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Table of Contents
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Summary of Contents for IMO ACF5
- Page 1 ACF5 Screw pump Maintenance & Service Instruction...
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Page 2: Introduction
Introduction A screw pump from IMO is a quality product that is designed for a long problem free operation in tough environ- ments. As all other mechanical products they do however requires a certain grade of maintenance and service in order to guarantee a faultless and economic favourable operation. -
Page 3: Table Of Contents
Before starting: ................................... 20 Direction of rotation ................................20 Safety precautions before starting ..........................20 Starting ....................................20 Setting the pressure relief valve ............................21 Adjusting the tuning ................................. 21 Setting of tuning of the ACF: ............................21 Trouble shooting www.imo.se... -
Page 4: List Of Components
521A Washer (537) Plug (537A) Washer Gasket 6000 Valve cartridge (6010) Compl. valve cover (602) (603) O-ring (605) O-ring (608) Valve spindle (609) Washer (610) Ball bearing (612) Regulating nut (614) Valve piston (615) Spring (622) (623) Ball bearing www.imo.se... -
Page 5: Recommended Spare Parts Kits
IEC 200 192996 192996 193004 193004 193004 G050 uled inspection IEC 225 193001 193005 193005 193005 G054 G053 + Complete Repair after major IEC 250 193006 193006 193006 rotor set breakdown or IEC 280 193007 193007 193007 great wear www.imo.se... -
Page 6: Service Intervals
Warranty matters IMO AB´s warranty obligations covers new pumps for 1 year after the commissioning of the pump. Parts that NOT are covered by the warranty are normal wear details such as the mechanical shaft seal, the ball bearing or the flexible coupling. -
Page 7: Dismantling And Reassembling The Pump
180 85 ±4 A = Slide calliper G = Allen key B = Screw driver H = Pairs of pliers D = Crow bar I = Mounting sleeve E = Plastic mallet J = Oil can F = Puller Sectional View www.imo.se... -
Page 8: Dismantling
• Pull out the power rotor 1020 with the help of coupling half or an eye bolt fitted in the power rotor Be careful when the threaded part of the rotor passes the bore in the cover www.imo.se... - Page 9 • Note the axial posistion of the coupling half • Remove the key 113 • Release the stop screw • Remove the coupling half with a puller • Pull the cover 520 upwards • Carefully slide the rotary shaft seal parts 509 a, c, d, e upwards. www.imo.se...
- Page 10 509b is pressed into the end cover 520 again. • Remove the ball bearing 122 from the rotor • Loosen the bolts 451 and remove the frontcover 1020 with a three legged puller. 504 with its o-ring 506 from the pump body 401. www.imo.se...
- Page 11 • Change o-ring 437 on the tuning piston 429 out the complete valve insert. and mount it in 4240 in reverse order. • Reassemble in opposite order. • Loosen the 8 bolts 453 in order to remove the back cover 480. • Reassemble in opposite order. www.imo.se...
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Page 12: Reassembly
NOTE: The measurement of this tool varies be difficult to mount the power rotor. depending on the pump size, a measurement table can be found in the tool description on page 7. The tool can also be purchased from IMO AB. www.imo.se... - Page 13 • Lubricate the seal face on the seat 509a with grease. We recommend grease of ”Graphite” or”Molybdendisulphite”type. NOTE: It is verimportant that the mechanical seal are handled with care and cleanliness is to be considered as crucial. • Complete mechanical shaft seal www.imo.se...
- Page 14 • Mount the complete end cover 520 carefully on the power rotor 1020. • Remount the shaft coupling with a suitable tool. NOTE: Do NOT mount the coupling half with a hammer as this will destroy the shaft seal. www.imo.se...
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Page 15: Installation And Start-Up Instruction
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Page 16: Installation
An angular misalignment of 0.1° corresponds to approximately. 0.2 mm deviation/100 mm. The coupling and alignment shall be selected not to transmit any ax- ial or radial loads on the shaft ends. IMO AB standard Fig. 2 Strainer couplings shall have a distance between the coupling halves as per table, fig 4. -
Page 17: Strainer
When handling liquids which may involve deviation/100 mm. fire hazard, appropriate precautions to avoid danger are to be taken. x = y - t Fig. 3 Alignment of the IMO AB standard coupling Outer diameter Distance between Outer diameter Distance between... -
Page 18: Pipe Connections
In some mounting arrangements the pump may not retain the liquid at stand still. In such installations the Fig. 7 Deaeration suction pipe should be arranged so it forms a liquid trap together with the pump, keeping the pump half filled with liquid. www.imo.se... -
Page 19: Gauges
All systems with screw pumps must be equipped with a pressure relief valve installed immediately adjacent to the pump. In the standard versions of IMO AB low pressure pumps, this pressure relief valve is an integral part of the pump to protect the system against excess pressure. -
Page 20: Start-Up
If the protecting cover steel net on the pumps frame that connects the pump and the electrical motor to each other has been removed do NOT forget to put it back as the rotating coupling can cause seriously personal injuries. www.imo.se... -
Page 21: Setting The Pressure Relief Valve
If operating temperature exceeds 60°C (149°F), appropriate measures to avoid skin contact shall be provided Fig. 10 Tuning the ACF Use hearing protection whenever high noise can be expected from pump, motor and/or environment. www.imo.se... -
Page 22: Trouble Shooting
- The pumped liquid contains a sig- See the chapter on Noise and Vibration. nificant amount of compressible gas, (Page 11). such as free air. (This would usually cause noise). - A too small pump has been chosen. Contact your IMO AB representative. www.imo.se... - Page 23 For pumps with Tuning: noticed tion. Adjust the Tuning. If this does not help or for pumps without Tuning: Contact your IMO representative or IMO serv- ice dept. - Faulty electrical supply. Check all three phases of the supply. www.imo.se...
- Page 24 IMO AB: IMO AB: P.O. Box 42090, SE 126 14 Stockholm, Sweden P.O. Box 42090, SE 126 14 Stockholm, Sweden Telephone: +46 8 50 622 800, Telefax: +46 8 645 1509 Telephone: +46 8 50 622 800, Telefax: +46 8 645 1509...
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