Table of Contents
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Table of Contents
Related Manuals for Lutz HME Series
Summary of Contents for Lutz HME Series
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Page 3: Table Of Contents
Table of contents 1. Safety ................................4 1.1 Personnel responsible for installation and start-up ....................5 1.2 Personnel responsible for operation and maintenance ..................5 1.3 Personnel responsible for repairs ......................... 5 1.4 Improper use ..............................6 1.5 Disposal ................................6 2. -
Page 4: Safety
1. Safety These operating instructions: • must be considered as part of the product. • must be read by the operator of the pump before placing it into operation and must be followed during operation. • must be given to any subsequent owners or users of the product. •... -
Page 5: Personnel Responsible For Installation And Start-Up
1.1 Personnel responsible for installation and start-up Interventions allowed only to specialised personnel who may eventually delegate to others some operations depending on specific evaluations (technical capability required: specialisation in industrial plumbing or electric systems as needed). 1.2 Personnel responsible for operation and maintenance Permissible actions for general operators (after receiving instruction in correct use of the system): •... -
Page 6: Improper Use
1.4 Improper use The pump is to be used solely to deliver liquids. The pump cannot be used to generate isostatic or counter pressures. The pump must not be used to mix liquids that undergo exothermic reactions. The pump must be installed vertically in a stationary position. The pump must be connected at the pressure port to a suitable hydraulic system with appropriate piping. -
Page 7: General
2. General 2.1 Field of application Series B80 pumps are designed and built to transfer liquid chemical products with a specific gravity, viscosity, temperature and stability of state appropriate for use with centrifugal pumps in a fixed installation, from a tank at a lower level to a tank or a pipe at a higher level. -
Page 8: Construction
2.2 Construction The mechanical structure is extremely simple: the impeller is pulled in rotation by the pump shaft connected to the motor shaft by a rigid coupling; the counter rotation of the impeller and a labyrinth reduce fluid leakage towards the shaft; dynamic loads, usually reduced in this type of pump, are supported by the motor bearings. -
Page 9: Immersion Depth
2.3.3 Immersion depth To prevent sludge collecting at the bottom of the tank, the immersion depth can be increased by adding a suction extension (in any case, ensure that the minimum distance from the bottom "S" is maintained). Should the extension pipe be greater than 250 mm in length, arrange for a bracket to keep lateral movement of the extension within 1 –... -
Page 10: Motor
2.4 Motor 2.4.1 Electrical connections The pump’s direction of rotation, which can be verified by observing the cooling fan (in B80 pumps, the cooling fan must rotate clockwise when viewed from above) is determined by the electrical connection to the terminals. With single phase motors the direction of rotation may be With three-phase motors the direction of rotation may be reversed by changing the position of the connection plates:... -
Page 11: Installation And Operating Instructions
3. Installation and operating instructions 3.1 Transport • Cover the hydraulic connections. • When lifting the unit, do not exert force on the plastic hydraulic fittings. • Place the pump on its base or fixing plate during transport. • If the road is particularly rough, protect the pump by means of appropriate shock-absorbing supports. •... - Page 12 Follow the instructions indicated in the following diagram: 1) Install a shut-off valve on the discharge side. 2) Install a check valve (particularly with vertical or horizontal pipe runs; mandatory when pumps are connected in parallel). 3) Provide a connection point for a pressure gauge or safety pressure control device. 4) Secure all piping firmly.
- Page 13 • Manually verify that all rotating parts are free to turn without abnormal friction by turning the fan wheel on the motor. • Make sure that the power supply matches the data shown on the pump motor identification plate. • Connect the motor to the power supply via a magnetic/thermal protective switch. •...
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Page 14: Start-Up
3.4 Start-up • Verify that the instructions outlined in the installation section have been followed. • Verify the correct direction of rotation (clockwise as seen from the motor end) by supplying the motor with short impulses. • Ensure that the NPSH available is greater than that required by the pump (in particular with hot liquids, liquids with a high vapour pressure, if a long suction extension is used or in the case of negative suction head). -
Page 15: Operation
3.5 Operation • Switch automatic control on. • Do not operate any valves whilst the pump is in operation. • Risk of dangerous water hammer effects in the case of sudden or improper valve actuation (only trained personnel should operate valves). •... -
Page 16: Disassembly
3.6 Disassembly • All of the following maintenance operations must be performed under the supervision of qualified personnel. • Switch off power to the motor and disconnect the electrical leads. Remove the wires from the terminal box and cover the ends. •... -
Page 17: Maintenance
3.7 Maintenance • All of the following maintenance operations must be performed under the supervision of qualified personnel. • Clean the filter elements regularly (every 2 - 30 days, depending on the liquid being pumped). • Inspect the rotating parts of the pump regularly (every 1 - 6 months, depending on the liquid pumped and the operating con- ditions). -
Page 18: Malfunctions And Possible Causes
4. Malfunctions and possible causes The pump does not deliver: 01- Wrong direction of rotation 02- Suction piping is too long or has too many bends 03- Pump not completely flooded 04- Impeller blades obstructed by impurities 05- The check valve in the discharge pipe is blocked 06- The geodetic head of the system is greater than the maximum delivery head developed by the pump 07- The impeller is blocked by a considerable layer of crystals or as the result of melting due to dry running The pump has reduced capacity or insufficient pressure:...
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