................................................................................................9

Setting Main Temperature Control...................................................................................................9

Calibrating the Main Temperature Control.......................................................................................9

Setting the Overtemperature Limit Thermostat.............................................................................. 10

Bath Cover Assembly.....................................................................................................................10

MAINTENANCE..........................................................................................................................................11

Cleaning.........................................................................................................................................11

Disinfecting..................................................................................................................................... 11

Heating and Water Level................................................................................................................11

Test-tube Racks............................................................................................................................. 12

TROUBLESHOOTING................................................................................................................................13

Service ...........................................................................................................................................14

PARTS LIST................................................................................................................................................15

UNIT SPECIFICATIONS.............................................................................................................................16

SCHEMATICS.............................................................................................................................................17

General Purpose Water Baths 4

INTRODUCTION

Thank you for choosing a general purpose water bath. These units are not intended for use at hazardous or

household locations.

Before you use the unit, read this entire manual carefully to understand how to install, operate, and maintain the unit

in a safe manner. Your satisfaction with the unit will be maximized as you read about its safety and operational

features.

Keep this manual on-hand so it can be used by all operators of the unit. Be sure all operators of the unit are given

appropriate training before you put the unit in service.

Note: Use the unit only in the way described in this manual. Failure to follow the guidelines and

instructions in this manual may be dangerous and illegal.

General Safety Considerations

Your water bath and its recommended accessories have been designed and tested to meet strict safety

requirements.

For continued safe operation of your water bath, always follow basic safety precautions including:

•Read this entire manual before using the water bath.

•Be sure you follow any city, county, or other ordinances in your area regarding the use of this unit.

•Use only approved accessories. Do not modify system components. Any alterations or modifications

to your water bath may be dangerous and will void your warranty.

•Always plug the unit’s power cord into a grounded electrical outlet that conforms to national and local

electrical codes. If the unit is not grounded, parts such as knobs and controls may conduct electricity

and cause serious injury.

•Do not connect the unit to a power source of any other voltage or frequency beyond the range stated

on the power rating overlay at the rear of the unit.

•Do not modify the power cord provided with the unit. If the plug does not fit an outlet, have a proper

outlet installed by a qualified electrician.

•Avoid damaging the power cord. Do not bend it excessively, step on it, place heavy objects on it. A

damaged cord can easily become a shock or fire hazard. Never use a power cord after it has become

damaged.

•Do not position the equipment in such a manner as to make it difficult to disconnect power cord or

coupler.

•Do not attempt to move the unit while in operation or before the unit has been allowed to cool.

Section

5General Purpose Water Baths

RECEIVING YOUR UNIT

Before leaving our factory, all units are packaged in high quality shipping materials designed to provide

protection from transportation related damage.

Once a unit leaves our factory, safe delivery becomes the responsibility of the carrier who is liable for loss

or damage to your unit. Damage sustained during transit is not covered under your unit warranty.

When you receive your unit, inspect it for concealed loss or damage to its interior and exterior. Should you

find any damage to the unit, follow the carrier’s procedure for claiming damage or loss.

Inspection Guidelines

Carefully inspect the shipping carton for damage. If the carton is damaged, report the damage to the

carrier service that delivered the unit.

If the carton is not damaged, open the carton and remove its contents. Verify that all of the following

equipment is included in the crate:

•One (1) water bath

•One (1) magnetic thermometer clip

•One (1) circulating rack

•One (1) power cord

Carefully check all packaging before discarding. Save the shipping carton until you are sure everything is

in order.

Returning Shipment

If you must return the unit for any reason, first contact your service representative for authorization. You

will be asked to provide the data plate information.

Once you have determined the unit is free from damage, locate the data plate at the back of the unit. The

data plate indicates your unit’s model number and serial number. Record this information below for future

reference.

Table 1. Data Plate Information

Model Number

Serial Number

Part Number

Voltage

Section

6General Purpose Water Baths

GRAPHIC SYMBOLS

Your unit is provided with a display of graphic symbols that should help in identifying user adjustable

components.

Table 2. Symbols

Symbol Identification

Indicates that you should consult your operator’s manual for further instructions.

Indique que l'opérateur doit consulter le manuel d'utilisation pour y trouver les instructions

complémentaires.

Indicates “Temperature”

Repère "température"

Indicates “Over Temperature Protection”

Signale un "dépassement de température"

Indicates “AC Power”

Repère "secteur AC"

I Indicates the power is “ON”

Repère de la position "MARCHE" de l'interrupteur d'alimentation

O Indicates the power is “OFF”

Repère de la position "ARRÊT" de l'interrupteur d'alimentation

Indicates “Protective Earthground”

Repère de la "terre de protection"

Indicates “Up” and “Down” respectively

Touches de déplacements respectifs vers le "HAUT" et le "BAS"

Indicates “Manually Adjustable”

Signale un élément "réglable manuellement"

Indicates “Potential Shock Hazard” behind partition

Signale un "risque potentiel d'électrocution" au-delà de la cloison.

Indicates “Hot Surface”

Signale une “surface à haute température”

Indicates “Unit should be recycled” (Not disposed of in land-fill).

Indique “l’appareil doit être recyclé“(Ne pas jeter dans une décharge)

Section

General Purpose Water Baths

INSTALLATION

Your satisfaction and safety require a complete understanding of this unit. Read the instructions

thoroughly and be sure all operators are given adequate training before attempting to put the unit in

service.

This equipment must be used only for its intended application; any alterations or modifications will void

your warranty. Local city, county, or other ordinances may govern the use of this equipment. If you have

any questions about local requirements, please contact the appropriate local agency. The end user may

perform installation.

Environmental Conditions

Under normal circumstances these units are intended for use indoors, at room temperatures between 18°

and 40°C, at no greater than 80% relative Humidity (at 25°C) and with a supply voltage that does not vary

by more than 10% from the data plate rating. This equipment should not be operated at an altitude

exceeding 2000 meters. Installation category is II, pollution degree 2. Customer service should be

contacted for operating conditions outside of these limits.

Power Source

Check the data plate for voltage, cycle, and ampere requirements. If matched to your power source, plug

the power cord into a grounded outlet.

Voltage should not vary more than ± 10% from the data plate rating.

These units are intended for 50/60-HZ application. A separate circuit is recommended to prevent damage

to the unit due to overloading or circuit failure.

Location

In selecting a location, consider all conditions that might affect performance, such as heat from radiators,

ovens, autoclaves, etc. Avoid direct sun, fast-moving air currents, heating and cooling ducts, and high

traffic areas. Allow a minimum of 10 cm between the unit and any walls or partitions that might obstruct

free airflow.

Lifting and Handling

These units are heavy and care should be taken to use appropriate lifting devices that are sufficiently

rated for these loads. Units should only be lifted from their bottom surfaces. Handles and knobs are not

adequate for lifting or stabilization. The unit should be completely restrained from tipping during lifting or

transport. All moving parts such as trays or covers should be removed during transfer to prevent shifting

and damage.

Cleaning and Decontamination

In the event hazardous material is spilled onto or into the equipment appropriate decontamination must be

carried out. If there is any doubt about the compatibility of decontamination or cleaning agents with parts

of the equipment or with material contained, please contact the manufacturer.

Units are cleaned at the factory, but not sterilized. Remove any racks if assembled and clean the bath

with a disinfectant that is suitable for your application. See Maintenance for cleaning instructions and

precautions.

Section

General Purpose Water Baths 8

CONTROLS OVERVIEW

This section provides an overview of the panel controls. See Figure 1 for an illustration of the panel

controls. Figure 1. Control Panel

Power Switch

The Green I/O (On/Off) power switch, located in the top right hand corner of the control panel, controls all power to

the unit. It must be in the Iposition to be ON and illuminated before any systems are operational. The on/off switch

must remain easily accessible at all times.

Main Temperature Controller

This control is marked TEMPERATURE and consists of the digital display and UP and DOWN arrow pads for

inputting set point temperatures and calibration.

Fuses

The fuses are located at the back of the unit within the fuse holders. The fuses act as a circuit breaker and will cut

off power to the unit if there is an electrical surge or malfunction. The fuses must be in place for the unit to operate.

Please contact customer service for more information.

Over Temperature Limit Thermostat (OTL)

This controller is marked “Set Over Temperature” and is completely independent of the Temperature Controller. The

OTL guards against any failure of the Temperature Controller that would allow the temperature to rise past set point.

If the temperature rises to the OTL set point, the OTL takes control of the heating element and allows continued use

of the water bath until the problem can be resolved or service can be arranged. The OTL is manually adjusted with a

screwdriver or coin so accidental adjustment cannot occur.

Heating Activated

This light is ON when the Temperature Controller has activated the heating element to reach and maintain set point.

Over Temperature Activated Light

This light is ON when the Over Temperature Safety Thermostat has been activated. Under normal operating

conditions this light should never be on.

Section

General Purpose Water Baths 9

OPERATION

Warning: These baths are not intended for use as acid baths. Use as an acid bath will cause severe

damage to bath components and void your warranty. Do not use deionized water, tap water,

or chemicals. USE DISTILLED WATER ONLY.

Attention : Ces bains d'eau ne sont pas conçus pour les acides. Utiliser un tel bain comme bain d'acide

l'endommagera gravement et annulera la garantie. Ne pas utiliser d'eau désionisée, d'eau

du robinet ni de produits chimiques. UTILISER EXCLUSIVEMENT DE L'EAU DISTILLÉE.

Turning On the Unit

To turn on the unit, perform the following steps:

1. Check power supply against unit serial plate; they must match.

2. Plug service cord into the electrical outlet. If supplied with a detachable cordset, plug the female end

into the unit inlet and the male plug into the power supply. Verify that units requiring a fuse have the

fuse installed in the power inlet.

3. Fill bath to your required depth with DISTILLED WATER. DO NOT USE TAP WATER, DEIONIZED

WATER, OR CHEMICALS. Normal depth is 5 ½ inches (14 cm), but depth must be at least 2 inches

(5 cm) over the bottom of the rack. Check water level frequently, add water to appropriate levels if

needed. At higher operating temperatures, or under circumstances where a cover cannot be used, it

will be necessary to check the water level more frequently.

4. Push the Main power switch to the ON position and turn the Over Temperature Safety Thermostat to

its maximum position, clockwise.

Setting Main Temperature Control

To enter set point mode on the control, push and release either the Up or Down arrow pad one time and

the digital display will start to blink from bright to dim. While blinking, the digital display shows the set

point that can be changed using the UP or DOWN arrow pads. If the arrow pads are not pressed for five

(5) seconds, the display will stop blinking and will revert to reading the actual temperature in the bath.

Allow at least two (2) hours for the temperature to stabilize.

Warning: If the tank boils dry while containing plastic ware, the plastic can melt. If you intend to use

test tube racks, remember that plastic coated wire racks may wear and expose metal that

can cause damage. Preferably, use all plastic racks.

Attention : Si la cuve vient à s'assécher tandis qu' elle contient des ustensiles en plastique, le plastique

risque de fondre. Si des râteliers à tubes à essais constitués d'une ossature métallique

gainée de plastique sont utilisés, prendre garde que le plastique peut fondre ou s'user et

découvrir des parties métalliques risquant d'endommager différentes pièces. Il est

préférable d'utiliser des râteliers à tubes entièrement en plastique.

Calibrating the Main Temperature Control

We recommend that you calibrate your unit once it has been installed in its working environment and the

chamber temperature has been stable at the set point for several hours.

Section

10 General Purpose Water Baths

1. Place a calibrated reference thermometer in the bath (a thermometer clip is provided with the

accessories package). (See Figure 2 for placement.) Allow the thermometer to reach temperature and

remain stable for one (1) hour.

2. Compare the reading on the reference thermometer with the temperature control display. If there is a

difference, put the display into calibrate mode by pressing both the Up and Down arrow pads at the

same time until the two (2) outside decimal points begin to blink.

3. When the decimal points are blinking, press the Up or Down arrow pad to adjust the display to match

the reference thermometer. If the arrow pads are not pressed within five (5) seconds the display will

revert to showing the temperature within the bath.

4. Allow the unit to stabilize again, and repeat calibration if necessary.

Setting the Overtemperature Limit Thermostat

To set the Over Temperature Limit Thermostat, perform the following steps:

1. Verify that the OTL was set to its maximum position to allow the water bath to stabilize.

2. Turn the OTL counterclockwise until the Safety indicator light turns on.

3. Turn the OTL clockwise until the Safety indicator light turns off.

4. Turn the thermostat clockwise again, two (2) of the smallest divisions on its scale past the point where

the indicator light went out. This will set the OTL at approximately 1°C above the Main Temperature

set point.

Figure 2. Thermometer Placement

9850563

Note: Water bath thermometer must be placed so that the bulb is always fully immersed. The thermometer

must not touch the sides or the bottom of the bath tank.

Bath Cover Assembly

To assemble the bath cover, perform the following steps:

1. Insert 2 (Item 4) self-tapping screws through the respective cover holes and into the holes in the

handle (Item 2), leaving the first self-tapping screw loose to assure proper alignment. See Figure 3.

Firmly fasten both screws into place. Do not over-tighten.

Figure 3. Bath Cover Assembly Step 1

Handle Part # 3800609

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