Operating Instructions
Two component proportioning valve SKW
SM3-640
Sterling Material Processing
SM3-640
SKW
Sterling Material Processing
5200 West Clinton Ave.
Milwaukee, WI 53223
Telephone (414) 354-0970
Fax: (414-354-6421
www.sterlco.com
Parts & Service:
Telephone (800) 423-3183
Edition: 04/97
These operating instructions are for:
Serial number:
Built in:
Date of delivery:
Number of delivery:
Date of commissioning:
Location:
Group of machines:
2
SKW
SM3-640
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.
Copying, translation or publication in any form except for personal use of purchaser requires approval from Sterling Material Processing.
All rights reserved.
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SKW
Table of contents
1. Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1. Warnings and symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2. Explanations and information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.3. For your safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.4. For the operating safety of the equipment . . . . . . . . . . . . . . . . . . 13
2. Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.1. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2. Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.2.1. Connection to a single conveyor unit
SSE 2&5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.2.2. Connection to a vacuum receiver unit
SSK 05, 1, 3, 5 & 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2.2.3. Connection to a conveying system control . . . . . . . . . 19 2.3. Compressed air supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3. Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.1. General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.2. Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.2.1. SKW Version 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.2.1.1. Conveying ratio . . . . . . . . . . . . . . . . . . . . . . . 24 3.2.1.2. Switching cycles . . . . . . . . . . . . . . . . . . . . . . 25 3.2.2. SKW Version 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4. Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.1. Adjusting the conveying ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2. Determining the switching cycle duration . . . . . . . . . . . . . . . . . . 29 4.3. Setting the switching cycles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
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5. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1. Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.2. Checking for smooth operation . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6. Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.1. Dimension sheet SKW 40/50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.2. Dimension sheet SKW 65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7. Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.1. Spare parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
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1. Safety instructions
»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.
Ensure in each case that the operating personnel are familiar with the operating instructions and the function of the equipment.
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Safety instructions 6
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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.
L
F
&
$
This symbol indicates that serious injury is possible if the corresponding instructions, regulations or warnings are not observed.
This symbol indicates that extensive damage to equipment is possible if the corresponding instructions, regulations or warnings are not observed.
This symbol indicates information important for becoming familiar with the equipment, i.e. technical correlations.
This symbol indicates that a technical term is explained at this point.
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Safety instructions 7
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1.2. Explanations and information
Various terms and designations are used frequently 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 (minimum age: 16).
∙Operator
The “operator” of the equipment (production manager, foreman, etc.) is the person responsible for all production sequences. The operator instructs the operating personnel of what is to be done.
∙Operating instructions
The “plant operating instructions” describe the interaction of the equipment, production sequences or methods. The plant operating instructions must be compiled by the operator of the equipment.
∙Equipment foreman
When several operating personnel work on one machine, the “equipment foreman” coordinates the sequences. The equipment foreman must be appointed by the operator.
∙Trained personnel
“Trained personnel” are persons who, due to their training, are authorized to carry out the required work in good practice.
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1.3. For your safety
∙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. All points are to be observed. 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.
Improper operation results in danger of accidents!
∙Please note that, for reasons of clarity, not all conceivable cases regarding operation or maintenance of the equipment can be covered in these operating
instructions.
∙Please observe all safety instructions and warnings on the equipment. This avoids injury and damage to equipment!
∙All work on the equipment is to be carried out by persons whose qualifications are specified in the pertaining chapters of the operating instructions.
Improper operation results in danger of accidents!
∙The proper working clothes are to be worn during any work on the equipment. This avoids injury!
∙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!
∙Please note that all installation, start-up and maintenance procedures are to be carried out by qualified, trained personnel only.
Improper operation results in danger of accidents!
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∙The local regulations and requirements pertaining to the equipment must be observed.
∙The “5 safety rules” as provided in DIN VDE 0105, Section 1, must be observed for all work carried out on the equipment.
∙Disconnect electrical components from the mains supply before work is carried out on these components.
Caution: Danger to life through electrical shock!
∙Do not modify, add other equipment or change the design of the equipment without the approval of the manufacturer.
Caution: Danger of accidents!
∙Compile detailed plant operating instructions based on the supplied operating instructions for the sequence of procedures to be carried out on this equipment.
Improper operation results in danger of accidents!
∙Appoint an equipment foreman to be responsible for the equipment.
∙Ensure that the operating personnel are thorough training 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!
∙Before starting maintenance work, appoint a supervisor.
∙Inform the responsible personnel before maintenance work on the system is started.
Caution: Danger of accidents!
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∙ Disconnect the equipment from mains supply before starting maintenance procedures to ensure that it cannot be switched on unintentionally.
Caution: Danger of accidents!
∙ Repair work may be carried out by trained personnel only. Caution: Danger of accidents!
∙ Never operate the equipment when partially dismantled.
Caution! Limbs may be caught in machinery; danger of electrical shock!
∙ In case of malfunction, shut down the equipment immediately. Have malfunctions corrected immediately.
Caution: Danger of accidents!
∙ The equipment is intended only for conveying granulated plastics and regrinds. Other use of the equipment is contrary to its specifications.
∙ This equipment is not suitable for food processing.
∙ Please observe that sound levels exceeding 85 dB(A) may lead to health problems after prolonged exposure. Use suitable ear protection.
This prevents ear damage!
∙ Attachments not supplied by Sterling must be manufactured in accordance with safety instruction EN 294.
Caution: Danger of accidents!
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∙ Check all pipes, hoses and screwed connections for leaks and damage on a |
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regular basis. Correct such damages immediately. |
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Caution: Danger of accidents! |
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∙ Depressurize all compressed air piping before maintenance work. |
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Danger! Limbs may be caught in machinery! |
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Never operate the equipment without elbows. |
640 |
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SM3 |
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Danger! Limbs may be caught in machinery! |
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Safety instructions 11
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∙The equipment may only be operated when all appertaining components are connected properly and comply with applicable regulations.
∙The equipment may only be operated in conjunction with a conveyor unit.
∙Observe the safety instructions for connected equipment.
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Safety instructions 12
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1.4. For the operating safety of the equipment |
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∙ Never change settings if the consequences are not precisely known. |
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∙ Use only original Sterlingspare parts. |
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∙ Observe the maintenance instructions. |
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∙ Keep record of all maintenance and repair procedures. |
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∙ Please note that electronic components may be damaged by static discharge. |
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∙ Check all electrical connections for secure fit before the equipment is taken into |
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operation and at regular intervals. |
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∙ Never adjust sensors without exact knowledge of their function. |
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∙ Please note that the maximum ambient temperature must not exceed 45 °C |
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(113°F). |
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∙ Align the suction tubes of the individual components equally. |
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∙ Please note that the set conveying ratio determines the conveying time. |
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∙ Please note that compressed air supply is required for the operation of the SKW. |
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∙ Never set a higher operating pressure than 6 bar (87.02 PSI) for the SKW (system |
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overpressure). |
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∙ Check whether the regrind is connected to the left-hand intake port (1) of the |
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SKW. |
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∙ Install VA-steel pipe bends when conveying abrasive material (SKW 40, |
SKW 50). |
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SM3 |
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∙Please note that SKW 65 may not be used for conveying abrasive materials.
∙Please note that the SKW can only be used in conjunction with a conveyor unit.
∙Please observe the operating instructions of the connected conveyance control system.
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Safety instructions 14
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2. Installation instructions
»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.
The installation instructions provided in the corresponding operating instructions apply for all connected equipment.
Observe safety regulations with regard to lifting gear handling
All installation work must be carried out with the equipment disconnected from electrical power and compressed air supply.
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SM3-640
For installation work taking place at heights of over approx.1829mm (6 ft), use only ladders or similar equipment and working platforms intended for this purpose. At greater heights, the proper equipment for protection against falling must be worn.
Use only suitable lifting gear which is in proper working order and load suspension devices with sufficient carrying capacity. Do not stand or work under suspended loads!
Use suitable workshop equipment.
Installation instructions 15
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Install the equipment such that all parts are easily |
accessible; this facilitates maintenance and repair work. |
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Installation instructions 16
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