Type SP87300 SAFE-T SHP9 Explosion Proof Stirring Hot Plate

Transcription

1 BARNSTEA THERMOLYNE CORPORATION Type SP87300 SAFE-T SHP9 Explosion Proof Stirring Hot Plate OPERATION MANUAL SERIES 873 UL Listed for Class I, Group C and Hazardous Locations Model # Voltage escription SP X 9.13 (23.2 cm X 23.2 cm) Aluminum Top SP X 9.13 (23.2 cm X 23.2 cm) Aluminum Top U.S. Patent No. 5,834,739 LT873X1 11/23/99 Serial Number 1

2 Table of Contents Safety Information... 3 Alert Signals... 3 Warnings... 3 Summary of Hazardous Atmospheres... 4 Introduction... 5 Intended Use... 5 General Usage... 5 Principles of Operation... 5 General Specifications... 6 Installation... 7 Site Selection... 7 Operation... 8 Heating Specifications... 8 Setting the Temperature... 9 Use of ial Thermometer... 9 Heating Metal Vessels... 9 Heat-up Time Guide Stirring Speed Specifications Setting the Stirring Speed Stirring Speed Guide Maintenance and Servicing Ordering Procedures One-Year Limited Warranty

3 Alert Signals Warning Warnings alert you to a possibility of personal injury. Caution Cautions alert you to a possibility of damage to the equipment. Note Notes alert you to pertinent facts and conditions. Hot Surface Hot surfaces alert you to a possibility of personal injury if you come in contact with a surface during use or for a period of time after use. This manual contains important operating and safety information. You must carefully read and understand the contents of this manual prior to the use of this equipment. Your Thermolyne SAFE-T SHP9 Explosion-Proof Stirring Hot Plate (UL Listed for Class I, Group C and Hazardous Locations) has been designed with function, reliability, and safety in mind. It is the user's responsibility to install it in conformance with national and local electrical codes. For safe operation, please pay attention to the alert signals throughout the manual. Warnings To avoid electrical shock, this stirring hot plate must: 1. Be installed by a competent, qualified electrician who is familiar with installing Explosion-Proof electrical equipment and insures compatibility among stirring hot plate specifications, power source and ground requirements. To avoid personal injury: 1. Caution: ue to the nature of this product, its safety will be compromised should maintenance or servicing be performed on it. If maintenance or servicing is needed, the stirring hot plate must be returned to the factory. Hot Surface Caution: Hot Surface. Avoid Contact. The top plate will remain hot without visual indication for some time after the unit is turned off. 2. Caution: To reduce risk of the ignition of hazardous atmospheres, enclosure chambers must be kept tightly sealed at all times. 3. o not use metal foil on stirring hot plate. Intended for use with glass vessels. Metal vessels may be used (e.g. stainless steel ware). 3

4 SAFETY INFORMATION Summary of Hazardous Atmospheres Chemicals/atmospheres designated as Class I, Group C and Group in accordance with the National Electric Code, National Fire Protection Association (NFPA 70).* GROUP C CHEMICAL/ATMOSPHERE Acetaldehyde IGNITION TEMPERATURES 175 C, 347 F Warning To reduce the risk of fire or explosion, do not operate or install the SAFE-T SHP9 where the marked operating temperature (T2A, 280 C) exceeds the ignition temperatures of the chemical vapors/hazardous atmospheres present. C C iethyl Ether Ethylene C Unsymmetrical imethyl Hydrazine (UMH) Acetone Acrylonitrile Ammonia Benzene Butane 160 C, 320 F 450 C, 842 F 249 C, 480 F 465 C, 869 F 481 C, 898 F 498 C, 928 F 498 C, 928 F 288 C, 550 F 1-Butanol 343 C, 650 F 2-Butanol 405 C, 761 F n-butyl Acetate Cyclopropane 421 C, 790 F 503 C, 938 F Ethane Ethanol Ethyl Acetate Ethylene ichloride Gasoline Heptane Hexane Isoamyl Alcohol Isoprene 472 C, 882 F 363 C, 685 F 427 C, 800 F 413 C, 775 F C, F 204 C, 399 F 225 C, 437 F 350 C, 662 F 220 C, 428 F Methane (Natural Gas) 630 C, 999 F Methanol Methyl Ethyl Ketone Methyl Isobutyl Ketone 385 C, 725 F 404 C, 759 F 440 C, 840 F 2-Methyl-1-Propanol 416 C, 780 F 2-Methyl-2-Propanol 478 C, 892 F Naptha (Petroleum Naptha) 288 C, 550 F Pyridine Octane Pentane 482 C, 900 F 206 C, 403 F 243 C, 470 F 1-Pentanol 300 C, 572 F Propane 450 C, 842 F * Not a complete list. For a more complete list of flammable chemicals, see classification of gases, vapors, and dusts for electrical equipment in hazardous (classified) locations, NFPA Propanol 413 C, 775 F 2-Propanol 399 C, 750 F Propylene Styrene Toluene Vinyl Acetate Vinyl Chloride Xylenes 455 C, 851 F 490 C, 914 F 480 C, 896 F 402 C, 756 F 472 C, 882 F C, F

5 Introduction Note The Type SP87300 SAFE-T SHP9 Stirring Hot Plate is UL listed explosion-proof for Class I, ivision I, Group C and locations where flammable gases or vapors are present in sufficient quantities to produce explosive or ignitable mixtures. The Group C and classification specifies hazardous atmospheres containing either flammable gases or vapors of flammable liquids (see NFPA 497 and NFPA 321). Intended Use The Type SP87300 SAFE-T SHP9 Stirring Hot Plate is UL listed and has been designed to meet OSHA and other safety standards. It is used for procedures requiring temperatures from 100 F (38 C) to 428 F (220 C). The unit consists of 1) a heated aluminum top plate, 2) an adjustable electronic temperature control and 3) an adjustable electronic stirring speed control. See Figure 1 for the shape and general features of the unit. General Usage o not use this product for anything other than its intended usage. Principles of Operation The top plate is heated by a tubular heating element cast into an aluminum top plate. The temperature of the plate is controlled by a primary electronic feedback control. The primary electronic control serves to limit the top plate temperature under normal operating conditions. A secondary bimetallic thermostat is installed as a safety feature to control the temperature should the primary electronic control fail. The secondary control will limit the top plate temperature to 280 C (536 F). The stirring speed on a SAFE-T SHP9 is controlled by an electronic control. The stirring motor located in an explosion-proof enclosure is combined with a powerful magnet to provide excellent coupling with a stir bar. All control and electrical connections are contained within the aluminum explosion-proof enclosure. Temperature monitoring is provided by inserting a thermometer in the top plate well. (The thermometer is optional part # MEX126.) 5

6 General Specifications SAFE-T SHP9 Stirring Hot Plate for Hazardous Locations Class ivision Groups Operating Temperature 1 1 C and T2A 280 C ( 536 F) Model No. SP87325 SP87324 imensions in Inches (cm) Top Plate 9.13 x 9.13 (23.2 x 23.2) 9.13 x 9.13 (23.2 x 23.2) Overall Width 10.0 (25.4) 10.0 (25.4) Height 8.13 (20.8) 8.13 (20.8) epth (32.4) (32.4) Weight Lbs. (Kg) 29 (13.2) 29 (13.2) Electrical Ratings Volts Amps Watts 1,070 1,070 Phase 1 1 Frequency 60 50/60 Maximum Temp. F ( C) 428 (220) 428 (220) Stirring Speed Range (rpm) Environmental Conditions Operating Ambient Temperature: 17 C to 27 C (63 F - 81 F) Relative Humidity: 20% to 80%, non-condensing. Storage: -25 C to 65 C (63 F F), Relative Humidity: 10% - 85%, non condensing Altitude Max: 2,000 meters Main Supply Voltage Maximum Fluctuation: 10% Installation Category: 2 Pollution egree: 2 6

7 Installation Caution The wooden shipping support attached to the bottom of the SAFE-T SHP9 stirring hot plate must be removed prior to permanent field installation. Caution Minimum allowable spacing between stirring hot plate and any vertical surface is one inch (2.54 cm). Caution To reduce the risk of fire or explosion, do not install where the marked operating temperature exceeds the ignition temperature of the hazardous atmosphere(s). Warning To avoid electrical shock this stirring hot plate must be installed by a competent, qualified electrician who is familiar with installing explosion-proof electrical equipment and ensures compatibility among the stirring hot plate specifications, power source and grounding requirements. Grounding requirements for hazardous areas are specified in Article 501 (and Article 250) of the National Electrical Code. Consult local electrical code requirements also. All units are provided with an equipment grounding lead that should be used as the primary equipment ground connection for the unit. Site Selection Install the SAFE-T SHP9 Stirring Hot Plate on a level, sturdy surface and allow space for ventilation. The electrical specifications are located on the back of the stirring hot plate. Consult Barnstead Thermolyne if your electrical service is different than that listed on the specification plate. Your SAFE-T SHP9 Stirring Hot Plate is designed for permanent installation. Permanent installation is made possible with integral mounting lugs and 1/2 (1.3 cm) conduit with 18 (45.7 cm) of lead wire provided. Leads are factory sealed to meet the requirements of Article 501 of the National Electrical Codes (NEC). The SAFE-T SHP9 Stirring Hot Plate must be hardwired per NEC (USA) or CEC (Canada) requirements. An external switch or circuit breaker needs to be included in the building installation in close proximity of the unit as a means to disconnect supply circuit. Overcurrent protection devices should be included in the installation. The unit can be connected to a branch circuit not exceeding 20 Amps. The stirring hot plate installation must conform with installation requirements for electrical equipment intended for use in Class I, Group C and hazardous locations as defined by the NEC and electrical code requirements of your area. 7

8 Operation Warning ue to the nature of this product, operator safety will be endangered should maintenance or servicing be performed on it. If maintenance or servicing is needed, the stirring hot plate must be returned to the factory. Caution Maximum load of the top plate is 25 lbs. (11.3 kg). Note Accuracy of the dial thermometer (part # MEX126) is ±3 C. Caution The aluminum top plate is easily stained. o not use a wire brush to clean the unit. Using a wire brush will modify the integrity of the surface and it could affect your heat stability. Wipe the top plate with water only, using a lightly dampened non-abrasive cloth. Heating Specifications Element Type: Cast-in Tubular Heating Element Temperature range: 38 C C Temperature cut-off: 235 C ± 9 C Heat-up time to maximum temperature (220 C, unloaded top plate): 16.5 minutes at nominal voltage Temperature stability at center of top plate surface at 70 C: ±1 C Temperature stability at center of top plate surface at 220 C: ±2 C Uniformity of top plate surface at 70 C (center to 1 or 2.54 cm from corners): ±2 C Uniformity of top plate surface at 220 C (center to 1 or 2.54 cm from corners): ±10 C Accuracy of the temperature indicated on the dial thermometer (see note at left) (optional) vs. the average hot plate temperature when the unit is operating at 70 C: ± 3.5 C Accuracy of the temperature indicated on the dial thermometer (see note at left) (optional part) vs. the average hot plate temperature when the unit is operating at 220 C: ±9 C ial marks for heat control knob settings are for reference only. The dial marks indicate approximate hot plate temperature in C (±15 C). 8

9 OPERATION Warning To prevent ignition of hazardous atmospheres, the aluminum explosion-proof enclosure chambers must be kept closed (screws securely tightened) whenever the unit is in operation and/or connected to power supply circuit. Hot Surface Caution: Hot Surface. Avoid Contact. The top plate will remain hot without visual indication for some time after the unit is turned off. Warning Temperature cycling over a temperature range greater than 5 C with a period of approximately 6 minutes may be observed when operating the SAFE-T SHP9 at 220 C or higher. If such cycling is observed, the unit is functioning under abnormal or fault conditions and the secondary bimetallic thermostat is controlling the top plate temperature. Under these circumstances, the unit should first be turned off at both the heat and stir dial switches and the external circuit breaker and allowed to cool completely. Next, in an atmosphere absolutely free of flammable liquids, gases, and/or vapors, test the heat control function of the SAFE-T SHP9 at several temperature settings within the range of 38 C to 220 C. If the top plate temperature of the unit again cycles with a period of approximately 6 minutes over a temperature range greater than 5 C when ramping to or operating at 220 C, return the unit to the factory. Setting the Temperature ial (Control) Switch Turn clockwise to the desired temperature. ial marks indicate approximate surface temperature in C. When the temperature for a given dial setting has been reached, the control will regulate the hot plate. To turn OFF hot plate, turn dial switch fully counterclockwise to the OFF position. Use of ial Thermometer The optional dial thermometer (part # MEX126) can be used to set and monitor the temperature of the aluminum top plate. Heating Metal Vessels Metal vessels may be heated safely on the SAFE-T SHP9 without the danger of the vessel reflecting enough heat back to the top to cause the aluminum to soften. The electronic control in the SAFE-T SHP9 will regulate the aluminum top plate temperature. Warning To prevent ignition of hazardous atmospheres, do not use electrical equipment such as a thermocouple and pyrometer to monitor the hot plate temperature unless it is UL listed for the same hazardous atmospheres and temperature rating as the SAFE- T SHP9. The thermocouple and pyrometer could serve as a source of ignition. 9

10 OPERATION Heat-up Time Guide Unit* Temperature Setpoint Flask Size Amount of Solution Time to Vigorous Boil SP87325 SP87325 (120V) (120V) Max. ial Setting 230 C Max. ial Setting 230 C 1 liter 600 ml water 42 min. 4 liters 2.5 liters water 60 min. *The SP87324 yields similar heat-up time performance data. Note ial marks for speed control knob settings are for reference only. Note The stirring motor in the SAFE- T SHP9 is equipped with an overcurrent protection device. In the event that this device would be activated, the stirring motor will shut off. To reset the motor-: 1. Turn the unit off at both the dial (power) switches and at the external circuit breaker. 2. Allow the unit to cool. 3. Turn the external circuit breaker back on. If the overcurrent protection device is repeatedly activated during normal operating conditions, return the unit to the factory. 10 Stirring Speed Specifications Speed range : RPM (Maximum speed is dependent on the viscosity of the solution.) Stability of the stirring speed setting (4 liter flask with 2,000 ml water): ± 3 rpm Max. recommended flask size: 4 liters. Setting the Stirring Speed ial (Power) Switch The power for the stirrer is turned ON or OFF by means of the stir dial switch. The power for the stirrer is ON when the stir dial is turned clockwise past the zero OFF mark (0). To set the stir control to the desired stirring speed, turn the dial switch clockwise until the dial pointer is aligned with the selected dial mark (RPM s). The dial marks indicate approximate stirring speed in RPM s (± 20 RPM).

11 OPERATION Stirring Speed Guide (All stirring speed measurements made at 21.5 C) Unit* Flask Size Stir Bar Size Amount of Solution Viscosity Maximum Speed** SP87325 SP87325 SP87325 SP87325 SP liter 2 in. 600 ml water 1 liter 2 in. 600 ml corn oil 1 liter 2 in. 600 ml 30 weight motor oil 500 ml 2 in. 350 ml 1,265 centipoise viscosity std. 1 liter 2 in. 350 ml corn syrup (light) 1,200 rpm 1,200 rpm 950 rpm 400 rpm 70 rpm *The SP87324 unit performs similarly. **Maximum speed obtained without the stir bar losing coupling with the magnet in the SAFE-T SHP9. 11

12 Maintenance and Servicing Caution To reduce the risk of the ignition of hazardous atmospheres, any repairs made to this product are to be made by the manufacturer. ue to the nature of this product, operator safety will be endangered should maintenance or servicing be performed on it by the operator. The unit does not contain operator serviceable parts. If maintenance or servicing is needed, the stirring hot plate must be returned to the factory. isconnect the unit from the supply circuit and any installation mountings and call Barnstead Thermolyne customer service ( or ). 12

13 Ordering Procedures Please refer to the Specification Plate for the complete model number, serial number, and series number when requesting service or in any correspondence concerning this unit. All parts listed herein may be ordered from the Barnstead Thermolyne dealer from whom you purchased this unit or can be obtained promptly from the factory. When service or replacement parts are needed we ask that you check first with your dealer. If the dealer cannot handle your request, then contact our Customer Service epartment at or Prior to returning any materials to Barnstead Thermolyne Corp., please contact our Customer Service epartment for a Return Goods Authorization number (RGA). Material Returned without an RGA number will be returned. 13

14 One Year Limited Warranty Barnstead Thermolyne Corporation warrants that if a product manufactured by Barnstead Thermolyne and sold by it within the continental United States or Canada proves to be defective in material or construction, it will provide you, without charge, for a period of ninety (90) days, the labor, and a period of one (1) year, the parts, necessary to remedy any such defect. Outside the continental United States and Canada, the warranty provides, for one (1) year, the parts necessary to remedy any such defect. The warranty period shall commence either six (6) months following the date the product is sold by Barnstead Thermolyne or on the date it is purchased by the original retail consumer, whichever date occurs first. All warranty inspections and repairs must be performed by and parts obtained from an authorized Barnstead Thermolyne dealer or Barnstead Thermolyne (at its own discretion). Heating elements, however, because of their susceptibility to overheating and contamination, must be returned to our factory, and if, upon inspection, it is concluded that failure is not due to excessive high temperature or contamination, warranty replacement will be provided by Barnstead Thermolyne. The name of the authorized Barnstead Thermolyne dealer nearest you may be obtained by calling ( ) or writing to: Barnstead Thermolyne P.O. Box Kerper Boulevard ubuque, IA USA FAX: (319) ARESS: mkt@barnstead.com Barnstead Thermolyne s sole obligation with respect to its product shall be to repair or (at its own discretion) replace the product. Under no circumstances shall it be liable for incidental or consequential damage. THE WARRANTY STATE HEREIN IS THE SOLE WARRANTY APPLICABLE TO Barnstead Thermolyne PROUCTS. Barnstead Thermolyne EXPRESSLY ISCLAIMS ANY AN ALL OTHER WARRANTIES, EXPRESSE OR IMPLIE, INCLUING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR USE. 14

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16 16 Barnstead Thermolyne 2555 Kerper Blvd. P.O. Box 797 ubuque, IA Phone: Fax: Address: ISO 9001 REGISTERE