OPERATING INSTRUCTIONS FOR: MODEL: TGO-80W, 150W, 240W GLASSWARE DRYING OVEN 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 to 5 Location: Mains connection: Control Panel OPERATION: 5 to 7 Changing the temperature: Setting duration time. High Temp Safety. Loading. CLEANING: 8 Calibration: 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: The Thermoline glassware drying ovens are ideal for providing effective drying of laboratory glassware. Temperatures can be controlled accurately from ambient +10ºC to +110ºC. Digital temperature control with set temperature and internal temperature displayed to one decimal place. Electronic control of heating element for optimum temperature control. Timer function available on temperature control to turn off heating after a predetermined time. In-built over temperature feature in the digital temperature control. If the temperature rises above the set value by more than 3ºC, the heating is shut down). High temperature safety thermostat (operator adjustable). Fan forced air circulation. Adjustable air exhaust vent. Adjustable perforated shelves. Viewing door. 26-1-16 2
These drying ovens will operate from a standard 240 volt, 50Hz, 10 amp general purpose power outlet. LOCATION & INSTALLATION: Location: Place the oven in a well ventilated area on a firm level surface. Please note that all models will generate some heat as a normal part of operation and some of the surfaces will be hot to touch. The exhaust vent at the rear of the oven has a cover over it so that the vent cannot be placed up against a wall. When being used for drying purposes there will be warm moist air being discharged from this vent, please take this into account when determining a location for the oven. The TGO-80W and the TGO-150W are suitable for bench mounting, but the larger TGO-240W is meant to be free standing. Model: TGO-80W TGO-150W TGO-240W Internal Dimensions: 50 x 40 x 40 (WDH) 60 x 50 x 50 (WDH) 60 x 50 x 80 (WDH) External Dimensions 62 x 52 x 62 (WDH) 72 x 62 x 72 (WDH 72 x 62 x 102 (WDH Capacity 80 litres 150 litres 240 litres No of shelves 1 2 3 Electrical rating 240 volts, 7 amps. 240 volts, 8.5 amps. 240 volts, 10 amps. Do not place anything on top of the oven, in particular do not block off the ventilation slots that are used to keep the fan motor cool. Mains connection: These cabinets are 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. 1: Layout: CONTROL PANEL: 26-1-16 3
2: Power switch: This illuminated switch is used to turn on the temperature controls and the circulating fan. 0 is power off and 1 is power on. 3: Temperature control: PV (process variable): SP (set point): This digital display is the actual temperature in the oven. This digital display is the set temperature in the oven. 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. 4: Timer Switch: 26-1-16 4
This switch turns the duration timer on in position 1 or allows heating to be on continuously in position 0. The indicating light above the switch will be on when the set duration time is complete. 5: High Temp Safety Thermostat: Located on the control panel, this thermostat is set by the operator to turn off the heating element, should the temperature control fail in an on state. There is indicating light adjacent to the thermostat to indicate when the thermostat is tripped. The thermostat is not the manual reset type and will revert to normal operation when the temperature falls below the setting. OPERATION: 8: Locate the oven as previously described and plug the lead into the power point. Do not turn on the power yet. 9: Adjust the shelf positions to suit your storage needs by moving the shelf clips provided. 10: Changing the temperature: Turn on the Power switch. The circulating fans 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 oven 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. Note: As mentioned previously, the temperature control has an in-built Over temperature alarm that turns off the heating element if the oven rises above the set temperature by more than 3ºC. The indicating light EV2 will be on during an alarm. 11: Setting the duration timer: Use the button to scroll through the series of operator level displays that are available. Pressing the button once allows the operator to see the power output level being used to heat up the oven. When the temperature control first starts to heat the heat output level will be 100%, but as it nears the set temperature the output % level will reduce. Please note that there are no operator adjustable parameters in this display (see picture below). 26-1-16 5
Press the button again to view the timer display. The duration timer will turn off the heating after the set time has lapsed. The display is in hours and minutes and is shown below set at 10 hours, 00 minutes. Use the arrows on the temperature control as you did to set the temperature to set the required duration time. The bottom display is the set time in hours/minute up to 99 hours, 59 minutes. The top display will count the time down as it lapses. Please note that the time will not start until the oven has reached temperature and the timer switch will need to be in the 1 position. If the switch is in the 0 position the timer will be bypassed. When the duration time has been reached the heating will turn off and the indicating light above the timer switch will be on. Note: to reset the timer you have to turn the main power switch off! Press the button again to return to the original screen. 12: Setting the High Temp Safety Thermostat: A heating element is used for to increase the temperature inside the oven. The over temperature safety thermostat limits the temperature that the oven can reach by isolating the power to the element, when the temperature exceeds the thermostat setting. This is very important if the heating fails in an on condition. It is therefore very important that the thermostat is set at a temperature that will protect the samples inside the oven, to do this we recommend that the thermostat is set just above the operating temperature. To do this use the following procedure: a) Turn the thermostat knob fully clockwise and allow time for the oven to stabilize at the highest set temperature. 26-1-16 6
b) Once the temperature is stable the over temperature thermostat can be adjusted. c) Turn the over temperature thermostat anticlockwise until the red light is illuminated. d) Now slowly turn the over temperature thermostat clockwise until the light (just) goes out. The over temperature thermostat is now set at a temperature just above the set oven temperature to prevent accidental overheating. Please be aware that the thermostat is a simple device that is less accurate than the digital controls. It should not be set too close to the operating temperature in case it interferes with control. 13: Loading: All forced draught ovens such as this one require constant air flow throughout the cabinet to maintain the desired temperature. Correct loading of the shelves must be considered for efficient performance. Allow air space around the product on each shelf. Distribute the load evenly over all of the shelves rather than stacking everything on one shelf. For maximum drying capacity the exhaust vent should be open. The knob for the exhaust vent is on the side of the oven. Pull the knob out to open the vent. 26-1-16 7
CLEANING: General cleaning: The interior liner 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. CALIBRATION: 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 oven, these include the following: Oven temperature. (At higher or lower temperatures the heat loss from the oven will be greater). Loading of the oven. (Product load inside the oven may affect the air flow across the temperature sensor). Sensor location. (The sensor can never be placed in the centre of the oven because it could get damaged). Because of the above factors, it will be common to have an error between the temperature displayed (PV), and temperature measured in the oven 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! 26-1-16 8
AL-2 AT 3.0ºC OFF AT.BS 0.0 P I D ARW 100.0 CT 2 BS LOCK 1 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 reads 100.0ºC and a calibrated instrument measured the oven temperature at 100.5ºC; 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 oven 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