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Low Pressure Filter Pi 2300
Nominal pressure 25/140 bar (360/1990 psi), nominal size 1200
1. Features
High performance filters for modern hydraulic system
  • Provided for pipe installation
  • Modular system
  • Compact design
  • Minimal pressure drop through optimal flow design
  • Visual/electrical/electronic maintenance indicator
  • Quality filters, easy to service
  • Equipped with highly efficient Sm-x filter elements
  • Beta rated elements according to ISO 16889
  • Elements with high differential pressure stability and dirt holding capacity
  • Worldwide distribution
  • 2. Flow rate/pressure drop curve complete filter

    y = differential pressure Δp [bar]
    x = flow rate V [l/min]

    3. Separation grade characteristics 4. Filter performance data

    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. Δp 10 bar

    Sm-x    3     5(c)    ≥200
    Sm-x    6     7(c)    ≥200
    Sm-x    10   10(c)   ≥200
    Sm-x    16   15(c)   ≥200
    Sm-x    25   20(c)   ≥200
    Values guaranteed up to
    10 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
    Nominal pressure (10 LW): 25 bar (360 psi)
    Test pressure (statical): 40 bar (570 psi)
    Temperature range: -10 C to +120 C
    (other temperature ranges on request)
    Bypass setting: Δp 3.5 bar 10 %
    Filter head and cap material: GAL
    Filter housing material: AL
    Sealing material: NBR
    Maintenance indicator setting: Δp 2.2 bar 0.3 bar
    Filter head material: GAL
    Filter housing material: AL
    Sealing material: NBR
    Maintenance indicator setting Δp 2.2 bar 0.3 bar
    Electrical data of maintenance indicator:
    Max. voltage: 250 V AC/200 V DC
    Max. current: 1 A
    Contact load: 70 W
    Type of protection: IP 65 in inserted and
    secured status
    Contact: normally open/closed
    Cable sleave: M20x1.5

    The switching function can be changed by turning the electric upper part by 180 (normally closed contact or normally open contact). The state on delivery is a normally closed contact. By inductivity in the direct current circuit the use of suitable protection circuit should be considered. Further maintenance indicator details and designs are available in the maintenance indicator data sheet.

    We draw attention to the fact that all values indicated are average values and 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 you 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.

    In = Inlet
    Out= Outlet

    9. Dimensions
    10. Installation, operating and maintenance instructions
    10.1 Filter installation
    When installing filter make sure that sufficient space is available to remove filter element and filter housing. Preferably the filter should be installed with the filter housing pointing upwards. The maintenance indicator must be visible.
    10.2 Connecting the electrical maintenance indicator
    The electrical indicator is connected via a 2-pole appliance plug according to DIN EN 175301-803 with poles marked 1 and 2. The electrical section can be inverted to change from normally open to normally closed position or vice versa.
    10.3 When should the filter element be replaced?
    1. Filters equipped with visual and electrical maintenance indicator: During cold starts, the indicator may give a warning signal. Press the red button of the visual indicator once again only after operating temperature has been reached. If the red button immediately pops up again and/or the electrical signal has not switched off after reaching operating temperature. The filter element must be replaced after the end of the shift.
    2. Filters without maintenance indicator: The filter element should be replaced after trial run or flushing of the system. Afterwards follow instructions of the manufacturer.
    3. Please always ensure that you have original MAHLE spare elements in stock: Disposable elements (Sm-x) cannot be cleaned.
    10.4. Element replacement
    1. Stop system and relieve filter from pressure.
    2. Loosen toggle, remove cover, and open drain valve. Housing completely vented.
    3. Remove filter element rom the filter bowl. With filter type Pi 230200 remove the spacer sleeve from the elements clean and reuse.
    4. Check seals for damages. Replace, if necessary.
    5. Make sure that the part number on the spare element corresponds with the part number on the filter name-plate. With the filter type Pi 230200 always change both elements. Remove the plastic bag and push element over spigot in the filter head. With filter type Pi 230200 put the sleeve on the element. On this, telescope the second element and locate it.
    6. Close drain valve. Put the thumb screw together with the cover on the centre rod and tighten strong. Filter must be bleeded!
    11. Spare parts list