TCS Heater System Installation and Operation Manual

Transcription

1 Safety Carefully read and understand this entire document. This important information will maximize safety, heater performance, efficiency and system life. All heating elements inherently pose burn, fire and electrical shock hazards. These can result in injury to personnel or damage to equipment. Care should always be exercised during installation and use. Do not install heaters in areas where combustible gas, vapor or dust is present. Only instructed or skilled persons shall be entrusted with the maintenance work of electroheat installations. No maintenance work shall be carried out with equipment live. Special arrangements (such as locking devices) shall be used to prevent switching-on of the equipment while work is in progress. Personnel whose activities involve the operation of electro heat installations or work in the vicinity shall be notified of the safety requirements to be observed during the operation of the installation by means of orders or service instructions brought to their attention by posting up notices or, if necessary, by handing them a book of instructions for which acknowledgement is obtained. The responsible persons shall ensure that the safety requirements are observed. This caution symbol alerts you that there is a safety concern associated with the task that could affect the operator or the equipment. Personnel shall have at their disposal the safety equipment required for carrying out the operations they are called upon to undertake and for facilitating their intervention in the event of an incident or an accident. This equipment shall be adapted to the working voltage and maintained in perfect condition. In the case of accidental burn, seek medical attention. In the case of accidental electrocution, seek medical attention. DOC-xxxxxxx Page 1 of 6

2 Installation Step 1: Step 4: Remove power to the machine and follow lock out tag out procedures. Disconnect and mark lead wires, and then remove existing heater bands. Clean the barrel surface with an emory cloth and rag to remove excess dirt, rust, or burrs. A perfectly smooth surface is not required. Comply with requirements and recommendations outlined in safety document DOC during the installation process. This document is available in the package with each heater. If you are installing barrel cool down or zone cooling refer to cooling installation guide (steps C1-C6) after step 13. Read these steps prior to beginning your installation. Step 2: Measure distance A from the starting point on the feed end of the barrel to the center of the first thermocouple. The starting point should be the edge of the feed end platen or bolt heads. Step 5: No terminals on the back side in this Check before installing! Heater halves are supplied with two terminal connections on each half. When both terminal connections are on the same side of each half, then the heaters should be installed such that all four terminals are on the same side of the barrel. Step 6: Replace thermocouple adaptors with extended adaptor wells with recommended length of at least 3.5. Preferred length for any application is 4 Step 3: See Installation BOM Review the installation BOM for your specific machine make, model and size to identify all parts needed for each zone. Use measurement A from step 4 to locate where the thermocouple will lie within the first set of heater halves. Use a 5/8 diameter round file to cut half of the thermocouple hole on each heater half. Do not exceed 3/8 depth of cut on either half! DOC-xxxxxxx Page 2 of 6

3 Step 7: Step 10: Place the heater halves on the barrel, and place the strap(s) around the heater. Two straps are supplied for any heater 9.25 or longer. Move to step 8 before tightening the strap! Step 8: Repeat installation steps for each zone. There should be little or no gap between zones, and the last heater will generally stop short of the end cap. Step 11: Secure the heater firm to the barrel by fastening the strap(s) to a maximum of 10 in-lb. Heater should not be movable by hand when tight, but over tightening can cause damage to the heater. Step 9: Check before wiring! Note the voltage printed on each heater half and also specified on the BOM document. Heaters are rated in halves and must be wired in series when line voltage is higher than the marked heater voltage. See step 12 prior to making electrical connections. Step 12: Measure dimension B from the edge of the first installed zone to the center of the next zone thermocouple. Care required! Electrical connections require 26in-lb tightness. Use a 3/8 wrench to hold the terminal in place while tightening the nut to prevent potential damage due to twisting the terminal. DOC-xxxxxxx Page 3 of 6

4 Step 13: Cut the Teflon cover flap as needed to allow for wires and thermocouple adaptors. Install Teflon cover with the flap over the terminals, and fasten with silicone O-rings. Wires can be neatly routed underneath the flap in the Teflon cover, or captured outside of the flap by silicone O-rings. Single Zone 2 Heaters In Series HTR 1 HTR 2 Single Zone 2 Heaters In Parallel HTR 1 HTR Machine Leads Single Zone 4 Heaters In Series Machine Leads HTR 1 HTR 2 HTR 3 HTR 4 + Machine Leads Heater Wiring Schematic - Applying higher than the actual rated voltage to the heaters will increase the watt density which can lead to premature failure and/or damage to the barrel. Verify that an over-current device (ex: fuse) is installed to prevent the heater from being subject to higher amperage than the heater is rated for. See heater markings for rated amperage. DOC-xxxxxxx Page 4 of 6

5 It is recommended that the user install a high temperature protection device where conditions for an over temperature fault are likely to occur and pose a risk to the machine or operating personnel. This control should be both functionally and electrically independent. Insulate all live electrical connections. Exposed electrical wiring is a violation of Electrical Safety Codes including O.S.H.A. Operation The TCS Heater system is an assembly of resistance heater halves wired together to optimize zone specific heating requirements. The heaters are controlled by the machine s controller. TCS heaters rated maximum permissible temperature rating is 750 F (399 C). Operating the heater above the maximum temperature rating may cause damage to the machine or heater. Each TCS System Kit will consist of some or all of the following components. Quantities will vary pending on the system size and configuration. Consult the system packing slip for a complete list of components supplied with your system. Part Number Description TCS-12xxxx TCS Htr Half EHW Igloo Ceramic Cover EHW Ceramic Cap for Screw MHW xxx O-Ring TCS-16xxxxx TCS Zone Cover EHW Lead Lug Assembly MFB xxx TCS Adjustable Strap BPT Fiberfrax 970J ' RFM R-300 Cement - 4 oz Squeeze Bottle DOC TCS Clamshell Installation Guide MFB TCS Warning Plate DOC TCS Warning Plate Instructions Surface temperature of the heaters is highly variable. The Hot Surface label supplied with the TCS System kit should be applied to the machine to alert all operators and maintenance employees of this danger. Do not touch the heater surface or Teflon cover during or directly after operation. Allow heaters to cool before servicing. DOC-xxxxxxx Page 5 of 6

6 Preventative Maintenance The O-rings on the Teflon covers hold the cover in place on the heater. It is recommended that they that be inspected annually. Replace any O-ring that exhibits signs of melting or cracking. The terminals on the heaters absorb a lot of heat throughout the life of the heater and can cause the terminal connection to become loose. It is recommended the terminals be re-tightened with a torque wrench to prevent a poor connection from causing the terminal to overheat and fail. Refer to Step 12 in the installation manual for proper torque procedure and specification. Replace Ceramic Cap and Ceramic Insulator when finished. DOC-xxxxxxx Page 6 of 6