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Suction Filter Pi 160
1. Features
High performance filters for modern hydraulic systems
  • Provided for tank mounting
  • Compact design
  • Minimal pressure drop through optimal flow design
  • Visual/electrical/electronic maintenance indicator
  • Threaded or flanged connections
  • Vacuum gauge serial production
  • Quality filters, easy to service
  • Quick-lock design and shut off valve
  • Equipped with highly efficient Mic, Sm-x or Drg filter elements
  • Beta rated elements according to ISO 16889 multipass test
  • Elements with high differential pressure stability and dirt holdingcapacity
  • Worldwide distribution
2. Flow rate/pressure drop curve complete filter
3. Symbols
4. Order Numbers
5. Technical specifications
Design: suction filter for tank mounting with shut off valve
Installation: horizontally under oil level or vertically above oil level with optional extension pipe
Temperature range: -10 C to +120 C
(other temperature ranges on request)
Filter head material: GDAL
Filter housing material: St
Sealing material: NBR/AL
Indicating range
vacuum gauge: -1 bar to 1.5 bar
Pressure setting vacuum switch: -200 mbar
Electrical data of vacuum switch (PiS 3070): Maximum voltage:
230 V~/=Maximum current on contact: 6 A
Contact: change-over switch
Electrical connections: AMP 6.3 DIN 46248
for bushings according to
DIN 46247
Fitting position: any fitting positions possible
(fitting position has to be defined
when ordering indicators with
defined switch point)
Type of protection: IP 00 - without protecting cap
IP 54 - with protecting cap
Vacuum switch 42 V (HES 2200 BP)Contact:
normally openBreaking capacity: 42 V/6 W as ohmic resistor
Type of protection: IP 54 with protecting cap
Electrical connections: AMP 6.3 DIN 46248 for
receptacle for tabs according to
connection method, 2 pole
Connecting plan
1 supply line
2 operating contact
3 normally closed contact
4 adjusting screw

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.


6. Dimensions
7. Installation, operating and maintenance instructions
7.1 Filter installation
When installing the filter make sure that sufficient space is available to remove the filter element and the filter housing. Preferably the filter should be installed with the housing pointing downwards. The maintenance indicator must be visible.

7.2 When should the filter element be replaced or cleaned?
Filters equipped with visual and electrical maintenance indicator: During cold starts, the indicator may give a warning signal. If vacuummeter shows > 0,2 bar or the electrical signal has not switched off after reaching operating temperature, the filter element must be replaced or cleaned after the end of the shift. Please always ensure that you have original MAHLE spare elements in stock: Disposable elements (Mic or Sm-x) cannot be cleaned.

7.3 Element replacement
1. Stop system and relieve filter from pressure.
2. Unscrew nuts, turn cover counter-clockwise and pull. Unscrew element from support.
3. Check O-ring on the filter for damage. Replace, if neccessary.
4. Make sure that the order number on the spare element corresponds to the order number of the filter name-plate.
5. Complete installation.

7.4 Cleaning methods for cleanable elements
a) Ultrasonic cleaning
Insert the contaminated suction filter element into an ultrasonic bath for approx. 3 minutes; then rinse in clean liquid. Afterwards, blow air into the filter from the clean side inward.

b) Manual cleaning
1. Remove coarse external contamination in a separate cleaning tank using a brush and cleaning agent. 2. Place filter in unused cleaning liquid (approx. 20 min) 3. Wash filter with cleaning liquid from the outside to the inside. 4. Dry element with pressured-air from the clean side to the dirt side; the cleaning efficiency is about 6070%

Using either method, be sure that no dirt is entering to the clean side of filter.

8. Spare parts list