Table of content Kracht GmbH Table of content 1 General ............................1.1 About the documentation..........................1.2 Manufacturer address ............................ 1.3 Other applicable documents ........................1.4 Symbols................................2 Safety............................2.1 Intended use ..............................2.2 Personal qualification ............................. 2.3 Basic safety instructions ..........................
1 | General Kracht GmbH 1 General 1.1 About the documentation These operating instructions describe the installation, operation and maintenance of the follow- ing product: Gear type flow meters VCA/VCN/VCG These operating instructions are an integral part of the product and must be kept in the imme- diate vicinity of the product and accessible to the personnel at all time.
Kracht GmbH General | 1 1.4 Symbols DANGER Identification of an immediate hazard, which can lead to death or severe bodily injury if not avoided. WARNING Identification of a potential medium risk hazard, which can lead to death or severe bodily injury if not avoided.
2 | Safety Kracht GmbH 2 Safety 2.1 Intended use 1. The product has been designed for operation with fluids. Dry operation is not permitted. 2. The product may only be operated when completely filled. 3. The fluid must be compatible with the materials used in the product. Chemical expertise is required for that.
Kracht GmbH Safety | 2 2.3 Basic safety instructions NOTICE Basic safety instructions Non-compliance can lead to hazards for people and the unit. a) Follow existing regulations for accident prevention and safety at work as well as the internal regulations of the operating company.
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2 | Safety Kracht GmbH WARNING Failure of pressure bearing parts due to overload Risk of injury from flying parts. Risk of injury due to splashing fluids. a) Before carrying out any work, depressurise the product and all connection pipes.
Kracht GmbH Device description | 3 3 Device description 3.1 Functional principle 3.1.1 Gear type flow meter The measuring unit is driven by the flow of fluid based on the principle of a gear motor. The gears run without contact in the measuring chamber. The bearing elements are low friction ball bearings or plain bearings.
Kracht GmbH Technical data | 4 4 Technical data 4.1 General 4.1.1 Gear type flow meter General information Design Gear motor Housing connection Plate structure / Pipe thread Mounting position Flow direction Viscosity Operating pressure Nominal sizes [} 14] Permissible pressure loss ∆p...
Kracht GmbH Technical data | 4 4.3 Permissible temperature range Sealing material Fluid temperature ϑ ϑ [°C] ϑ [°C] m min m max EPDM FEP with FKM-core ( till 2019) VCG: -15 VCG: 120 FEP with silicone-core (ab 2020) Sealing material Ambient temperature ϑ...
4 | Technical data Kracht GmbH 4.4 Material data 4.4.1 Gear type flow meter Product name Nominal 0,04 Bearing Materials Aluminium (Al) Hous- Aluminium (Al) ing / Al Mg Si F30 Al Mg Si F30 Cover (hartcoatiert) Stain- Stain- Case-...
Kracht GmbH Technical data | 4 4.5 Weight Nominal Product name Weight [kg] Pipe connection Plate structure 0.04 13.2 4.6 Dimensions The dimensions of the product are given in the technical data sheets. 88025530002-12...
5 | Transport and storage Kracht GmbH 5 Transport and storage 5.1 General a) After receiving the delivery, check the product for transport damage. b) If transport damage is found, the manufacturer and the transport company must be notified immediately. The product must then be replaced or repaired.
Kracht GmbH Transport and storage | 5 If high humidity or an aggressive atmosphere is to be expected, additional suitable corrosion prevention measures must be taken. NOTICE Storage in corrosion protection bags (VCI) for maximum 6 months. ATTENTION Corrosion/chemical attack Improper storage can make the product unusable.
6 | Installation Kracht GmbH 6 Installation 6.1 Safety instructions for installation DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment.
Kracht GmbH Installation | 6 WARNING Failure of pressure bearing parts due to overload Risk of injury from flying parts. Risk of injury due to splashing fluids. a) Use only connections and lines approved for the expected pressure range. b) Securely prevent the permissible pressures from being exceeded, e.g. by using pressure re- lief valves or bursting discs.
6 | Installation Kracht GmbH 6.2.2 Plate connection CAUTION Hot surfaces Burns of the skin on contact. a) Take measures to prevent accidental touching of hot surfaces (< 60 °C). ATTENTION Contamination or small parts Damage or malfunctions of the product and the system caused by dirt or small parts.
Kracht GmbH Installation | 6 External manufacturer connection plate/valve block Nominal 0.025 0.04 Evenness [µm] Roughness height R [µm] NOTICE Use only connection plates or valve blocks from external manufacturers with specified surface and shape tolerances. 6.2.3 pipe connection a) Clean all lines.
6 | Installation Kracht GmbH 6.3 Electrical connection 6.3.1 Preamplifier (S, H, K) Electrical data Pre amplifier 24 V 12 V Number of measuring chan- nels UB = 24 V DC ± 20 % UB = 12 V DC ± 20 %...
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Kracht GmbH Installation | 6 6.3.1.1 Connection plug arrangement The terminal assignment for channel 1 and channel 2 influences the direction of rotation dis- played by the measuring element. Brown channel 1 Green channel 2 Yellow 0 Volt White Signal generator, channel 1...
7 | Commissioning Kracht GmbH 7 Commissioning 7.1 Safety instructions for start-up DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment.
Kracht GmbH Commissioning | 7 7.3 Additional commissioning a) Open existing shut-off elements in front of and behind the product. b) Set pressure relief valves installed in the system to the lowest opening pressure. c) Run the product pressureless or at low pressure for a few minutes.
8 | Removal Kracht GmbH 8 Removal 8.1 Safety instructions for disassembly DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment.
Kracht GmbH Removal | 8 CAUTION Hot surfaces Burns of the skin on contact. a) At temperatures ≥48 °C, allow the product to cool first. ATTENTION Blocking of the product due to curing media Curing media can mechanically block the product and make it unusable.
9 | Maintenance Kracht GmbH 9 Maintenance 9.1 Safety instructions for maintenance DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment.
Kracht GmbH Maintenance | 9 9.2 Maintenance work Checking and documentation of the operating data Regular checking and documentation of all operating data helps to detect faults at an early stage. – Perform the maintenance work according to specifications. – Replace defective or worn components.
9 | Maintenance Kracht GmbH a) Undo the fastening screws. b) Remove the cover from the housing. c) Remove the gears from housing. d) Remove the bearing journals from the housing. e) Clean the product. f) Replace O-ring. g) Insert bearing journal and gears into the housing.
Kracht GmbH Maintenance | 9 9.4 Maintenance table 9.4.1 Maintenance table Additional in- formation 9.4.2 Check the rate of flow 9.4.3 Check the operating pressure 9.4.4 Check the media temperature 9.4.5 Check the device temperature 9.4.6 Check the equipotential bonding 9.4.7...
9 | Maintenance Kracht GmbH 9.4.3 Check the operating pressure The operating pressure is indicated by the pressure gauges. – If there is no operating pressure, check the individual components of the product. – Comply with the product-specific data sheets/operating instructions.
Kracht GmbH Maintenance | 9 9.4.12 Visual check of the condition of housing parts Look for damage to the housing. 9.4.13 Visual check of the condition of the bearings Look for damage to the bearings. Cleaning - deposits in the measuring device [} 31] 9.4.14 Replacing other seals...
10 | Repair Kracht GmbH 10 Repair 10.1 Safety instructions for repairs DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment.
Kracht GmbH Repair | 10 10.2 General Corrective maintenance includes: 1. Troubleshooting Finding damage, determining and localising the cause of the damage. 2. Damage repair Removing the primary causes and replacing or repairing defective components. Repairs are generally carried out by the manufacturer.
10 | Repair Kracht GmbH 10.3 Fault table If the product does not function properly, the electrical components should be tested first. The measuring instrument must remain in operation for this. Fault Potential causes Possible measures LED display Both LED displays flash -how-...
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