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Tank Top Return-Line Filter Pi 530
Nominal size 35 and 60
1. Features
High performance filters for modern hydraulic system
  • Provided for tank top installation
  • Modular system
  • Compact design
  • Minimal pressure drop through optimal flow design
  • Visual/electrical/electronic maintenance control
  • Threaded alt. hose connections
  • Quality filters, easy to service
  • Equipped with highly efficient glass fibre Sm-x filter
  • Beta rated elements according to ISO 16889 multipass test
  • Elements with high differential pressure stability and dirt holding capacity
  • Worldwide distribution
  • 2. Flow rate/pressure drop curve complete filter
    y = differential pressure p [bar]
    x = flow rate V [l/min]
    3. Separation grade characteristics 4. Filter performance data

    y=beta-value
    x=particle size [µm]

    determined by multipass tests (ISO 16889)
    calibration according to ISO 11171 (NIST)

    tested according to ISO 16889 (multipass test)

    Sm-x-Elements with
    max.Δ p 10 bar

    Sm-x   3     5(c)  ≥200
    Sm-x   10   10(c)  ≥200
    Sm-x   25   20(c)  ≥200

    values guaranteed up to
    5 bar differential pressure

    5. Quality assurance
    MAHLE filters and filter elements are produced according to the following international standards:
    6. Symbols
    7. Order Numbers
    8. Technical specifications
    Design: line mounting filter
    Nominal pressure: 6 bar (90 psi)*
    Test pressure: 9 bar (130 psi)
    Temperature range: -10C to + 80C
    (other temperature ranges on request)
    Bypass setting: Δ p 1.5 bar
    Filter head material: plastic-PA 6/Al
    Filter housing material: plastic PA 6
    Filter cover material: plastic PA 6
    Indication range of pressure gauge: 0 to 4 bar
    Activating pressure of pressure switch: 1.2 bar
    Electrical data of pressure switch:
    Max. voltage: 42 V
    Max. current: 2 A
    Contact load: 100 VA
    Type of protection: IP 65 - with protection cap
    Contact: normally open/closed
    Electrical connection: AMP 6,3 DIN 46248
    connector according to
    DIN 46247,
    connection method 2-pole

    We draw attention to the fact that all values indicated are average values which do not always occur in specific cases of application. Our products are continually being further developed. Values, dimensions and weights can change as a result of this. Our specialized department will be pleased to offer you advice.

    We recommend to contact us concerning applications of our filters in areas governed by the EU Directive 94/9 EC (ATEX 95). The standard version can be used for liquids based on mineral oil (corresponding to the fluids in Group 2 of Directive 97/23 EC Article 9). If you consider to use other fluids please contact us for additional support.

    Subject to technical alteration without prior notice.

    9. Dimensions
    Version with filter head PA 6

    *E= Minimum clearance for filter element removal
    * Ø 60= Mounting hole Ø 60
    *G¼ = Option

    10. Installation, operating and maintenance instructions
    10.1 Filter installation
    When installing the filter make sure that:
    a) Sufficient space is available to remove filter element and filter housing
    b) The mounting hole in the tank top is not excessively large, to ensure proper sealing,
    c) The filter is free of tension after installation, max. torque 7 Nm. Preferably the filter should be installed with the filter housing pointing downwards.
    10.2 Connecting the electrical pressure switch
    The electrical pressure switch is connected via connectors according to DIN 46247.
    10.3 When should the filter element be replaced??
    1 . Filters equipped with pressure gauge:
    When the dynamic pressure reaches 1.2 bar (red/green indication), the filter element must be replaced.
    2 . Filters equipped with pressure switch:
    During cold starts, the pressure switch may give a signal.If the electrical signal has not switched off after reaching operating temperature, the filter element must be replaced after the end of the shift.
    3 . Filters without indicator:
    The filter element should be replaced after trial run or flushing of the system.
    Afterwards follow instructions of manufacturer.
    4 . Please, always ensure that you have original MAHLE spareelements in stock: Disposable elements (MIc, Sm-x) cannot becleaned.
    10.4 Element replacement
    1 . Stop system and relieve filter from pressure.
    2 . Unscrew cover, turning counter-clockwise.
    3 . Remove filter housing and filter element by pulling upwards.
    4 . Remove filter element with a side-to-side motion.
    5 . Clean the filter housing with a suitable medium.
    6 . Check O-rings on filter cover and filter housing for damage. Replace, if necessary.
    7 . Make sure that the order number on the spare element corresponds to the order number of the filter name-plate.
    8 . Remove filter element from plastic bag and reassemble in reverse order (items 1 to 4).
    9 . Contaminated Mic elements can be reduced to ashes. Sm-x filter elements must be disposed in another way.
    10.5 Replacement of air breather filter element(plastic filter head only)
    • Push slightly on the lid and air breather element downwards(lid A).
    • Remove lid and element from the lower hook.
    • Pull out element from the lid.
    • Install new element in the lid.
    • Installation in reverse order.
    • Check correct position of the lid.

    Note: Filter element and air breather element should be always replaced at the same time.

    Subject to technical alteration without prior notice.

    11. Spare parts list