Related Manuals for Kracht BT Series
Summary of Contents for Kracht BT Series
-
Page 1: Basic Design Bt
D.0026290002 Operating instructions (Translation) Gear pump BT / BTH 88026290002-04 Englisch 2021-02-05... -
Page 2: Table Of Contents
Table of Content General About the documentation Manufacturer´s address Applicable documents Symbolism Safety Intended use Personnel qualification and training Basic safety instructions Basic hazards Device description Functional principle Basic design 3.2.1 Basic design BT 0 3.2.2 Basic design BT 1-7 3.2.3 Basic design BTH 1-3 3.2.4... - Page 3 Weights 4.6.1 Weight BT 4.6.2 Weight BTH Transport and storage General Transport Storage Installation Safety instructions for installation Noise reduction Mechanical installation 6.3.1 Preparation 6.3.2 Pumps with free shaft end 6.3.3 Coupling Type "R." Connection lines 6.4.1 General 6.4.2 Suction line 6.4.3 Pressure line 6.4.4...
- Page 4 Repairs 10.1 Safety instructions for repair 10.2 General 10.3 Detecting and eliminating failures...
-
Page 5: General
If you have any questions about these operating instructions, please contact the manufacturer. 1.2 Manufacturer´s address KRACHT GmbH Gewerbestraße 20 DE 58791 Werdohl phone: +49 2392 935-0 fax: +49 2392 935-209 email: info@kracht.eu... -
Page 6: Symbolism
Gear pump BT / BTH 1.4 Symbolism DANGER Identification of an immediate hazard, which would result in death or severe bodily injury if not avoided. WARNING Identification of a potential medium risk hazard, which would lead to death or severe bodily injury if not avoided. CAUTION Identification of a low risk hazard, which could lead to minor or medium bodily injury if not avoided. -
Page 7: Safety
Gear pump BT / BTH 2 Safety 2.1 Intended use The device has been designed for operation with fluid. Dry operation is not permitted. The device may be operated in filled condition only. The medium must be compatible with the materials used in the device. The chemical competence is necessary for this. -
Page 8: Basic Hazards
Gear pump BT / BTH 2.4 Basic hazards DANGER Hazardous fluids! Danger of death when handling hazardous fluids. Comply with the safety data sheets and regulations on handling haz- ardous fluids. Collect and dispose of hazardous fluids so that no hazards arise for people or the environment. - Page 9 Gear pump BT / BTH WARNING Failure of load-carrying parts due to overload! Danger of injury from flying parts. Danger of injury from spurting fluids. Use only connections and lines approved for the expected pressure range. Securely prevent exceeding the permissible pressure, e.g. by using pressure relief valves or rupture discs.
-
Page 10: Device Description
Gear pump BT / BTH 3 Device description 3.1 Functional principle BT / BTH series pumps are external gear pumps that work according to the positive displacement principle. S = Suction connection P = Pressure connection When rotated, two gearwheels meshing together produce a volume enlarge- ment as a result of the opening of the tooth spaces on the suction side (S), so that medium can flow in and so that a corresponding volume is displaced simultaneously by immersion of the teeth into the filled tooth spaces on the... - Page 11 Gear pump BT / BTH Gear pump BTH BTH series pumps are ideal for conveying high-viscosity media that must be heated to be capable of flow, e.g. bitumen or wax. The housing has a double-wall design (jacket heater). The working chamber of the pump is heated by the heating medium (such as heat-transfer oil, water or steam), which will be fed and discharged via dedicated inlets and outlets.
-
Page 12: Basic Design
Gear pump BT / BTH 3.2 Basic design 3.2.1 Basic design BT 0 Explanation 1. Cover 5. Packing ring 2. Liquid gasket 6. Gland compression ring 3. Driven shaft 7. Cap nut 4. Housing 8. Driving shaft 2021-02-05 88026290002-04... - Page 13 Gear pump BT / BTH 3.2.2 Basic design BT 1-7 Explanation 1. Front cap 6. Driving shaft 2. Plain bearing bush 7. Gland cap 3. Liquid gasket 8. Packing ring 4. Driven shaft 9. Gland follower 5. Housing 88026290002-04 2021-02-05...
-
Page 14: Basic Design Bth
Gear pump BT / BTH 3.2.3 Basic design BTH 1-3 Explanation 1. End cover 7. Gland cap 2. End cover 8. Packing ring 3. Driving shaft 9. Gland follower 4. Housing 10. Gasket 5. Driven shaft 11. Gasket 6. Plain bearing bush 2021-02-05 88026290002-04... -
Page 15: Heating Connections Bth
Gear pump BT / BTH 3.2.4 Heating connections BTH = Heating connection Inlet = Heating connection Outlet 88026290002-04 2021-02-05... -
Page 16: Rotation And Delivery Direction
S = Suction side P = Pressure side BT series pumps work independently of the rotational direction. 2021-02-05 88026290002-04... -
Page 17: Type Key
Gear pump BT / BTH 3.4 Type key 3.4.1 Type key BT Available design variants BT /... /... /... /... Explanation of type key BT 1. Serie 2. Size = 6,9 cm³/r = 197 cm³/r = 32 cm³/r = 254 cm³/r = 43 cm³/r = 352 cm³/r = 91 cm³/r = 494 cm³/r... -
Page 18: Type Key Bth
Gear pump BT / BTH Explanation of type key BT 8. Seal type Gland packing Arolan II Gland packing HT 98 Liquid gasket Loctite 540 (Housing) Liquid gasket Loctite 540 (Housing) 9. Special number for special versions section 3.5 “Important special numbers” 3.4.2 Type key BTH Available design variants BTH /... -
Page 19: Important Special Numbers
Gear pump BT / BTH 3.5 Important special numbers Special Serie/Size Description number Ni/SiC dispersion anti-wear/corrosion layer on: BT 1 - 7 Housing; Gears; Bearing bush BT 1 - 7 Drive shaft, bottom mounted Ni/SiC dispersion anti-wear/corrosion layer on: BT 1 - 7 Gears;... -
Page 20: Technical Data
Gear pump BT / BTH 4 Technical data 4.1 General information General information BT / BTH Design External gear pump Fixing type Foot mounting End of drive shaft Cylindrical Housing connection/Connec- section 4.2 “Housing connection/Connection type” tion type Mounting position Horizontal ν 76 mm Viscosity ν... -
Page 21: Housing Connection/Connection Type
Gear pump BT / BTH 4.2 Housing connection/Connection type 4.2.1 Housing connection BT Size Housing connection Whitworth pipe thread G 1/4" Whitworth pipe thread G 1/2" Whitworth pipe thread G 3/4" Whitworth pipe thread G 1" 3 /25 Whitworth pipe thread G 1 1/4" Whitworth pipe thread G 1 1/2"... -
Page 22: Viscosity - Rotation Speed Assignment
Gear pump BT / BTH 4.3 Viscosity - Rotation speed assignment Kinematic viscosity ν [mm 1000 2000 3000 6000 10000 20000 30000 Recommended rpm n [rpm] Select the speed of rotation so that complete filling of the pump is ensured. This is given if the pressure on the suction side does not fall below the permissible pressure p e min. -
Page 23: Weights
Gear pump BT / BTH 4.6 Weights 4.6.1 Weight BT Size Weight [kg] 4.6.2 Weight BTH Size Weight [kg] Housing connection: Z; F Housing connection/Connection type: G 1/55 1/105 2/100 2/130 3/150 88026290002-04 2021-02-05... -
Page 24: Transport And Storage
Gear pump BT / BTH 5 Transport and storage 5.1 General ● After receipt, check the device for transport damages. ● If transport damage is noticed, report this immediately to the manufac- turer and the carrier. The device must then be replaced or repaired. ●... -
Page 25: Storage
Gear pump BT / BTH To transport the device , eyebolts can be screwed into the flange connec- tions. 5.3 Storage The device's function is tested in the plant with mineral hydraulic oil. Then all connections are closed. The remaining residual oil preserves the interior parts for up to 6 months. - Page 26 Gear pump BT / BTH NOTICE Corrosion/chemical impact Improper storage can render the device useless. Protect endangered surfaces by means of suitable conservation meas- ures. Comply with recommended storage conditions. Recommended storage conditions Storage temperature: 5 °C - 25 °C Relative air humidity: <...
-
Page 27: Installation
Gear pump BT / BTH 6 Installation 6.1 Safety instructions for installation DANGER Hazardous fluids! Danger of death when handling hazardous fluids. Comply with the safety data sheets and regulations on handling haz- ardous fluids. Collect and dispose of hazardous fluids so that no hazards arise for people or the environment. -
Page 28: Noise Reduction
Gear pump BT / BTH WARNING Failure of load-carrying parts due to overload! Danger of injury from flying parts. Danger of injury from spurting fluids. Depressurise the device and all connection lines before doing any work. Securely prevent the restoration of pressure while working on the de- vice. - Page 29 Gear pump BT / BTH ● Position the pumps and the drive with respect to each other. ○ Comply with the permissible mounting position. ○ Comply with the permissible direction of rotation. When operating units with gland packings, make sure that the packing is accessible without difficulty to allow for easy re-stressing of the packing ring.
-
Page 30: Coupling Type "R
Gear pump BT / BTH 6.3.3 Coupling Type "R." Claw couplings Type "R." are torsionally flexible and transmit the torque pos- itive. They are fail-safe. The vibrations and impacts that occur during opera- tion are effectively dampened and reduced. Claw coupling Type "R." NOTICE Coupling breakage or increased wear An overload can lead to premature failure of the coupling. - Page 31 Gear pump BT / BTH Assembly data Explanation 1. Shaft projects into spi- 4. Coupling halve 2. Coupling halve 5. Shaft with parallel key projects into spider 3. Spider 6. Setscrew When installing the coupling, maintain the "E" gap dimension so that the spi- der remains free during operation.
- Page 32 Gear pump BT / BTH For assembly, the coupling halves can be heated to approx. 80 °C and pushed onto the shaft ends while warm. CAUTION Hot surfaces! Burn injury to skin if touched. Wear protective gloves at temperatures ≥48°C. ●...
- Page 33 Gear pump BT / BTH Displacement values Axial displacement Radial displacement Angular displacement ΔK ΔK ΔK /ΔK ≙ L ΔK Coupling size 19/24 24/28 28/38 38/45 42/55 48/60 55/70 65/75 75/90 Coupling clearance E [mm] +1.0 +1.2 +1.4 +1.5 +1.8 +2.0 +2.1 +2.2...
-
Page 34: Connection Lines
Gear pump BT / BTH Displacement combinations Examples for displacement combinations shown in the photo opposite: Example 1: ΔK = 30 % ΔK = 70 % Example 2: ΔK = 60 % ΔK = 40 % ΔK + ΔK ≤ 100 % 6.4 Connection lines 6.4.1 General WARNING... -
Page 35: Suction Line
Gear pump BT / BTH 6.4.2 Suction line A less than optimally planned suction line can lead to increased noise emis- sion, cavitation as well as reduction of the delivery rate (caused by not complete filling of the pump). When designing the line, take the following points into consideration: ●... -
Page 36: Pressure Line
Gear pump BT / BTH It is appropriate to employ a foot valve or a non-return valve in case of longer suction lines that can run dry while the pump is at rest. These must have been designed for use in suction lines and should offer as low a flow resistance as possible. - Page 37 Gear pump BT / BTH DANGER Rotating parts! Danger of death due to body parts, hair or clothing getting trapped or en- tangled. Before all work, ensure that existing drives are voltage-free and pres- sure-free. Securely prevent restarting during all work. WARNING Failure of load-carrying parts due to overload! Danger of injury from flying parts.
- Page 38 Gear pump BT / BTH Suction side Pressure side Leak oil hole Shown rotational direction: Clockwise Explanation 1. End cover 8. Gasket 2. End cover 9. Hexagonal screw 3. Housing 10. Gasket 4. Gland cap 11. Hexagonal screw 5. Gland follower 12.
- Page 39 Gear pump BT / BTH ● Untighten gland packing. [13] ● Loose fastening screws. [12] (8x) ● Pull gland cap with the installed gland follower and gland packing from the bearing cap. [4 + 5 + 2.2] ● Loose fastening screws. [11] (10x) ●...
-
Page 40: Operation Start-Up
Gear pump BT / BTH 7 Operation start-up 7.1 Safety instructions for start-up DANGER Hazardous fluids! Danger of death when handling hazardous fluids. Comply with the safety data sheets and regulations on handling haz- ardous fluids. Collect and dispose of hazardous fluids so that no hazards arise for people or the environment. -
Page 41: Further Operation Start-Up
Gear pump BT / BTH When using a gland packing, attention must be paid to its running-in charac- teristics. It may take hours or even days for the amount of leakage to reach constant levels. After every start-up of the shaft or re-tensioning of the gland packing, be sure to wait a fairly long time before further adjustments are made. - Page 42 Gear pump BT / BTH ● If necessary, loosen the hexagonal nuts of the gland follower and re- tighten until hand-tight. ● Allow the device start without or with a low pressure load (jog mode). ○ Flow should have developed after 30 s at the latest. ○...
-
Page 43: Removal
Gear pump BT / BTH 8 Removal 8.1 Safety instructions for removal DANGER Hazardous fluids! Danger of death when handling hazardous fluids. Comply with the safety data sheets and regulations on handling haz- ardous fluids. Collect and dispose of hazardous fluids so that no hazards arise for people or the environment. -
Page 44: Removal
Gear pump BT / BTH NOTICE Blocking of the device through hardening medium Hardening medium can mechanically jam the device and make it unusable. Clean device immediately after operting with a hardening medium. 8.2 Removal ● Depressurise and de-energize the system. ●... -
Page 45: Maintenance
Gear pump BT / BTH 9 Maintenance 9.1 Safety instructions for maintenance DANGER Hazardous fluids! Danger of death when handling hazardous fluids. Comply with the safety data sheets and regulations on handling haz- ardous fluids. Collect and dispose of hazardous fluids so that no hazards arise for people or the environment. -
Page 46: Maintenance Instructions
Gear pump BT / BTH ● Perform maintenance according to specification. ● Replace defective and worn components. ● If required, request spare parts lists and assembly drawings from the manufacturer. ● Document the type and scope of the maintenance work along with the operating data. - Page 47 Gear pump BT / BTH Maintenance recommendations Gear pump Interval Maintenance work Employ- Duration approx. Inspection: Discharge flow Inspection: Operating pressure Inspection: Fluid temperature Firstly: Inspection: Device temperature after max. 24 h Inspection: Add-on valve function (if existing) Inspection: Check potential equalisation for firm seating and functionality (if existing) Inspection: Condition of operating fluid Audiometric monitoring: Unusual noise...
- Page 48 Gear pump BT / BTH 10 Repairs 10.1 Safety instructions for repair DANGER Hazardous fluids! Danger of death when handling hazardous fluids. Comply with the safety data sheets and regulations on handling haz- ardous fluids. Collect and dispose of hazardous fluids so that no hazards arise for people or the environment.
- Page 49 Gear pump BT / BTH Elimination of damage Elimination of the primary causes and replacement or repair of defective components. The repair is generally made by the manufacturer. Repairs by manufacturer ● Before returning the device, fill in the return notification form. The form can be filled in online and is available as a pdf file download.
- Page 50 Gear pump BT / BTH Repair by equipment builder/operator If corresponding expertise and sufficient equipment is available, the equip- ment builder/operator can also make the repairs. Please consult the manu- facturer about this. ● If required, request spare parts lists and assembly drawings from the manufacturer.
- Page 51 Gear pump BT / BTH 10.3 Detecting and eliminating failures Failure Potential causes Possible measures 1.1 Increased noise Excessive negative pressure Check suction line design (not complete filling of the Pump cavitation Use noise-optimised pump pump) Suction line plugged Clean the suction line Suction filter plugged or too Clean suction filter or use a small...
- Page 52 Gear pump BT / BTH Failure Potential causes Possible measures Pump does not suck Dry run Fill pump and the suction line with medium. Minimum filling level in the Top up medium supply tank undercut False direction of rotation of Correct the direction of rota- the pump tion...
- Page 53 Gear pump BT / BTH Failure Potential causes Possible measures Insufficient pressure Excessive negative pressure Check suction line design (not complete filling of the Insufficient pumping flow pump) rate Viscosity too high Provide pre-filling pump Speed of the pump is too low Check the pump design During frequency inverter operation: Check the opera-...
- Page 54 Gear pump BT / BTH Failure Potential causes Possible measures Leakages Poor maintenance Comply with maintenance plan Seal failure Replace seals Mechanical damage Replace seals Thermal overload Check the operating datas Replace seals Pressure too high Check the operating datas Replace seals Gas content in medium too Check the operating datas...
- Page 55 Gear pump BT / BTH Failure Potential causes Possible measures Motor protection switch Driving power too low Check the drive design tripped Motor incorrectly connected Check motor connection Phase failure Check feed/supply Current consumption too high Check the operating datas Check direction of rotation Motor circuit breaker incor- Check the operating datas...
Need help?
Do you have a question about the BT Series and is the answer not in the manual?
Questions and answers