To connect to a network of Taco penciled him a wire or cable is cut and attached to the ends of the excretory or terminal screws in the inlet box. Some types of pump rotors have the box for fixing and commissioning of cables, steel pipes, metal hoses and other cable carve and finish steel pipes, flexible metal hose, etc., outside input boxes can not, because the ends of wires or cables in this case will be protected and can be damaged. Explosion-proof Taco pump rotors are connected to the network by entering into a box of wire and cable cross-section of 25 mm2 with a rubber or paper insulation.
If you connect a cable, whose cross section greater than 25 mm2, in front of the pump rotor install a special adapter box, which operates cable preparation. Wires and cables with a single-current-carrying conductors attached to the terminal screws of the Grundfos pump rotor directly to the inlet box (using bent at the end of the vein rings), and the wires and cables with stranded conductors supplying tips, fixed on the veins pressing or soldering. Tip and ring wear on the screws, opening the box and tighten the two nuts and washers, making sure the reliability of mounting screws and contact the correct jumper settings, connecting pump rotor windings in a star or triangle, depending on the rated voltage of the pump rotor and the network. Then the inlet box closed with a lid or cover to avoid accidental touching of naked, although isolated, conductors, and also keep water and foreign objects on them.
Showing posts with label pump. Show all posts
Showing posts with label pump. Show all posts
Friday, November 12, 2010
Grundfos dry pump rotor
Mechanical seals
The basis of design of the mechanical seal are two rings with carefully polished surfaces. They are pressed together by a spring, and work together. CTS are dynamic seals and are used for sealing a rotating shaft in a fluid at high operating pressures. Grundfos is composed of two highly polished wear rings (for example, silicone or graphite), which are pressed together by axial forces.
One ring (dynamic) rotates with the shaft, while the other ring (static) still fixed into the body. Between the sliding surfaces a thin film of water that serves as lubrication and cooling. Depending on the mode of operation of the pump are several possible types of friction mating surfaces: a mixed friction, boundary friction or dry friction, the latter (which occurs at no lubricating film) causes environment destruction of the surfaces.
The service life depends on operating conditions such as composition and temperature of the working fluid.
Mechanical Seals
The materials for seals use high quality yarn from synthetic fibers such as Kevlar ® or Twaron ®, PTFE, porous graphite yarn, yarn of synthetic mineral fibers and natural fibers such as hemp, cotton or ramie.
Material for the seals is available in the form of threads or compacted coils in dry form or with special impregnation depending on the destination. If the material is purchased in the form of threads, you must first form a ring and give it shape. Then, the ring gland is wrapped around the pump shaft and tightened using crimp sleeves.
The basis of design of the mechanical seal are two rings with carefully polished surfaces. They are pressed together by a spring, and work together. CTS are dynamic seals and are used for sealing a rotating shaft in a fluid at high operating pressures. Grundfos is composed of two highly polished wear rings (for example, silicone or graphite), which are pressed together by axial forces.
One ring (dynamic) rotates with the shaft, while the other ring (static) still fixed into the body. Between the sliding surfaces a thin film of water that serves as lubrication and cooling. Depending on the mode of operation of the pump are several possible types of friction mating surfaces: a mixed friction, boundary friction or dry friction, the latter (which occurs at no lubricating film) causes environment destruction of the surfaces.
The service life depends on operating conditions such as composition and temperature of the working fluid.
Mechanical Seals
The materials for seals use high quality yarn from synthetic fibers such as Kevlar ® or Twaron ®, PTFE, porous graphite yarn, yarn of synthetic mineral fibers and natural fibers such as hemp, cotton or ramie.
Material for the seals is available in the form of threads or compacted coils in dry form or with special impregnation depending on the destination. If the material is purchased in the form of threads, you must first form a ring and give it shape. Then, the ring gland is wrapped around the pump shaft and tightened using crimp sleeves.
Friday, July 23, 2010
The main type of current pump
The main type of modern pump - Centrifugal. Centrifugal pumps are the most common and are designed for cold or hot (t °> 60 ° C) water, viscous or corrosive liquids (acids and alkalis), waste water, mixtures of water with soil, ash and slag, peat, crushed coal and etc. Their action is based on the transfer of kinetic energy from a rotating impeller so fluid particles, which are located between its blades. Under the influence of the centrifugal force that F particles supplied to the medium from the rotor, the pump housing to continue, and in their place under the pressure of air entering the new particles, ensuring continuous operation of the pump.
Monday, July 19, 2010
Pump
The pump unit (hydraulic machine, apparatus or device) to move the pressure (suction and discharge), mainly liquid drops as a result of the message to her external energy (potential and kinetic).
Sunday, July 18, 2010
The main parameter of the pump
The main parameter of the pump - the amount of fluid being transported in unit time, ie, carried out flow rate Q. For bolshinstvanasos critical technical parameters also include: developed pressure p or the corresponding pressure H, N, and power consumption efficiency h.
Thursday, April 1, 2010
Taco Pumps Installation Tips
The pump should always be installed with the shaft, oriented horizontally, the motor terminal box should not be in the bottom position. The pump motor should not be isolated (requires contact with atmospheric air to cool the windings), and it is important that the drainage hole in the flange of the pump was clogged. The direction of flow through the pump housing indicated by the arrow. If the pump is mounted in a vertical pipe, the flow must be directed upwards. If a stream goes down, then release the air valve should be mounted at the highest point on the suction line of the pump.
3-phase pump Taco Electrical connection:
Pumps shall be connected in accordance with existing regulations. If you use a regular starter, overload protection must be installed in accordance with rated current (NT), as indicated on the label (Note: NT varies with selectable speed).
Thermal overload protection built into the windings of the majority of electric motors. When the connection is made through contactor TACO 007 (see instrument control of this guide) overload protection automatically set regardless of the selected rate. For detail of the existing schemes of electric connections, please refer to page 15.
Release the air and the direction of rotation of the rotor:
Before starting the pump to remove air through vyvertyvaniya tube, located in the center of the badge on the motor housing. When the tube is removed, should be checked direction of rotation of the motor. Rotation must be counterclockwise, as shown by the arrow on the label. When the dual single-hull pump mounted in a horizontal pipe, the air from the upper pump must be removed through the tube on the pump casing
Preparations for the first launch:
* The system must be thoroughly rinsed from the particles remaining after soldering or welding, steel wool, plaster and other foreign particles that may be in the pipeline
* Ensure the correct alignment of the pipeline and it is secured on both sides of the pump
* We recommend installing valves on each side of the pump
* To prevent the accumulation of suspended particles in the pump, do not install the pump at the lowest point of the system
3-phase pump Taco Electrical connection:
Pumps shall be connected in accordance with existing regulations. If you use a regular starter, overload protection must be installed in accordance with rated current (NT), as indicated on the label (Note: NT varies with selectable speed).
Thermal overload protection built into the windings of the majority of electric motors. When the connection is made through contactor TACO 007 (see instrument control of this guide) overload protection automatically set regardless of the selected rate. For detail of the existing schemes of electric connections, please refer to page 15.
Release the air and the direction of rotation of the rotor:
Before starting the pump to remove air through vyvertyvaniya tube, located in the center of the badge on the motor housing. When the tube is removed, should be checked direction of rotation of the motor. Rotation must be counterclockwise, as shown by the arrow on the label. When the dual single-hull pump mounted in a horizontal pipe, the air from the upper pump must be removed through the tube on the pump casing
Preparations for the first launch:
* The system must be thoroughly rinsed from the particles remaining after soldering or welding, steel wool, plaster and other foreign particles that may be in the pipeline
* Ensure the correct alignment of the pipeline and it is secured on both sides of the pump
* We recommend installing valves on each side of the pump
* To prevent the accumulation of suspended particles in the pump, do not install the pump at the lowest point of the system
Monday, March 22, 2010
Taco 0011-F4-2IFC
Replaceable Cartridge for Taco 0011-F4-2IFC
The service costs are reduced dramatically with the presence of a replaceable cartridge inside the pump. Hence, whenever any maintenance might be required, all that is needed is replacement of the cartridge instead of having to dispose of the entire pump. This reduces maintenance costs substantially.
The service costs are reduced dramatically with the presence of a replaceable cartridge inside the pump. Hence, whenever any maintenance might be required, all that is needed is replacement of the cartridge instead of having to dispose of the entire pump. This reduces maintenance costs substantially.
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