Operating Instructions SM3-641 Two component proportioning valve SKW-E Sterling Material Processing
SKW-E Sterling Material Processing 5200 West Clinton Ave. Milwaukee, WI 53223 Telephone: (414) 354-0970 Fax: (414) 354-6421 www.sterlco.
SKW-E Sterling Material Processing retains all rights to change the information in these operating instructions at any time without notice. We assume no liability for any errors or direct or indirect damage resulting in context with these operating instructions. SM3-641 Copying, translation or publication in any form except for personal use of purchaser requires approval from Sterling Material Processing. All rights reserved.
Please note that our address and phone information has changed. Please reference this page for updated contact information. These manuals are obsolete and are provided only for their technical information, data and capacities. Portions of these manuals detailing procedures or precautions in the operation, inspection, maintenance and repair of the products may be inadequate, inaccurate, and/or incomplete and shouldn’t be relied upon.
SKW-E Table of contents 1. General instructions (Version: 64.10-0251GB01 08/02) . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1. 1.2. 1.3. 1.4. 1.5. Warnings and symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Explanations and information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Legal basis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SKW-E 8. Installation instructions (Version: 64.10-0251GB01 08/02) . . . . . . . . . . . . . . . . . . . . . . 8-1 8.1. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 8.2. Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3 8.2.1. Sterling Single Conveyor Unit with 230 V-Output Port . . . . . . . . . . 8-3 8.2.2.
SKW-E 1. General instructions Version: 64.10-0251GB01 08/02 These operating instructions are to be used by all persons assigned activities connected with the equipment. SM3-641 » These instructions apply to all persons within the range of action of the equipment.
SKW-E 1.1. Warnings and symbols The following warnings and symbols are used in these operating instructions: » This symbol indicates danger to life! Fatal or serious injury is possible if the corresponding instructions, regulations or warnings are not observed. This symbol indicates that serious injury is possible if the corresponding instructions, regulations or warnings are not observed.
SKW-E 1.2. Explanations and information Various terms and designations are used in these operating instructions to ensure clarity. Therefore please note that the terms used in the text stand for the corresponding explanations listed below. • Equipment ”Equipment” can mean an individual unit, a machine or an installation. • Operating personnel The ”operating personnel” are persons operating the equipment on their own responsibility or according to instructions.
SKW-E 2. Safety instructions Version: 64.10-0251GB01 08/02 » These safety instructions apply to all persons within the range of action of the equipment. Please inform all persons within the range of action of the equipment of the direct and indirect hazards connected with the equipment. These operating instructions are to be used by all persons assigned activities connected with the equipment. Knowledge of the English language is prerequisite.
SKW-E 2.1. For your safety General The operating personnel of this equipment must be at least 16 years old. Please read these operating instructions carefully before taking into operation for the first time. Contact us should questions arise. This avoids injury and damage to equipment! These operating instructions must be kept available at all times at the place of operation of the equipment.
SKW-E Assembly Compare the connected loads with those of the mains supply. Danger of injury through electrical shock! When using lifting gear, please observe the pertaining regulations. Caution: Danger of accidents! Do not modify, add other equipment or change the design of the equipment without the approval of the manufacturer. Caution: Danger of accidents! Attachments not supplied by Sterling must be manufactured in accordance with safety regulation EN 294.
SKW-E Operation Appoint an equipment foreman to be responsible for the equipment. Ensure that the operating personnel are provided detailed instruction in the operation of the equipment. Improper operation results in danger of accidents! When the main switch is switched off for reasons pertaining to safety, it must be secured against unauthorized activation. Caution: Danger of accidents! Repair work may be carried out by trained personnel only.
SKW-E 2.2. For the operating safety of the equipment Never change settings if the consequences are not precisely known. Use only original Sterling spare parts. Please observe the maintenance schedule. Keep record of all maintenance and repair work. Please note that electronic components may be damaged by static discharge. Check all electrical connections for proper fit before the equipment is taken into operation for the first time and at regular intervals.
SKW-E 3. Start-up Version: 64.10-0251GB01 08/02 » This chapter is intended for operating personnel. Prerequisite for this chapter is general knowledge of the operation of conveying units. Also prerequisite for this chapter is that the functional description has been read and understood. Ensure in each case that the operating personnel are sufficiently informed. L The unit may only be operated with mounted conveying lines. F Check the compressed air supply (max. 6 bar system overpressure).
SKW-E 3.1. Adjusting the conveying ratio Adjust the conveying ratio according to your specific requirements. Version 1 By means of the arrow key, set the percentage of component 1 (= regrind). Example Desired conveying ratio: 40 % regrind and 60 % raw material. Press the arrow key until “40" appears on the display. F When conveying poorly flowing components, set higher values. Version 2 (optional) Set the percentage of component 1 (= regrind) by means of the control system of the conveying control.
SKW-E 3.2. Determining the switching cycle duration Measure the conveying time of the corresponding hopper. Consult the table (see chapter accessories). Look for the value in the column “conveying time”. Select a number of switching cycles. Press the percentage key. By means of the arrow key, select the desired switching cycle. Carry through one conveying procedure. If you are not satisfied with the result, check the setting and correct, if necessary. F No thick layers may form in the hopper loader.
SKW-E a.) Setting 50 seconds = 1 switching cycle per conveying procedure The SKW-E switches twice; it conveys regrind for 20 seconds and virgin material for 30 seconds. Significant zoning. b.) Setting 10 = 5 switching cycles per conveying procedure The SKW-E switches ten times; it conveys regrind for 4 seconds and virgin material for 6 seconds. Insignificant zoning. c.
SKW-E 3.3. Setting the switching cycles Version 1 Press the percentage key. By means of the arrow key, set the determined switching cycle. Check the result. If the result is not satisfactory, correct the setting. & If there are too many switching cycles, proper conveying is not possible. Version 2 (optional) Set the determined value by means of the control system of the conveying control. Observe the operating manual of the conveying control. Check the result.
SKW-E 4. Error and error correction Version: 64.10-0251GB01 08/02 » This chapter is intended for the operating personnel of the equipment. Prerequisite for this chapter is general knowledge of the operation of conveying units. The “Start-up” description must have been read and understood. Ensure in each case that the operating personnel are sufficiently informed. SM3-641 F The control unit displays no error messages.
SKW-E 5. Maintenance Version: 64.10-0251GB01 08/02 » This chapter is intended for persons with skills in electrical and mechanical areas due to their training, experience and received instructions. Personnel using the instructions in this chapter must be instructed of the regulations for the prevention of accidents, the operating conditions and safety regulations and their implementation. Ensure in each case that the personnel are informed accordingly.
SKW-E F Please observe the maintenance intervals. Before starting maintenance work, clean the equipment of oil, fuel or lubricants. Ensure that materials and incidentals required for operation as well as spare parts are disposed of properly and in an environmentally sound manner. Use only original Sterling spare parts. Keep record of all maintenance and repair procedures. 5.1. Maintenance intervals Daily: Check warning signs on equipment for good legibility and completeness.
SKW-E 6. Functional description Version: 64.10-0251D01 08/02 » This functional description is intended for the operating personnel of the equipment. Prerequisite for this functional description is general knowledge of conveyor systems operation. Ensure in each case that the operating personnel are sufficiently informed. The unit may only be operated with mounted conveying lines. F The unit may only be operated in conjunction with a conveying unit / conveying system.
SKW-E 6.1. General information The SKW-E has 2 input connecting branches (virgin material intake port, regrind intake port) and an output connecting branch leading to the conveyor unit. With the SKW-E it is possible to convey two components to a hopper loader. The SKW-E works in dependence on the conveying cycles of the conveyor unit. It is only in operation when material is conveyed.
SKW-E 6.2.1.1. Conveying ratio The conveying ratio between component 1 (= regrind) and component 2 (= virgin material) can be freely selected. The control setting refers to the conveying time of component 1 (= regrind). The conveying time of component 1 can be set from 0 to 99 % of total conveying time. Example Proportioning valve setting: 22 % Conveying ratio: 22 % component 1 and 78 % component 2 & Conveying ratio relates to conveying time, not to the amount of material conveyed. 6.2.1.2.
SKW-E Example: Conveying time: 90 seconds, cycle period = 15 seconds Calculation of switching cycles: conveying time = switching cycles cycle period F 90 s = 6 switching cycles 15 s Cycle period must always be high enough that both virgin material and regrind are conveyed properly. 6.2.2. Version 2 (optional) On the SKW-E housing, a terminal box is installed (optional: terminal box with 3 light-emitting diodes = LEDs for limit position monitoring).
SKW-E 7. Transport, Assembly and Storage Version: 64.10-0251GB01 08/02 » This chapter is intended for all operating personnel of the equipment. Personnel using these instructions must be instructed in the regulations for the prevention of accidents, the operating conditions and safety regulations and their implementation. Ensure in each case that the operating personnel are sufficiently informed.
SKW-E 7.1. Transport and Packing » Please ensure adequate carrying capacity of the lifting equipment. The equipment pass a rigorous operating test in the factory and are packed carefully to avoid transport damage. Please check packing on delivery for transport damage. The inlet and discharge flanges are sealed with plugs, so that no dirt can enter during transport. Plugs must be removed before assembly. Packing materials should be disposed of according to environmental laws or reused.
SKW-E 8. Installation instructions Version: 64.10-0251GB01 08/02 » These installation instructions are intended for persons with skills in electrical and mechanical areas due to their training, experience and received instructions. Personnel using these installation instructions must be instructed in the regulations for the prevention of accidents, the operating conditions and safety regulations and their implementation. Ensure in each case that the personnel are informed.
SKW-E 8.1. Installation Installation is possible in any position. The control system can be installed on the base plate or in a maximum distance of 3 m (9.84 ft.) from the unit. The control unit must be accessible at any time. Install the SKW-E in such manner that differences in conveying distances for the two components are avoided. Please note that the maximum ambient temperature near the SKW-E must not exceed +45°C (113°F). Remove the plugs from the pipe bends.
SKW-E 8.2. Electrical connection » The regulations of the local Electricity Board must be observed. Before connection to the electricity supply, it should be ensured that the supply voltage and the power frequency are in accordance with the data on the name plate of the machine. The electrical connection may only be carried out by Sterling service staff or trained personnel authorized by Sterling. It is not permitted for other persons to undertake the electrical connection.
SKW-E 8.2.2. Sterling Single Conveyor Unit with 24 V-Output Port The power consumption amounts to approx. 15 watt. The operating voltage amounts to approx. 24 V. Install the cable (2 x 0.75 mm², 30 cm long) from the solenoid valve of the pneumatic cylinder in the control system (please follow the connection diagram). Install the cable (3 x 0.75 mm², 1.8 m long) from the control system of the SKW-E in the control system of the single conveyor unit (please follow the connection diagram).
SKW-E 8.3. Compressed air supply For activating the pneumatic push-piston a compressed-air supply is necessary. Check compressed air piping for correct installation and assembly. Check fittings, length and quality of the hose connections for agreement with requirements. The operating pressure is 5-6 bar (72.52-87.02 PSI) (system overpressure). Check the compressed air supplied by the plant’s supply network. Adjust compressed air pressure to 5-6 bar (72.52-87.02 PSI) (system overpressure).
SKW-E 9. Technical data Version: 64.10-0251GB01 08/02 These operating instructions are to be used by all persons assigned activities connected with the equipment. SM3-641 » These instructions apply to all persons within the range of action of the equipment.
SKW-E Basic Version • Integrated, dustproofed controller with digital display • Voltage 24 V DC / 230 V AC, N, PE • Compressed air supply 4-6 bar system over pressure • Connection to a conveying control system or a conveyor • Regrind adjustable 0-100 % • Weight 500 g (1.10 lbs.
SKW-E 10. Spare Parts List Version: 64.10-0251GB01 08/02 » & This spare parts list is intended to be used only by trained personnel. Other persons are not permitted to modify or repair the equipment.
SKW-E 10.1. SKW-E Pos. Order no. Designation 1 84082 4/2 Solenoid valve 84080 Cable plug 84081 Noise reducer 2 85502 Pneumatic thruster SKW-E 40 2 82981 Pneumatic thruster SKW-E 50 3 37736 Push-piston SKW-E 40 (POM) 3 37720 Push-piston SKW-E 50 (POM) 4 83401 Controller 24 V 4 83400 Controller 230 V, 50 Hz O/N Controller 110V 60 Hz 1 2 3 4 SM3-641 10.2. Accessories F Please observe the operating manuals in chapter 11.
SKW-E 11. Accessories Version: 64.
SKW-E Conveying Number of switching cycles at cycle period (seconds) time (sec.
SKW-E 12. Electrical manual Version: 64.10-0 251GB01 08/02 » This electrical manual is intended to be used only by Sterling service personnel and trained personnel authorized by Sterling. Other persons are not permitted to modify or repair the equipment. o Connection diagram no.
SKW-E SM3-641 SKW-E, 24 V Electrical manual 12-2
SKW-E SM3-641 SKW-E, 110 V Electrical manual 12-3
