HotBlock Digestion System Operation & Instruction Manual TM Ogden 3200 Controller E N V I R O N M E N TA L E X P R E S S 800.343.5319 or 843.881.656 0 n Fax 843.881.3964 n www.environmentalexpress.com Copyright, Environmental Express, Inc.
Contents HotBlock Operation Guide Contents 1 Warranty Information 2 About Your HotBlock - Part Numbers / Model Information / Specifications 3-5 Getting Started - Installation Requirements / General Information - Controller Settings (Pre Alarm) - Controller Settings (Alarm) - Adjusting the Temperature of Your HotBlock 6 7 8 9 Safety Information 10 Parts List 11 Circuitry Diagram 12-13 Troubleshooting Guide 14-16 EPA Approval Letter 17 Environmental Express HotBlock Manual, copyright Envir
HotBlock™ LIMITED WARRANTY T he Environmental Express HotBlock is warranted against defects in materials and workmanship when used in accordance with applicable instructions, for a period of one year from the date of shipment. This warranty extends to parts, labor, and any approved transportation charges. This warranty applies only to damage or failure caused by normal laboratory use. The warranty is limited to product repair.
About Your HotBlock TM HotBlock Operation Guide 50mL Sample 36-well HotBlock T he SC100 with its 36-sample capacity was the first model in the HotBlock line and is used daily in hundreds of laboratories around the world. All electronics are self contained and isolated in a separate compartment below the block — no need for a separate controller and clumsy cables. For use with the SC100, we recommend our disposable SC475 50mL digestion vessels shown on page 15.
About Your HotBlock TM HotBlock Operation Guide HotBlocks for 100mL Samples F or larger sample size, the SC150 and SC151 HotBlocks are designed for the digestion of 100mL samples. Both blocks use disposable, graduated 125mL screw-cap polypropylene vessels. Note that with the larger digestion vessels faster sample reduction may occur due to greater surface-to-volume ratio.
About Your HotBlock TM HotBlock Operation Guide 50mL Sample 12-well HotBlock T he 12-place HotBlock was designed as a component for our SimpleDist System but doubles as a compact HotBlock for metals digestions. Digest small batches of 50mL samples in a compact footprint. Each block comes with a 12-place polycarbonate transfer rack, C6050.
Installation, General Information HotBlock Operation Guide Environmental Express HotBlock™ Environmental Express HotBlocks provide an efficient method of digesting and storing water, wastewater, soil and sludge samples for metals analysis. These innovative digestion systems allow samples to be digested in a corrosion-free environment. In addition, samples are handled in a small area with minimal radiant heat loss. Users should be aware of potential dangers from heating certain types of compounds.
Controller Settings; No Alarm Function HotBlock Operation Guide www.environmentalexpress.
Controller Settings; Alarm HotBlock Operation Guide www.environmentalexpress.
Adjusting the Temperature of Your HotBlock TM HotBlock Operation Guide HotBlock Temperature Settings: The pre-set factory “Control Point” temperature is 115 °C. Factory tests have shown that this temperature is “sea level safe”. Liquids in uncovered polypropylene tubes should not boil at this setting. If watch glasses are being used, this setting should be lowered to avoid boiling. The block temperature should be optimized for the specific digestion conditions.
Safety Information HotBlock Operation Guide Potential Hazards: The HotBlock should only be operated by properly trained personnel using standard laboratory safety practices. Use extreme caution when operating the HotBlock. Plastic and graphite surfaces of the HotBlock may be too hot to safely touch with bare hands. The HotBlock contains electrical circuits and devices and compounds operating at dangerous voltages.
HotBlock Replacement Parts Part Description HotBlock Operation Guide Part Number Power module (plug receptacle)w push button switch SC941 Power Cord- heavy duty SC958 Environmental Express Controller SC945 12" X 12", 120V, silicone rubber, etched-foil heater mat for models SC100 & SC150 SC951 12" X 12", 240V, silicone rubber, etched-foil heater mat for models SC100-240 & SC150-240 SC951-240* 110/220V, 25A solid state relay SC952 Type K Thermocouple SC953 Terminal board SC955 Ceramic fiber
HotBlock Circuitry Diagram- No Alarm HotBlock Operation Guide Call 1.800.343.
HotBlock Circuitry Diagram with Alarm HotBlock Operation Guide Call 1.800.343.
Troubleshooting Guide HotBlock Operation Guide P lease consult the following troubleshooting guide if you experience problems with your HotBlock. See wiring schematic ( page 12-13) for component identification. If you are unable to resolve the problem or if replacement components are necessary, please contact technical service at 1-800-745-8218 as component replacement varies in degree of difficulty. We recommend that only qualified personnel attempt troubleshooting electrical components.
Troubleshooting Guide HotBlock Operation Guide The temperature has overshot the set point and the audible alarm has sounded. The function of the fail-safe system is to cease heating of the HotBlock in the event of a set point overshoot of 15°C and to alert the technician of the incident. The HotBlock can be “fooled” into fail-safe mode if the set point is manually changed to a value 15° below your current temperature.
Troubleshooting Guide HotBlock Operation Guide of the terminal board (note: terminal #2 of the terminal board contains 3 white wires. To ensure you have the correct wire, trace it back and ensure it originates from the graphite portion of your HotBlock. 3. Set your volt-meter to measure ohms ( Ω ) 4. Touch the red lead to one of these wires and touch the black lead to the remaining wire. 5.
EPA Approval Letter HotBlock Operation Guide Call 1.800.343.
