BOD INCUBATORS MODELS: LI6P/LI6P-2 LI20P/LI20P-2 Installation and Operations Manual /12

Transcription

1 BOD INCUBATORS MODELS: LI6P/LI6P-2 LI20P/LI20P-2 Installation and Operations Manual /12 Sheldon Manufacturing Inc. P.O. Box 627 Cornelius, Oregon INTERNET: (503) FAX (503)

2 TABLE OF CONTENTS SECTION 1.0 INTRODUCTION SECTION 2.0 RECEIVING AND INSPECTION SECTION 3.0 INSTALLATION SECTION.0 GRAPHIC SYMBOLS SECTION 5.0 CONTROLS OVERVIEW SECTION 6.0 OPERATION SECTION 7.0 MAINTENANCE SECTION 8.0 TROUBLESHOOTING SECTION 9.0 PARTS LIST UNIT SPECIFICATIONS SCHEMATICS These units are TUV CUE listed as general purpose air incubators 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 requirements of CAN/CSA-C22.2 No , second edition, including Amendment 1, or a later version of the same standard incorporating the same level of testing requirements. These units are not intended for hazardous or household locations or use. 2

3 INTRODUCTION 1 Thank you for choosing a general purpose incubator. 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 for use by all operators of the unit. Ensure that 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 incubator and its recommended accessories have been designed and tested to meet strict safety requirements. For continued safe operation of your incubator, always follow basic safety precautions including: Read this entire manual before using the incubator. 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 incubator 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 data plate 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. 3

4 2 RECEIVING AND INSPECTION 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. NOTE: This equipment must be used only for its intended application; any alterations or modifications will void your warranty. 1.1 Inspection: The carrier, when accepting shipment, also accepts responsibility for safe delivery and is liable for loss or damage. On delivery, inspect for visible exterior damage, note and describe on the freight bill any damage found and enter your claim on the form supplied by the carrier. 1.2 Inspect for concealed loss or damage on the unit itself, both interior and exterior. If necessary, the carrier will arrange for official inspection to substantiate your claim. 1.3 Return Shipment: Save the shipping crate until you are sure all is well. If for any reason you must return the unit, first contact your Customer Service representative for authorization. Supply data plate information including model number and serial number. For information on where to contact Customer Service, please see the manual cover. 1. Accessories: Verify that all of the equipment indicated on the packing slip is included with the unit. Carefully inspect all packaging before discarding. The LI6P incubator is supplied with two (2) standard shelves. The LI20P incubator is supplied with four () standard shelves and one (1) sliding shelf. WARNING: Never use this unit for the growth, cultivation, incubation or storage of fruit flies (drosophila melanogaster). This unit is not designed for use with fruit flies. Improper use of this unit, including use with fruit flies, will void any warranty. Other units are specifically manufactured for fruit fly application, and you should consult your dealer or the manufacturer in order to identify another model suitable for your application.

5 INSTALLATION 3 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. Under normal circumstances this unit is intended for use indoors, at room temperatures between 5 and 30, at no greater than 75% Relative Humidity ( at 25 C ) and with a supply voltage that does not vary by more than 10%. Customer Service should be contacted for operating conditions outside of these limits. 2.1 Power Source: Check the data plate for voltage and ampere requirements before making a connection. If the requirements match 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 a 50/60 Hz application. We recommend a separate circuit to prevent loss of product due to overloading or circuit failure. Note: Electrical supply to the unit must conform to all national and local electrical codes. 2.2 Location: When selecting a site for the incubator, consider all conditions that may affect performance, such as extreme heat from radiators, stoves, ovens, autoclaves, etc. Position the unit so the end-user has access to the power plug. Avoid direct sun, fast moving air currents, heating and cooling ducts, and high traffic areas. To ensure air circulation around the unit, allow a minimum of 20 cm (8 ) between incubator and any walls or partitions that may obstruct free airflow and a minimum of 10 cm ( ) top clearance. 2.3 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. Doors, 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 shelves and trays should be removed and doors need to be positively locked in the closed position during transfer to prevent shifting and damage. 2. Leveling: The unit must sit level and solidly. Turn the leveling feet counterclockwise to raise the level. If the unit must be moved, turn the leveling feet in all the way to prevent bending and damage. 2.5 Install Air Ducts (LI6P/LI6P-2): Does not use Side Air Ducts. (LI20P/LI20P-2): Two (2) side air ducts are packed with the accessories. Install air ducts from the corner top and bottom hooks into the provided slots on the sides of the chamber. 2.6 Install Shelf Mounts and Shelves: Install shelf mounts from the corner top and bottom hooks into the shelf standard in the chamber. Hang wire shelves from the shelf mount bracket. 2.7 Cleaning: The incubator interior was cleaned at the factory but not sterilized. See the CLEANING section for more information. WARNING: Never clean the unit with alcohol or flammable cleaners with the unit connected to the electrical supply. Always disconnect the unit from the electrical service when cleaning and assure all volatile or flammable cleaners are evaporated and dry before reattaching the unit to the power supply. 5

6 GRAPHIC SYMBOLS Your incubator is provided with a display of graphic symbols on the control panel and adjacent to the power inlet. They are designed to help identify the use and function of the adjustable components. 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 Overtemperature Protection Signale un "dépassement de température" Indicates AC Power Repère "secteur AC" I O Indicates the power is ON Repère de la position "MARCHE" de l'interrupteur d'alimentation 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 Unit should be recycled (Not disposed of in land-fill) Indique l appareil doit être recyclé (Ne pas jeter dans une décharge) 6

7 CONTROLS OVERVIEW 5.1 Power Switch: The main power I/O (on/off) switch controls all power to the unit and must be in the I/ON position before any systems are operational..2 Main Temperature Control: The Main Temperature Control is marked SET TEMPERATURE and consists of the digital display and UP and DOWN arrow pads for inputting set point temperatures and calibration..3 HEATING Light: This pilot light is ON when the peltier device is actively heating or cooling the chamber. Under normal operating conditions, this light should be on most of the time.. Overtemperature Limit Thermostat (OTL): This controller is marked SET OVERTEMPERATURE and is equipped with an adjustment knob and a graduated dial. Completely independent of the Main Temperature Controller, the OTL guards against any failure of the Main Temperature Controller which would allow temperature to rise to a level that would damage the incubator or the material contained within. If temperature rises to the OTL set point, the OTL takes control of the peltier unit and prevents the temperature within the incubator from rising further until the problem can be resolved, or service can be arranged. It is not recommended that the unit be allowed to operate for an extended period of time using only the OTL as temperature stability will suffer..5 OVER TEMP Light: This pilot light comes on when the Overtemperature Limit Thermostat has been activated. Under normal operating conditions this light should never come on..6 Fuse: Located on the back near the top inside of the cord inlet. The fuse offers protection against over current conditions. If the fuse is blown, the unit will shut down and the cause should be determined and corrected before replacing the fuse/fuses. 7

8 OPERATION 6 The Peltier module and air circulating fan are used in conjunction with the temperature control circuit to achieve accurate temperature control. The thermostat sensor located in the air stream senses any temperature deviation from the control point. Heating or cooling is provided to maintain the desired temperature. The circulating fan provides even air distribution throughout the chamber and assures temperature uniformity. The power source must match the unit s requirements listed on the data plate located on the side of the incubator. 5.1 Plug the service cord into the power source and turn the Power Switch to the ON position. Turn the Overtemperature Thermostat to its maximum position, fully clockwise using a coin or flat edged tool. 5.2 Place a liquid filled bottle reference thermometer or the probe of a remote reading electronic thermometer (neither are supplied with your incubator) in the center of the chamber. Placing the reference thermometer in the chamber at this stage of operation will allow for calibrating the control without the loss of processing time. 5.3 Loading Procedure: Adequate spacing should be allowed between items whenever possible. Proper spacing will allow maximum air circulation, which is necessary for temperature uniformity. 5. Set Main Temperature: Enter desired set point temperature. To enter set point mode on the control, press either the UP or DOWN arrow pad one time. The digital display show SP and then blink on and off. While blinking, digital display is showing the current set point, which can be changed by pushing the UP and DOWN arrow pads until the desired value is reached. If the arrow pads are not touched for five (5) seconds the display will stop blinking and read the temperature in the chamber. Allow at least 2 hours for the temperature to stabilize at set point. 5.5 Calibrating Main Temperature Control: It is recommended that calibration is done once the unit is installed in its working environment and has been stable at the temperature set point for several hours. Once the chamber temperature is stable, compare the reference thermometer with the digital display. If there is an unacceptable difference, put the display into calibrate mode by pushing both UP and DOWN arrow pads at the same time until the display shows CO and then the Temperature Display will blink off and on. While blinking, the display can be changed to match the reference thermometer by pushing the UP or DOWN arrow pads. If no arrow pads are pushed within five (5) seconds the display will revert to displaying the set point. Allow the incubator temperature to stabilize and repeat the process if necessary. (This may take several hours.) 5.6 Set Overtemperature Limit Thermostat (OTL): To set the Overtemperature Limit Thermostat, perform the following: 1. The Overtemperature Limit Thermostat should be initially set to its maximum position to allow the Main Temperature Controller to stabilize. 2. Once the incubator is stable at the desired set point, turn the Overtemperature LImit Thermostat counterclockwise until the OVERTEMP ACTIVATED light turns on. 3. Next, turn the Overtemperature Limit Thermostat clockwise just until the light turns off.. Then turn the Thermostat clockwise again, two minor increments on the dial past the point where the light went out. This will set the Overtemperature Limit Thermostat at approximately 1 C above Main Temperature set point. 5. To verify the Overtemperature set point, simply set the temperature set point to 2 C higher than the steady state temperature. Then monitor the temperature as it is rising and note when the temperature OVERTEMP ACTIVATED light turns on. This will be the actual set point of the Overtemperature control. If the Overtemperature feature is being used, it is should be tested annually. 5.7 Accessory Outlet: There is an electrical outlet inside the chamber for use with equipment not exceeding one (1) amp. Note that equipment in the chamber may provide additional heat that could affect the temperature range and the temperature uniformity of the incubator. It is recommended that testing be done with the incubator and any additional equipment to insure that the desired operating conditions can be met. 8

9 MAINTENANCE 7 Warning: Prior to any maintenance or service on this unit, disconnect the power cord from the power source. Before reattaching the unit to its power source, be sure all volatile and flammable cleaners are evaporated and dry. Avertissement: Avant d'effectuer toute maintenance ou entretien de cet appareil, débrancher le cordon secteur de la source d'alimentation. Avant de reconnecter l'appareil sur le secteur, s'assurer que tous les produits de nettoyage volatiles et inflammables sont complètement évaporés. The design of the chamber is such that periodic maintenance is kept to a minimum. No lubrication or adjustments of components is needed. Note: The unit chamber should be cleaned and disinfected prior to use. 6.1 Cleaning: Periodic cleaning is required. To clean the incubator, perform the following steps: 1. Remove all of the interior parts, if assembled. 2. Clean the incubator with a mild soap and water solution, including all corners. DO NOT USE spray cleaners that might leak through openings and cracks and get on electrical components, or that may contain solvents that will harm coatings. DO NOT USE chlorine-based bleaches or abrasives, as they will damage the painted interior. 3. Rinse with distilled water and wipe dry with a soft cloth.. Special care should be taken when cleaning around the sensing heads to prevent damage. 6.2 Disinfecting: Disinfect the incubator on a regular basis. To disinfect the incubator, perform the following steps. 1. Remove all of the interior parts, if assembled. 2. Disinfect the incubator, including all corners, using a suitable disinfectant. Shelves and shelf clips are autoclaveable. DO NOT USE spray disinfectants that might leak through openings and cracks and get on electrical components, or that may contain solvents, corrosives, or abrasives that will harm the painted coatings. Special care should be taken when cleaning around sensing heads to prevent damage and around the door gasket so as not to impair the positive seal. 3. If a hazardous material/substance has been damaged in the unit, immediately initiate your site s Hazardous Material Spill Containment protocol. Contact your local Site Safety Officer and follow instructions per the policy and procedures established for your site.. There are many commercially available disinfectants available that are non-corrosive and nonabrasive and suitable for use on painted surfaces. Contact your local Site Safety Officer for detailed information for the proper disinfectants suitable for your operation. Warning: Never clean the unit with alcohol or flammable cleaners and assure all volatile or flammable cleaners are evaporated and dry before reattaching the unit to the power supply. Avertissement: Ne jamais nettoyer l'appareil à l'alcool ou avec des nettoyants inflammables et veiller à ce que les produits volatils ou inflammables soient entièrement évaporés avant de rebrancher le content d'alimentation de l'appareil. Periodically inspect the door latch, trim, catch and gasket for signs of deterioration. Failure to maintain the integrity of the door system will shorten the life span of the incubator. No maintenance is required on electrical components. If the incubator fails to operate as specified, please review the TROUBLESHOOTING section prior to calling for service. 9

10 8 TROUBLESHOOTING and SERVICE When troubleshooting, always make a visual inspection of the incubator and control console to find loose or disconnected wires which may be source of the trouble. In the event the incubator does not operate properly, check the following before calling for service. TEMPERATURE Temperature too high 1/ controller set too high-see Operation 2/ controller failed on call Customer Service Temperature too low 1/ Overtemperature Limit Thermostat set too low see Operation 2/ controller set too low see Operation 3/ unit not recovered from door opening / unit not recovered from power failure or being turned 5/ controller failure confirm with front panel lights that controller is operational. 6/ Overtemperature Limit Thermostat failure confirm with front panel lights that thermostat is operating correctly. Unit will not heat over a temperature that is below set point 1/ confirm that fan is moving check fan motor motion in shadow box and feel for air movement in chamber 2/ confirm that set point is set high enough turn Overtemperature Limit Thermostat all the way clockwise and see if HEATING light or OVER TEMP light comes on 3/ check calibration using independent certified thermometer, follow instructions in Operation Unit will not heat/cool at all 1/ verify that controller is asking for heat/cool by looking for controller light. 2/ do all controller functions work? Indicated chamber temperature unstable 1/ ±0.1 may be normal 2/ Are the internal and external fans working? 3/ Is ambient room temperature rapidly changing either door opening or room airflow from heaters or air conditioning? stabilize ambient conditions. / Overtemperature Limit.2 Thermostat set too low be sure that the thermostat is set at least one degree over the desired main set point; check if OVERTEMP pilot is on continuously; turn controller knob completely clockwise to see if problem solved then follow instructions in owner s manual for correct setting see in Operation 5/ electrical noise remove nearby sources of RFI including motors, arcing relays or radio transmitters. Display and reference thermometer don t match 1/ calibration error see Operation 2/ allow at least two hours to stabilize Can't adjust set points or calibration 1/ turn entire unit off and on to reset and call Customer Service. 10

11 TEMPERATURE Calibrated at one temperature, but not at another This can be a normal condition when operating temperature varies widely. For maximum accuracy, calibration should be done as close to the set point temperature as possible. MECHANICAL Motor makes noise Assure that fan is not making contact with foreign material. Door not sealing Service Confirm that unit has not been damaged and body is square If none of the suggestions listed above in the Troubleshooting guide have solved the problem Customer Service should be contacted for assistance. Call , and have the model number, serial number and voltage (listed on the date plate on the side of the incubator) as your service representative will require it. 11

12 9 PARTS LIST Description V V Peltier device LI6/LI Peltier device LI20/LI EMI filtered fused inlet Cooling fans (2) Convenience Outlet Power Supply Feet, Adjustable Glide I/O (on/off) Switch Main Temperature Controller Overtemperature Thermostat (OTL) Pilot Light, Green Pilot Light, Red Power Cord, European N/A Power Cord, USA (LI6P/LI6P-2) Power Cord, USA (LI20P/LI20P-2) Optional Sliding Shelf Kit LI20P/LI20P-2 (one shelf) Standard Shelf LI20P/LI20P-2 quantity 5 LI6P/LI6P-2 quantity 2 1Shelf Mounting Bracket (2 needed per shelf) Fuse 6.3A (2 required on v unit) Knob for OTL Fuse Holder (220-20v unit) N/A LED Light Bar Door Switch

13 UNIT SPECIFICATIONS LI6P V LI6P V LI20P V LI20P V Shipping Weight 25 lbs kg 25 lbs kg 05 lbs kg 05 lbs kg Net Weight 125 lbs kg 125 lbs kg 26 lbs kg 26 lbs kg Exterior W x D x H Dimensions 30 x 31.5 x 33.5 in 76.2 x x cm 30 x 31.5 x 33.5 in 76.2 x x cm 30 x 31.5 x 69.5 in x x cm 30 x 31.5 x 69.5 in x x cm Interior W x D x H Dimensions 25.5 x 2.0 x 18.5 in. 6.8 x 61.0 x 7.1 cm 25.5 x 2.0 x 18.5 in. 6.8 x 61.0 x 7.1 cm 25.5 x 2.0 x 5.5 in x x cm 25.5 x 2.0 x 5.5 in x x cm Capacity 6.55 cubic feet cubic liters 6.55 cubic feet cubic liters cubic feet cubic liters cubic feet cubic liters Temperature Range Temperature Uniformity 15 C to 0 C 15 C to 0 C 15 C to 0 C 15 C to 0 C +0.5 C at 20 C +0.5 C at 20 C +0.5 C at 20 C +0.5 C at 20 C Shelf Capacity 75 lbs. Per Shelf 150 lbs. Total 3.0 kg Per Shelf 68.0 kg Total 75 lbs. Per Shelf 150 lbs. Total 3.0 kg Per Shelf 68.0 kg Total 75 lbs. Per Shelf 150 lbs. Total 3.0 kg Per Shelf 68.0 kg Total 75 lbs. Per Shelf 150 lbs. Total 3.0 kg Per Shelf 68.0 kg Total Power 3.0 Amps 50/60 Hz 2.0 Amps 50/60 Hz 5.5 Amps 50/60 Hz 3.5 Amps 50/60 Hz 13

14 Wire Diagram LI6P Volt (985128) EMI FILTE FUSED INLET GREEN LIGHTED SWITCH INTERIOR OUTLET COOLING FAN L1 TERMINAL BLOCK TOP ½ OTP COOLING FAN OTP LIGHT PELTIER ACTIVE LIGHT L2 TERMINAL BLOCK GND N L 2VDC POWER SUPPLY POWER SUPPLY VDC BLOCK EARTH PELT- GND PELT+ +25V BOTTOM ½ OTP PELTIER CONTROL G TEMPERATURE SENSOR HF+ HF- CF+ CF- TEC+ TEC- TEC+ TEC- 18G -2VDC BLOCK PELTIER DOOR SWITCH WHITE LED LIGHT BAR

15 Wire Diagram LI6P Volt ( ) EMI FILTE FUSED INLET GREEN LIGHTED SWITCH INTERIOR OUTLET COOLING FAN L1 TERMINAL BLOCK TOP ½ OTP COOLING FAN OTP LIGHT PELTIER ACTIVE LIGHT L2 TERMINAL BLOCK GND N L 2VDC POWER SUPPLY POWER SUPPLY VDC BLOCK EARTH PELT- GND PELT+ +25V BOTTOM ½ OTP PELTIER CONTROL G TEMPERATURE SENSOR HF+ HF- CF+ CF- TEC+ TEC- TEC+ TEC- 18G -2VDC BLOCK PELTIER DOOR SWITCH WHITE LED LIGHT BAR

16 Wire Diagram LI20P Volt ( ) EMI FILTE FUSED INLET GREEN LIGHTED SWITCH INTERIOR OUTLET COOLING FAN L1 TERMINAL BLOCK TOP ½ OTP COOLING FAN OTP LIGHT PELTIER ACTIVE LIGHT L2 TERMINAL BLOCK GND N L 2VDC POWER SUPPLY POWER SUPPLY VDC BLOCK EARTH PELT- GND PELT+ +25V BOTTOM ½ OTP PELTIER CONTROL G TEMPERATURE SENSOR HF+ HF- CF+ CF- TEC+ TEC- TEC+ TEC- 18G -2VDC BLOCK PELTIER DOOR SWITCH WHITE LED LIGHT BAR

17 Wire Diagram LI20P Volt ( ) EMI FILTE FUSED INLET GREEN LIGHTED SWITCH INTERIOR OUTLET COOLING FAN L1 TERMINAL BLOCK TOP ½ OTP COOLING FAN OTP LIGHT PELTIER ACTIVE LIGHT L2 TERMINAL BLOCK GND N L 2VDC POWER SUPPLY POWER SUPPLY VDC BLOCK EARTH PELT- GND PELT+ +25V BOTTOM ½ OTP PELTIER CONTROL G TEMPERATURE SENSOR HF+ HF- CF+ CF- TEC+ TEC- TEC+ TEC- 18G -2VDC BLOCK PELTIER DOOR SWITCH WHITE LED LIGHT BAR

18 SHELDON MANUFACTURING, INC. LIMITED WARRANTY Sheldon Manufacturing, Inc., ( Manufacturer ) warrants for the original user of this product in the U.S.A. only that this product (parts only if outside of the U.S.A.) will be free from defects in material and workmanship for a period of two years from the date of delivery of this product to the original user (the Warranty Period ). During the Warranty Period, Manufacturer, at its election and expense, will repair or replace the product or parts that are proven to Manufacturer s satisfaction to be defective, or, at Manufacturer s option, refund the price or credit (against the price of future purchases of the product) the price of any products that are proven to Manufacturer s satisfaction to be defective. This warranty does not include any labor charges if outside of the U.S.A. This warranty does not cover any damage due to accident, misuse, negligence, or abnormal use. Use of Manufacturer s product in a system that includes components not manufactured by Manufacturer is not covered by this warranty. This warranty is void in the event that repairs are made by anyone other than Manufacturer without prior authorization from Manufacturer. Any alteration or removal of the serial number on Manufacturer s products will void this warranty. Under no circumstances will Manufacturer be liable for indirect, incidental, consequential, or special damages. The terms of this warranty are governed by the laws of the state of Oregon without regards to the principles of conflicts of laws thereof. If any provision of this limited warranty is held to be unenforceable by any court of competent jurisdiction, the remainder of this limited warranty will remain in full force and effect. This warranty is in lieu of and excludes all other warranties or obligations, either express or implied. Manufacturer expressly disclaims all implied warranties, including without limitation, the warranties of merchantability and fitness for a particular purpose. For fast and efficient support, please have the following information available anytime you request service: Model Serial No. Part No. 18