OPERATING INSTRUCTIONS FOR: MODEL: BL-30 & BL-130 REFRIGERATED BATH Thermoline Scientific Equipment Pty. Ltd. ABN 80 000 859 129 10-12 Ross Place Wetherill Park NSW 2164. P.O. Box 1851 Wetherill Park DC NSW 1851 Phone: (02) 9604 3911 International: 61 2 9604 3911 Fax: (02) 9725 1706 International: 61 2 9725 1706 Email: thermoline@thermoline.com.au Web: www.thermoline.com.au
Introduction: Thank you for selecting this equipment from the large range of products manufactured & imported by Thermoline Scientific. This manual covers the operation, cleaning, & maintenance instructions for this equipment. Incorrect operation or use can cause harm or damage to the equipment, therefore it is very important that you read, understand, and implement the instructions, to ensure reliable operation. Please keep this manual in a safe place for future reference. LIST OF CONTENTS: INTRODUCTION: 2 LIST OF CONTENTS: 2 UNPACKING: 2 USE AND FUNCTION: 2 & 3 LOCATION & INSTALLATION: 3 & 4 Location: Level: Mains connection: Water supply & connection of external circuit: OPERATION: 4, 5, &6. Controls: Changing the temperature: CLEANING & MAINTAINANCE: 6 & 7 Calibration: 7,8 & 9 WARRANTY: 9 & 10 UNPACKING: Remove the equipment from the packing material and check for damage. Notify the detail of any damage to your supplier or to Thermoline Scientific without delay. Retain the packing materials until the equipment has been thoroughly tested. USE & FUNCTION: This precision circulated bath is ideal for applications where low temperature liquid is required, with a pump-out facility for liquid to be circulated through an external closed circuit. Operating temperature range is -5ºC to 100ºC. These baths will operate from a standard 240 volt, 50Hz, general purpose outlet (power point). BL-30L uses a 10 amp outlet, and the BL-130L uses a 15 amp outlet. Cooling is by means of a hermitically sealed refrigeration unit using environmentally friendly refrigerant. 26-1-16 2
Features: Wide temperature range: -5ºC to +100ºC Built in heating and cooling systems. Drain valve for easy cleaning and changing of fluid. Pump out facility allows for closed loop heat exchange operation. 9 or 20 litre tank capacity. LOCATION & INSTALLATION: Location: All refrigerated equipment generates heat as part of the normal operation. It is vital for correct performance and reliability that adequate ventilation is provided to allow this heat to dissipate. Any refrigerated equipment that is operated in a small unventilated area, especially in warm weather, can cause the compressor to overheat and may result in premature failure. NOTE: Failure to observe ventilation guidelines will void the manufacturer s warranty! You will notice that there are ventilation slots on all sides of the base of the bath, make sure that none of these vents are blocked to ensure adequate air flow to dissipate heat generated by the refrigeration unit. Level: The refrigerated bath should be standing on firm level surface. Note: Because of the size the BL-130 is fitted with castors to allow for easy movement. Push down the tabs on the castors to restrict movement once the bath is in place. Mains connection: This bath is suitable for connection to a standard 240 volt, 50Hz, supply. A dedicated outlet should be used for the supply, do not use power boards or the like. A 3- pin moulded plug is fitted as standard to the mains lead. BL-30L uses a 10 amp outlet, and the BL-130L uses a 15 amp outlet. Water supply: The water bath should be filled with liquid to within 40mm of the top. This will ensure that the float switch safety device is covered (the heating will not work until the float switch is covered). CAUTION: When working at a temperature below +5 C, add an antifreeze such as Ethylene Glycol at the following rate: Range: +5 C to 5 C 15% Ethylene Glycol 26-1-16 3
Connection of external water fluid circuit: As previously mentioned, the refrigerated bath has a pump-out facility that allows cooled or heated liquid to be pumped through an external closed circuit. Fittings are provided at the rear of the equipment for water inlet and water outlet connections. The refrigerated bath is supplied with a flexible silicon rubber hose connecting the inlet to the outlet if the pump-out facility is not necessary. Fill the bath with to the correct level with water or water/glycol mix, making sure that the drain valve is not open. Connect the external liquid circuit to the fittings shown in the photograph below, use hose clamps if necessary: OPERATION: 1: Locate the refrigerated bath as previously described, and plug the mains lead into the power supply but do not turn the power on just yet. 2: Fill the bath as previously described to the correct level with the relevant fluid to suit the temperature range. 3: Connect external closed circuit as described, or if the pump-out facility is not being used, make sure that the flexible silicon rubber hose is connected between water inlet and water outlet. 4: Controls: 26-1-16 4
5: Temperature control: PV (process variable): SP (set point): This digital display is the actual temperature in the bath. This digital display is the set temperature in the bath. This button is used to enter changes to parameters and to move between functions. These arrows are used to move between, and to alter the numbers on the screen. 6: Power switch: This illuminated switch is used to turn on the temperature controls and the circulating pump. 7: Refrig. switch: This illuminated switch is used to turn on the refrigeration unit to allow cooling to take place. Please note that the refrigeration switch should be turned off when operating at temperatures above 40ºC. Operating the refrigeration system at temperatures above 40ºC may result in reducing the life of the compressor. Also note that the Power switch has to be turned on for the Refrigeration switch to work. 8: Water indicating light: This light is illuminated when the temperature control is calling for heating, and if the fluid level in the tank is below the height of the float switch, the float switch turns off the element and also turns off the water light. This is a safety feature that stops the heating in the bath until the fluid is at a safe level. 26-1-16 5
9: Changing the temperature: Turn on the Power switch. The circulating pump will run immediately, and the temperature will go through a short warm up before displaying the set temperature (SP) on the lower display and the bath temperature on the top display (PV). Use the arrow to highlight the digit on the set temperature to be altered. Use the or arrows to increase or decrease the value. Press the button to enter the new temperature. The display will stop flashing when the new temperature is accepted. Turn on the Refrigeration switch to start the refrigeration system if cooling is required (Only at temperatures below 40ºC!) General cleaning: CLEANING & MAINTENANCE: The interior tank and exterior case can be cleaned using a soft cloth. Never use abrasive cleaners or scouring pads as these will scratch the surface and may result in corrosion. Never use caustic type cleaning agents. The bath can be emptied easily using the drain valve at the rear of the bath. This refrigerated bath has electrical components such as the temperature control and refrigeration condensing unit. These items should not be subjected to any levels of moisture. For example do not use a hose to wash down the circulator. Evidence of moisture entry into any electrical device will void the manufacturer s warranty! Maintenance: Apart from normal levels of cleanliness, it is important that the refrigeration condenser is kept clean and free from dust. Failure to keep the condenser clean could lead to higher temperatures, higher running costs, and often a failure of the compressor. A clean condenser is a critical factor in keeping the refrigeration system operating correctly. The condenser should be cleaned at least 3 monthly, in some dusty locations this may need to be more frequent. By monitoring the amount clogging due to dust, the frequency of cleaning can be adjusted to keep it clean. Manufacturer s warranty does not cover the failure of the compressor due to a blocked condenser. A yellow sticker is placed on the front of the bath above the condenser face. Use this sticker to maintain a schedule or record of when the condenser is cleaned. 26-1-16 6
Procedure for cleaning the condenser: The condenser is located at the front of the bath. Access is gained by removing the front ventilation panel; this can be removed by unscrewing 2 screws. Turn off the power at the power point before cleaning the condenser! Using a stiff paint brush, carefully remove dust and dirt build-up from the condenser, ensuring that dust is not pushed back into the condenser fins. The use of a vacuum cleaner will help in cleaning up the dislodged material. The condenser fins may be sharp, take care to avoid personal injury by not directly contacting them with your hands! The fin material is thin and can be easily bent, take care not to flatten the fins as this may affect the efficiency of the condenser. Calibration of temperature control (should be performed only by qualified technician): There are a number of factors that will affect the accuracy of the temperature displayed in relation to the actual temperature inside the bath, these include the following: Bath temperature. (At higher or lower temperatures the heat loss from the bath will be greater). Viscosity of fluid in the bath. Use of the pump-out facility. If a heat exchanger is in use, the lines will need to be well insulated. 26-1-16 7
Because of the above factors, it will be common to have an error between the temperature displayed (PV), and temperature measured in the bath by a certified instrument. For this reason the digital temperature control has a parameter that can be used to correct the temperature displayed, called the BS. In simple terms this BS adds or subtracts a correction value to the displayed temperature to make it read the correct temperature. Please note that the temperature control has many parameters that are factory preset to provide accurate stable temperature control through the temperature range. These parameters are normally locked to prevent accidental changes to other control parameters; therefore it is important that they are not altered during the calibration procedure! The BS correction parameter can be accessed by means of the following procedure: Press the button for at least 3 seconds. This will allow access to the instrument configuration parameters. Use the button to scroll through the various control parameters that make the temperature control work. You will note that you cannot alter any parameters at this stage because they are locked. Scroll through to the LOCK parameter and use the arrow to make this parameter 0. This will now allow the operator to alter the BS parameter. Note: do not alter any parameter other than BS! AL-1 AT OFF AT.BS 0.0 P I D ARW 100.0 CT 2 BS LOCK 1 26-1-16 8
BS is used to adjust the PV value to make it read the true value when measured by a calibrated independent instrument. For example, if the PV display read 20.0ºC and a calibrated instrument measured the bath temperature at 20.5ºC; you would make BS = +0.5ºC using the up arrow. Don t forget to press to enter the value. Make the LOCK parameter 1 again before exiting the parameter configuration level by holding the button for a few seconds. The output of the temperature control will now adjust the bath to the correct calibrated temperature. WARRANTY: Have the following information available when you contact the service department: Model number and serial number. This is generally found on the exterior of the case in the form of a stick-on label. The company name, address, contact name, contact phone number. A brief description of the problem. All warranty claims must be reported to, and agreed to by a Thermoline representative prior to any work being carried out. 26-1-16 9
Standard 12 month Warranty Thermoline Scientific Equipment Pty Ltd ABN 80 000 859 129 ( Thermoline ) Thermoline warrants to the original purchaser that this product will perform to its product specification for a period of 12 months from date of purchase, provided that the installation of the product has been carried out in accordance with the latest version of the manufacturer's instructions and further provided that the use of the product complies with that specified in the relevant specification. Thermoline is not responsible for any loss or damage arising from incorrect usage, usage outside the suitability of the product as stipulated in the manufacturer's instruction, damage caused by accident, fire, flood, act of God or failure to properly install, operate or maintain the goods in accordance with the printed instructions provided. The following statement applies only to product sales that fall within the definition of a Consumer Sale set out in the Australian Consumer Law contained within the Competition and Consumer Act (Cth) 2012: Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. Notwithstanding the preceding clause and to the extent permissible by law, the liability of Thermoline is limited, in relation to the warranted product and at the option of Thermoline to: replacing the product or the supply of equivalent product; the repair of the product; the payment of the cost of replacing the product or of acquiring equivalent product; or the payment of the cost of having the product repaired. To the extent permitted by law, all other warranties whether implied or otherwise, not set out in this Warranty are excluded and Thermoline is not liable in contract, tort (including, without limitation, negligence or breach of statutory duty) or otherwise to compensate the Purchaser for: any increased costs or expenses; calibration/certification services; any loss of profit, revenue, business, contracts or anticipated savings; any loss or expense resulting from a claim by a third party; or any special, indirect or consequential loss or damage of any nature whatsoever caused by Thermoline s failure in complying with its obligations or the purchaser s failure due to accident damage, impact, misuse or negligence. The benefits given to the purchaser in this Warranty are in addition to other rights and remedies under a law in relation to the products or services to which this warranty applies. This warranty applies only to products purchased and installed in Australia and does not cover any consumable items e.g. filters, light globes, ultrasonic nebulizers. The warranty does not extend to labour and freight costs where the warranted product is located outside Australia. To make a warranty claim, contact Thermoline on 02 9604 3911 or service@thermoline.com.au. 26-1-16 10