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APV DW1 Instruction Manual

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Instruction Manual
DW Pumps
Read and understand this manual prior to
operating or servicing this product.

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Summary of Contents for APV DW1

  • Page 1 Instruction Manual DW Pumps Read and understand this manual prior to operating or servicing this product.

  • Page 3: Table Of Contents

    453194 ISS 09.2006 Contents: Section Page Description Section Page Description Sectional Drawing - Pump Spare parts list Sectional Drawing - Shaft seal Pump complete Shaft seal, single mechanical Warnings Baseplate Motorshroud complete Introduction to the DW range Motorshroud spare part The DW range Coupling guard The DW Pump, options and extras...

  • Page 4: Sectional Drawing - Pump

    453195 ISS U 09.2006 Sectional Drawing, pump complete...
  • Page 5 453195 ISS U 09.2006 Sectional Drawing, pump complete Description Description Front cover O-ring, rotor screw Bolt, front cover Rotor Bolt, front cover stepped O-ring, rotor/shaft Nut, front cover dome Shims, rotor Gasket, front cover Shaft main Screw, rotor case to chassis Shaft aux Dowel Gear key...

  • Page 6: Sectional Drawing - Shaft Seal

    342229 ISS Z 04.2000 Sectional drawing - Shaft seal Single mechanical seal Rotary drive ring Rotary seal face O-ring, seal Stationary seal face Seal housing Clamp plate Stationary drive ring Wave spring Screw, seal housing Clamp...

  • Page 7: Warnings

    Always use securely fitted lifting straps when lifting the pump with a hoist or similar lifting gear. Check whether there are any special lifting instructions. Always ensure that the gearbox case is filled with an APV recommended gear oil to the appropriate level.

  • Page 8: Introduction To The Dw Range

    Double mechanical shaft seal in SiC/Carbon or SiC/SiC . Single EPDM lip seal for DW1-5. Triple PTFE lip seal (confectionary) for DW1-5. Packed gland with sealing thread in PTFE impregnation, for DW1-5. Horizontal or vertical suction and discharge ports. Rectangular inlet.

  • Page 9: Installation Of The Pump

    DW1 - DW5 pump on baseplate type 1: To be lifted by putting straps below the baseplate as shown in fig. B. Fig. C: DW1 - DW6 pump on baseplate type 2: To be lifted by putting straps below the baseplate as shown in fig. C.

  • Page 10: Water Supply For Water Flushed Seals

    453196 ISS E 04.2008 Installation of the pump Water supply for water flushed seals If seal flushing is required, connect the flushing liquid to the pump. Pumps fitted with a liquid-flushed mechanical shaft seal have 2 hose connectors for flushing liquids in the seal housing. The hose connectors are M5 and fit a Ø6.0 mm hose.

  • Page 11: Immediately After Starting The Pump

    453196 ISS E 04.2008 3. Before start-up and starting the pump that the lubricant used is of an APV recommended type that the pump shaft (38) and the motor shaft are properly aligned. that the pump port connections are tight.

  • Page 12: Fault Finding

    Worn rotors: Renew Shaft bearing wear: Replace bearing or return pump to APV for overhaul,if necessary. Worn mechanical seal: Renew. O-ring incompatible with product: Check chemical compatibility chart, or contact APV for alternative elastomers.

  • Page 13: Dismantling And Re-Assembling The Pump

    453196 ISS E 04.2008 4. Dismantling and re-assembling the pump There are a few basic operations to carry out during maintenance of the pump. These are described in the following sections. The sectional drawing shows the position of the various components mentioned in this procedure.

  • Page 14: Remove The Rotor Case

    (page 5). For re-fitting the rotors use the sectional drawing for reference (page 2). Check on DW1-5 that the rotor marked with ‘L’ is mounted on the main (long) shaft (38) and the rotor marked with ‘S’ is mounted on the aux. (short) shaft (39). See fig. 5.

  • Page 15: Remove Can

    453196 ISS E 04.2008 4. Dismantling and re-assembling the pump Remove can (26) To remove and re-fit the can (26) it is necessary to dismantle the pump as described below. Use the sectional drawing for reference (page 2). Fig. 19 Disconnect the power supply.

  • Page 16: Re-Fit The Timing Gears

    453196 ISS E 04.2008 4. Dismantling and re-assembling the pump Undo the bottom or left gear nut (56). Fig. 10 Remove rotor lock and rotors (35) as described in section 4.2. Straighten the locking tab on the washer (55) at the gears (54) and remove the washers (55).

  • Page 17: Adjustment Of The Rotors Axial Position

    453196 ISS E 04.2008 4. Dismantling and re-assembling the pump If the position of the feet and hence in- and outlet is changed, it Fig. 19 is necessary to change the position of the oil filler plug, the oil Oliepåfyldningsstuds / level window etc.

  • Page 18: Adjustment Of The Rotors Angular Position

    453196 ISS E 04.2008 4. Dismantling and re-assembling the pump 4.9.1 Adjustment of the rotors angular position To run the pump effectively and safely, it may be necessary to carry out the adjustment of the rotors angular position after dismantling and re-assembling it, to ensure the correct angular position of the two rotors.

  • Page 19: Maintenance

    The rotors of the pump can be replaced with new rotors of the same type and dimension. It is also possiboe to change from piston rotor to bi-lobe rotor and vise versa on the following pump types: ⇔ DW1/003/7.5 DW1/004/15 ⇔ DW2/006/10 DW2/007/20 ⇔...

  • Page 20: Replacement Of Single Mechanical Shaft Seals

    453196 ISS E 04.2008 5. Maintenance Replacement of single mechanical shaft seals To change shaft seal it is necessary to disassemble the pump as de-scribed in the following. Use the sectional drawing for reference (page 2 and 5). Remove the front cover (1) as described in Section 4.1. Remove the rotors (35) as described in Section 4.2.

  • Page 21: Changing The Bearings

    453196 ISS E 04.2008 5. Maintenance Move the feet (29, 30) to the required position as described in Fig. 2 sections 4.8 and 4.8.1. Fill the gearbox with oil to the specified level according to fig. 2. Check for leaks. See section 3.2 for required amount of oil and positioning of oil level window.

  • Page 22: Recommended Holding Of Spare Parts

    453196 ISS E 04.2008 5. Maintenance Fig. 3 21. Position the rotor locking piece in fig. 3 and 11, respectively, and tighten the bearing lock nuts (50) until no backlash can be felt in the bearing assembly. 22. Remove the rotors (35) from the shafts as described in section 4.2. 23.

  • Page 23: Technical Data

    453196 ISS E 04.2008 6. Technical data Tightening Torque Settings Tightening torque required for bolts, nuts, and screws in the DW pumps: Metric tool must be used - size shown in [mm] Front Front Rotor Rotor Seal Oilseal Chassis/ Running torque, Clamp Lipseal cover...

  • Page 24: Maximum Differential And Discharge Pressures

    Rotors with maximum temperature of 180°C are marked with .. on the ... = Multi-Duty (110°C) spline. See fig. 17 for DW1-5 and fig. 18 for DW6&7 and the ..= Super tight* (110°C) description under the illustrations on the left.
  • Page 25 The values shown in the table apply to water at 20°C. The noise level may increase considerably, if reducers (reduction/ expanding fittings) are mounted on the inlet/outlet. LpA in dB LwA in dB Pump DW1/003/7.5 DW1/004/15 DW1/007/7 DW1/007/15_600 DW2/006/10 DW2/007/20...

  • Page 26: Temperature Changes And Max. Temperature

    The maximum rotational speed specified below must not be exceeded. DW1: max. 1400 rpm DW2: max. 1400 rpm DW3: max. 1400 rpm DW4: max. 1200 rpm DW5: max. 1000 rpm DW6: max. 800 rpm DW7: max. 600 rpm DW1 - 4/xxx_600: max. 600 rpm...
  • Page 27 453196 ISS E 04.2008 453364.doc 6. Technical data Clearance for adjustment of pumps DW1/003/7.5 - Piston High efficiency 110°C Front Bag/Rear 0.15 0.05 0.07 Min. 0.21 0.11 0.15 Supertight Multi-Duty 110°C Front Front Bag/Rear Bag/Rear Min. 0.20 0.09 0.07 Min.
  • Page 28 453196 ISS E 04.2008 453365.doc 6. Technical data DW2/006/10 - Piston High efficiency 110°C Bag/Rear Front 0.16 0.05 0.07 0.22 0.11 0.15 Multi-Duty 110°C Supertight Front Front Bag/Rear Bag/Rear 0.23 0.08 0.07 0.12 0.04 0.05 Min. Min. 0.29 0.14 0.15 0.18 0.10 0.11...
  • Page 29 453196 ISS E 04.2008 453366.doc 6. Technical data DW3/014/10 - Piston High efficiency 110°C High temperature 180°C Front Front Bag/Rear Bag/Rear 0.17 0.06 0.09 0.26 0.14 0.14 Min. Min. 0.23 0.12 0.17 0.32 0.20 0.22 Multi-Duty 110°C Supertight Front Front Bag/Rear Bag/Rear 0.23...
  • Page 30 453196 ISS E 04.2008 453367.doc 6. Technical data DW4/033/10 - Piston High efficiency 110°C High temperature 180°C Front Front Bag/Rear Bag/Rear 0.20 0.07 0.09 0.29 0.14 0.17 Min. Min. 0.26 0.15 0.25 0.35 0.22 0.33 Multi-Duty 110°C Supertight Front Front Bag/Rear Bag/Rear 0.25...
  • Page 31 453196 ISS E 04.2008 453368.doc 6. Technical data DW5/080/12.5 - Piston High efficiency 110°C Bag/Rear Front 0.31 0.12 0.14 0.37 0.20 0.30 Multi-Duty 110°C Supertight Front Front Bag/Rear Bag/Rear 0.36 0.14 0.14 0.23 0.07 0.10 Min. Min. 0.42 0.22 0.30 0.29 0.13 0.16...
  • Page 32 0.46 0.61 0.28 0.21 0.46 0.61 DW6/519/7 - Lobe High temperature 180°C* Front Bag/Rear Interlobe Min. Multi-Duty 110°C Supertight* Front Bag/Rear Interlobe Front Bag/Rear Interlobe Min. 0.41 0.40 0.23 0.30 0.46 0.29 0.46 0.61 Contact APV for clearances not specified...
  • Page 33 0.29 0.46 0.66 DW7/1016/7 - Lobe High temperature 180°C* Front Bag/Rear Interlobe Min. Multi-Duty 110°C Supertight* Front Bag/Rear Interlobe Front Bag/Rear Interlobe Min. 0.46 0.48 0.23 0.30 0.54 0.29 0.46 0.66 Contact APV for clearances not specified Subject to changes...
  • Page 34 Phone: +45 70 278 444 Fax: +45 70 278 445 For more information about our worldwide locations, approvals, certifications, and local representatives, please visit www.apv.com. SPX reserves the right to incorporate our latest design and material changes without notice or obligation. Design features, materials of construction and dimensional data, as described in this bulletin, are provided for your information only and should not be relied upon unless confirmed in writing.

This manual is also suitable for:

Dw7Dw5Dw2Dw3Dw4Dw6

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