User Manual
Contents
1. by removing the circulation tray in 14 22 28 and 38 liter baths with slight loss of performance 6 3 Cooling C1G C2G Refrigerated cooler for use in liquids between 20 C and 40 C The cooling coil may be immersed in liquids up to 100 C but the cooler should not be switched on with liquid temperatures above 40 C Immersed material the cooling coil is nickel plated copper C1G C2G Cooling power 20 C 300 W 350 W 0 C 100 W 250 W Overall consumption 200 W 400 W Dimensions 410 285 225 mm 475 320 255 mm Flexible pipe length 925 mm 925 mm Coil diameter length 77 55 mm 75 105 mm Electrical supply 110 120 VAC or 220 240 VAC 220 240 VAC 7 MAINTENANCE AND SERVICE All Science Electronics laboratory products are designed to comply with IEC1010 1 and can be flash tested Some are fitted with radio frequency interference suppressors Therefore it is recommended that only a d c test is performed 16 7 1 Cleaning No routine maintenance is required For service obtain an RMA number remove the control unit and return to our service department DO NOT RETURN THE TANK OR BRIDGE PLATE The cases can be cleaned with a damp cloth after disconnection Do not use solvents The immersed parts can be cleaned using proprietary heating element cleaners CAUTION these may be toxic follow the cleaner manufacturer s instructions Before using any decontamination or cleaning me2. temperature to set temperature and at the same time rotate the knob to set the required operating temperature KA ZA set temperature Turn the knob to the required temperature lock with the lever Use a screwdriver for fine setting over the range 1 C 3 2 3 1 6 Alarm Lamp The alarm lamp red on the front panel illuminates when either the liquid level is low or the over temperature cut out has operated The low liquid level switch consists of a stainless steel float and switches the heating and stirring off if the liquid level falls When the alarm lamp is illuminated first check the liquid level and refill if necessary If it is still illuminated press the over temperature cut out knob If the alarm lamp does not got out set over temperature as described in 3 3 Set overtemperature knob Set overtemperature push to reset control The cut out operating temperature is adjustable If the liquid temperature rises above the cut out set temperature the heater and stirrer are switched off The cut out is re set by pressing the knob The front of the knob has a hole through which adjustment can be made with a screwdriver Filling Before filling the bath disconnect the power supply When the tank is fully loaded fill to a maximum level of 10 mm from the top with a liquid suitable for your working temperature Before filling the bath disconnect the mains power supply 30 to 30 C 50 water 50 antifreeze inhibited
3. the external circuit and that the tubing is suitable for the liquid temperature 2 3 Use at lower temperatures Due to heat input from the pump and stirrer motor the minimum operating temperature without accessory cooling depends on the size of the bath The smallest bath W6 has an operating temperature of approximately 15 C above ambient when used with a lid or 10 C above ambient without a lid The other baths can be used to within 5 C of ambient without accessory cooling For lower temperature operation accessory cooling is required This can be either a refrigerated cooler C1G or C2G or a water cooing coil CW5 The CW5 can be used either with a refrigerated circulator or tap water but when used with tap water it should only be used in accordance with local water supply regulations C1G is suitable for use with all W baths and when used with immersion thermostats TA or TD for tanks deeper than 150 mm C2G is suitable for use only with W28 and W38 baths and when used with immersion thermostats TA or TD for tanks deeper than 200 mm Note When using W baths at lower temperatures condensation may form as the tanks are not insulated CW5 coil can be used in any bath deeper than 150 mm 2 3 1 W6 tank Configure the lid for cooling coil and thermometer or cooling coil only as shown on figure 2 Position the C1G cooling coil in the tank so that the feed pipe passes through the slot Note The cooling coil is loca
4. SE Science Electronics 521 Kiser Street Dayton Ohio 45404 1641 937 224 4444 Fax 937 224 4434 E mail seusa vr net W Series Stirred Baths and Circulators KD amp KA Stirrer Controller ZD amp ZA Stirrer Controller TD amp TA Immersion Thermostats CG Refrigerated Immersion Coolers User Manual User Manual for W Series Stirred Baths Product Description W6 KD W6 6 liter bath tank KD Stirrer Controller W6 KA W6 6 liter bath tank KA Stirrer Controller W14 ZD W14 14 liter bath tank ZD Stirrer Controller W14 ZA W14 14 liter bath tank ZA Stirrer Controller W28 ZD W28 28 liter bath tank ZD Stirrer Controller W28 ZA W28 28 liter bath tank ZA Stirrer Controller W38 ZD W38 38 liter bath tank ZD Stirrer Controller W38 ZA W38 38 liter bath tank ZA Stirrer Controller The KD and ZD controllers have digital temperature display and and temperature setting The KA and ZA controllers have analog temperature setting TD KD controller fitted with B C clamp TA KA controller fitted with B C clamp The KD or KA controller can be fitted with a B C clamp to enable it to be used as an immersion thermostat on tanks with a capacity up to 50 liters C1G Use with all W baths C2G Use with W28 and W38 baths February 3 1999 2 CONTENTS Page T SAFETY ads EA is a 4 Z GETTING STARTED on tds ss Ghee as dr e dos Lol 6 2 1 UnpackINd 022622063200 dea e a a tia 6 2 2 Assembling control unit O 6 2 3 U
5. The raised shelves can be used with either end up in the bath to give different immersion depths The immersion depth can be adjusted by changing the quantity of liquid in the bath 4 3 Lids 4 3 1 Hinged lids LW14 LW28 and LW38 LW14 for W14 bath tank LW28 for W22 and W28 bath tanks LW38 for W38 bath tanks The pack contains Lid with upper part of hinge fitted 2 hinges lower half 4 screws To assemble Remove the 4 bungs from the side of the bath Attach the lower half of the hinges to the bath with the screws provided but do not tighten screws Position the lid on the bath and check that lid opens smoothly and is correctly lined up with the side of the bath before tightening screws 12 4 3 2 Stainless steel lids LS14 LS28 and LS38 lids Pitched lids LS14 for W14 bath LS28 for W22 and W28 bath LS38 for W38 bath These lids are supplied with the handle detached from the lid The pack contains Handle Adaptors 2 Screws 2 To Assemble Remove the protective film from the lid Pass two screws through the holes in the lid Thread the adaptors on to the screws so that the v cut fits over the ridge of the lid Hold the handle in position against the adaptors and fasten to the lid by tightening the screws 4 3 2 Polypropylene spheres PS20 Polypropylene spheres are an alternative to lids They minimize evaporation and heat loss allow easy access to vessels in the bath and are particularly useful for tall vess
6. a surface which is flammable Do not check the liquid temperature by touch Use the temperature display or an accessory thermometer gt Use only water or water glycol mix Do not use these liquids outside the specified temperature range If the alarm lamp is illuminated and water glycol mixture is being used the temperature of the liquid may be above its recommended maximum temperature DO NOT inhale the vapors given off from the hot liquids as they are TOXIC If water glycol mixture is heated above its recommended maximum discard safely and replace with new liquid Always use a lid or polypropylene spheres when operating above 60 C Take care when raising and removing the lid The lid may be hot Steam and hot vapors can cause scalding When working at high temperatures greater than 60 C reduce the risk of eye injury by using safety goggles or spectacles Before draining allow the liquid to cool to below 50 C Drain using a hand siphon pump SYI When pumping through or around external apparatus always use connecting pipe or hose suitable for the operating temperature and liquid used and check that the pipe connections are secure before switching on Do not disconnect any pipes or hoses while they contain hot liquid The bath should be used in a manner specified by this user manual otherwise the protection provided by the equipment may be impaired It is the user s responsibility to carry out any appropriate decon
7. els One package contains approximately 300 spheres e wz woe was Spheres Required 1X PS20 1X PS20 2 X PS20 2 X PS20 3 X PS20 4 4 Siphon SYI A Siphon SY1 can be used to drain the bath 13 5 FAULT DIAGNOSIS Symptom Possible Cause Action Required Unit does not operate Unit not switched on Switch On Power lamp off Unit not plugged into Plug in switch on power supply Fuse blown in the unit Check and replace Electrical power supply Check that other electrical failure appliances on the same circuit are working Alarm light on Overtemperature cut out Reset cut out as described in has operated 4 6 Temperature does not rise Set temperature is lower Check set temperature when expected than liquid temperature Temperature control circuit Have unit checked by technician fault Temperature continues to Set temperature is higher Check set temperature rise when not expected than liquid temperature Set temperature is too Raise the set temperature or close to ambient add accessory cooling Temperature control circuit Have unit checked by technician fault Stirrer motor does not rotate Stirrer or propeller Clear obstruction obstructed Pump obstructed Clear obstruction If stirrer motor shaft Have unit checked by technician rotates freely then motor thermal fuse may have blown 14 6 6 1 TECHNICAL SPECIFICATIONS This equipment is designed for indoor use in laboratory conditions with room tempe
8. ethylene glycol WARNING TOXIC Follow manufacturer s instructions For safe disposal consult your Local Environmental Health Office 0 to 30 C 80 water 20 antifreeze inhibited ethylene glycol WARNING TOXIC Follow manufacturer s instructions For safe disposal consult your local Environmental Health Office Use a lid to reduce the dilution of the mixture caused by condensing water vapor from the air and to maintain the cool down rate 5 to 80 C Water recommended temperature range Use a lid or polypropylene spheres above 60 C to reduce evaporation and heat loss 80 to 99 9 C Water can be used but care should be taken with its use as hot water vapor can be dangerous A lid or polypropylene spheres must be used At these temperatures the temperature control will be reduced due to localized boiling and there may be a large loss of water due to evaporation The control units should not be used to boil water 10 3 3 Note Both water from a drinking source and deionized water is suitable for use in the baths However some older deionizers can create concentrated salt solutions for a short time after the ionizer is rejuvenated This solution should not be used in the baths as it may cause corrosion 70 to 150 C Dow Corning silicone fluid DC200 20 Follow manufacturer s instruction For safe disposal consult your Local Environmental Health Office Switching on and setting up Connect the pump to your external c
9. ew the shaft extension into the tapped hole on the end of the shaft see figure 3 2 2 3 2 2 4 Remove the two knurled nuts see figure 4 from the bottom of the control unit and fit itonto the tank by locating the studs into the brackets on the tank Secure in position by refitting the two knurled nuts underneath When operating at temperatures greater than 90 C fit the HTS high temperature shield to the base of the unit by locating it on the fixing screws and the cooling coil support bracket Check that the circulation tray is correctly fitted with the larger gap between the edge of the tray and the end of bath under the control unit N B W6 has no circulation tray Immersion thermostats TD and TA Use of control unit KD and KA with B C clamp Turn the control unit upside down and remove the three small screws around the edge of the base Pass the coil through the hole in the B C clamp aligning the control unit so that the front faces away from the clamp knob Fasten the unit with the three screws If the tank is deeper than 150 mm remove the stirrer from underneath pump by removing the retaining M3 screw and screw the shaft extension with the propeller into the tapped hole on end of the shaft see figure 3 Clamp the controller to the side of your vessel Vessel can be used with a maximum wall width of 30mm Take care not to overtighten the clamp if you are attaching it to a glass vessel WARNING When using the immersion t
10. following safety precautions CAUTION Read this documentation fully before use and pay particular attention to sections containing this symbol CAUTION Some surfaces can become HOT during high temperature operation DO NOT CONNECT TO THE POWER SUPPLY OR SWITCH ON BEFORE FILLING THE TANK Only connect to a power supply with a voltage corresponding to that on the serial number label Connect the control unit only to a power supply which provides a safety ground terminal Connecting to an ungrounded power supply is potentially dangerous Before moving drain the bath and disconnect the power supply at the power supply socket Do NOT remove the IEC connector from the rear of the unit Y Ensure that the unit is positioned such that the power switch is easily accessible during use The ventilation slots on the rear of the unit must not be blocked or restricted Take care when topping off or draining as the liquid in the tank may be hot If the alarm lamp is illuminated take care as the liquid may be at boiling point DO NOT TOUCH the heater as it may be VERY hot When refilling the bath be very careful The heater may be hot and when cold water comes into contact with it the water can boil violently throwing off very hot droplets of water and scalding steam USE SAFETY GLASSES Ifthe alarm lamp is illuminated and the heater is not immersed in liquid DO NOT TOUCH IT it will be very HOT Do not place the control unit on
11. hermostat above 60 C use a tightly fitting lid around the controller The purpose of the lid is to prevent vapors from the hot liquid escaping to the atmosphere or being drawn into the controller with the cooling air Hot vapors should not be inhaled The lid also improves the heat up rate and reduces liquid evaporation Use of pump To use the pump remove the pump bypass molding and replace with the pump output molding see figure 4 Remove the two screws which hold the pump bypass molding to the control unit and fit the pump output molding Ensure that the two sealing O rings are correctly fitted into their grooves before fitting Retain the pump bypass with its larger O ring for refitting when the pump is no longer required Connect the outlet pipe marked with an upward arrow on the left hand pipe to the external circuit Connect the return pipe to the inlet pipe marked with a downward arrow Secure the pipes with clips z7 The pump will pump liquid around a closed external circuit which is one not open to the atmosphere It cannot be used for circulation through an external open tank The FH15 16 circulator or RRC range of refrigerated circulators can be used for this application When the pump is not required refit the pump bypass ensuring that the sealing ring is correctly fitted WARNING If the operating temperature is greater than 60 C ensure that the pipes are securely clamped to the pump outlet and to
12. ircuit if required Connect the control unit to a grounded electrical power supply with voltage and frequency within the range specified on the serial number plate DO NOT SWITCH ON BEFORE FILLING THE TANK Before switching on for the first time use a screwdriver to turn the set overtemperature control fully clockwise Press the knob to ensure that is reset Switch the power on and check that the power lamp is illuminated On analog units set the required operating temperature On digital units press the push to set C knob and rotate to set the required operating temperature Wait until the liquid temperature has stabilized at the operating temperature After the temperature has stabilized at the required set temperature set the overtemperature control as follows Turn the control counterclockwise using a screwdriver until the alarm lamp comes on Press the knob to reset it and turn the control slowly clockwise until the alarm lamp goes out This gives an overtemperature trip point of approximately 30 C above set temperature 11 4 ACCESSORIES 4 1 Test tube racks The following stainless steel test tube racks are available Bath Racks Tube Diameter Catalog Numbers Tank per bath or ve ia 08 16 VRA6 W22 24 mm QR 30 VR 30 4xve W38 0 5 ml u tubes QR SE VR SE 1 5 ml y tubes QR LE VR LE 4 2 Raised shelves Raised shelves RS14 RS22 RS28 and RS38 are available for W14 W22 W28 and W38 tanks respectively
13. rature between 5 C and 40 C and 80 relative humidity Performance figures quoted apply to equipment used in ambient temperature between 10 C and 35 C Heating TD ZD temperature setting range 30 C to 150 C ZD minimum operating temperature W6 W14 and W22 0 W28 and W38 15 C TA ZA temperature range 0 to 150 C With a suitable insulated tank and cooler the ZD and TD units can control liquid temperatures down to 30 C Stability DIN 58966 at 37 C 0 004 C Supply voltage range 220 240V 50 60Hz 110 120V 50 60Hz Power rating 230V 1 5 kW 115V 1 kW Heater power 230V 1 4 kW 115V 0 96 kW Overtemperature protection is by variable resettable overtemperature cut out Low liquid level is sensed by float switch Pump performance Max Head 1 7m Max Flow 8 5 lit min at zero head Pump bore 6mm This equipment is for indoor use and will meet its performance figures within an ambient temperature range 10 to 35 C with maximum relative humidity of 80 and is safe for use in an ambient temperature up to 40 C Heat up time in minutes from 25 C to 70 C with water and lid on 53 70 115 V 16 35 100 240v 25 15 6 2 W Series Bath Tanks O J w m e w 7 6 14 22 28 38 Tank Capacity L Tank Dimensions 300 150 150 325 300 150 505 300 150 505 300 200 690 300 200 l w d mm Liquid depth 80 140 70 130 70 130 120 180 120 180 min max mm Maximum depth can be increased by 10mm
14. se at lower temperatures 0 000 eee 8 3 OPERATION corsa RS Baa a Hoan ee RRs Foe 9 3 1 Controls and indicator lamps ooccoccocco 9 3 2 PUG NA 10 3 3 Switching on and setting up 0 0 2 ccc ee 11 A ACCESSORIES cuna Ae 12 4 1 Testtubetacks nat a os e a a o e a ge O 12 4 2 Raised sShelves 50 visitada aa rta e Y bend eed ae eek a Rd 12 4 3 PAS os a ARS A ASA ERAN 12 4 4 Siphon SYE soii re A A ae es 13 52 FAULT DIAGNOSIS i252 oid a we ete nea ita 14 6 TECHNICAL SPECIFICATIONS Lo 15 6 1 Heating 2 26 sendas rd a WOR ae Gate de ae Se 15 6 2 W Series Bath Tanks 0 00 eee 16 6 3 Cooling GAG C26 rie oa Gb gi ORS rd ds Seda ye 16 7 MAINTENANCE AND SERVICE 0 000 c cece eee eee eens 16 7 1 Cleaning 20h 205485 fand tak CORRE hd Ae A Met AA aed eee 17 Ta CIG C2G RN 17 7 3 Replacement of fuses 0 eee 17 8 WARRANTY enni noe yet A WR ame doth a ee Bee Ged eatin REC a 18 dr SERVICE a en eae es Mo q ein i es Ok AN A a 18 1 N gt SAFETY This equipment has been designed and constructed to comply with the electrical safety requirements of IEC 1010 1 safety requirements for electrical equipment for measurement control and laboratory use and IEC 1010 2 010 specification for laboratory equipment for the heating of materials These International Standards are also published as European EN 61010 and British BS EN 61010 standards Always obey the
15. tamination if hazardous material is spilled on or inside the equipment 2 2 1 2 2 GETTING STARTED Unpacking Remove the packing materials carefully and retain for future shipment or storage of the unit Packs should contain 2 1 1 KA KD ZA or ZD Controller Extension shaft with fitter propeller Pump pipe outlet plastic molding Two O rings Operating instructions 2 1 2 TA TD Immersion thermostat Clamp B C Extension shaft with fitted propeller Pump pipe outlet plastic molding Two O rings The operating instructions 2 1 3 Baths W6 bath with cover plate and lid W14 W22 W28 and W38 baths with circulation tray Assembling control unit 2 2 1 W6 KD and W6 KA Use of KD and KA control units with W6 tank Remove the cover from the W6 tank by removing the two waisted nuts on the underside of the cover Check that the float is free and that any tape is removed Fit the control unit to the cover using the three M3 screws supplied Refit the cover to the tank locating it on the two brackets and securing it with the two waisted nuts Fit the flat stainless steel lid supplied Select the combination of holes on the lid which is suitable for the application see figure 2 2 2 2 W14 ZD W14 ZA W22 ZD W22 ZA W28 ZD W28 ZA W38 ZD and W38 ZA Use of controller ZD and ZA with tanks W14 W22 W28 or W38 For use with W28 or W38 tanks remove the stirrer from underneath the pump by removing the retaining M3 screw Scr
16. ted in the working volume and therefore the unit can only be used for circulation 2 3 2 W14 W22 W28 W38 tanks 2 3 3 Remove the control unit from the tank and remove the small cover plate from the bottom of the unit M3 screw see figure 4 Place the coil in the tank and position the control unit so that the cooling coil fits over the coil support bracket and its feed pipe passes through the entry channel of the control unit For use with immersion thermostats Position the cooling coil in the tank ensuring that it is fully immersed Clamp it in position 3 OPERATION 3 1 Controls and indicator lamps 3 1 1 3 1 2 Power The power mains switch is located on the rear panel If the unit does not come on check whether the alarm lamp is illuminated see 3 1 6 Power lamp The power lamp green on the front panel indicates that the mains power supply is on Heater lamp The heater lamp orange on the front panel indicates when the heater is on While the bath is warming up the lamp is on continuously and it starts to flash as the temperature reaches set point When the unit is controlling at set temperature it flashes intermittently Temperature display The temperature display normally shows the temperature in C of liquid being controlled It displays set temperature when the push to set C knob is pressed Set temperature knob KD ZD push to set C Press knob to change display from liquid
17. thod except that recommended check with our Service Department or in other countries with our distributor that the proposed method will not damage the equipment 7 2 C1G C2G Cooling power will be reduced if the fins behind the grill become clogged with dust Examine monthly and if necessary use a vacuum cleaner to remove dust If still clogged contact a technician No other routine maintenance is required Disposal This unit contains refrigerant gas which must NOT be discharged into the atmosphere At the end of the units working life either have the gas removed safely by using refrigerant recovery equipment or return the unit to us for disposal 7 3 Replacement of fuses Disconnect the unit from the power supply socket Remove the IEC power plug from the rear of the unit Press down the drawer catch see figure 6 Pull out the fuse drawer check and replace with the correct fuses if necessary as follows 1 25 x 0 25 inch quick acting rated ZA ZD KA KD 220 240V 10AF 110 120V 15AF C1G 220 240V 5AF C2G 220 240V 10AF Replace fuse holder a7 2 WARRANTY When used in laboratory conditions and according to this user manual this equipment is warranted for THREE YEARS against faulty materials or workmanship SERVICE It is necessary that a Returned Materials Authorization RMA number and form be obtained before return of any Science Electronics product for any reason Contact us for more information Please be sure
18. to mark the outside of the returned goods package with this RMA number to ensure prompt handling Science Electronics Inc 521 Kiser Street Dayton OH 45404 1641 937 224 4444 Fax 937 224 4434 E mail seusa vr net 18 Power Lock Fine Temperature Control Set Temperature C Set Overtemperature C Push to Reset Set Overtemperature Control Push to Reset Digital Controller Figure 1 Identification of Controls 19 Cooling Coil amp Thermometer Cooling Coil Only Figure 2 Different configurations for W6 lid Extension Shaft PePropeller Figure 3 Stirrer Shaft Extension 20 TN Pump Bypass Cover plate of Sealing O Rings Entry Channel For Refrigeration Cooler Pipe Output Figure 4 Side View of Controller 21
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