PROFILTER bar screen cleaning grabs

Equipment and control system

A complete bar cleaning equipment includes:

  • electric hoisting block,
  • rail carriage,
  • cable drum for grab drive power supply,
  • grab drive motor gear,
  • grab,
  • operation deck,
  • track with end stops (bumpers),
  • support pillars made of hollow sections,
  • control cabinet,
  • cabling system between the control cabinet and the remaining electric equipment (e.g. drive units, sensors).

Exemplary specification:

grab lifting capacity – 2 t
lifting height – 11 m
lifting speed – 6/1.5 m/min
rail travel speed – 5/20 m/min
overall supply power – 5.5 kW
crane service class – 1 Am acc. to FEM
power supply – 3 x 400 V, 50Hz, IP55
materials used – hot galvanized carbon steel

Download the brochure [.pdf]

General schematic diagram

Exemplary operation algorithm

An exemplary cycle of bar screen cleaning includes the following steps:

  • the hoisting crane with the grab moves to the designated screen area and stops over its first portion of the screen to be cleaned,
  • the open grab is lowered and its prongs slide between the screen bars, collecting the debris from the water,
  • when in its bottom position, the grab automatically closes and then travels upwards with the collected debris,
  • once the grab has reached its upper position, the hoisting crane travels to the dump area and the grab opens, releasing its content into the waste container or collector,
  • after unloading the debris, the hoisting crane travels back to the screen and is stopped over its next portion to be cleaned,
  • the operation cycle is repeated until the whole screen is clean.

Exemplary PROFILTER’s offer

A typical PROFILTER’s offer includes:

  • design work including intake grates, cleaning grab and support structures,
  • delivery of complete equipment with necessary technical and operational documentation, declarations of conformity, Polish Technical Inspection Office certificates,
  • delivery of control cabinets, cables and other electrical components,
  • assembly of the control cabinet and wiring,
  • assembly or supervision of the assembly of mechanical and electrical equipment,
  • trial run, tests and measurements,
  • documentation, acceptance tests, formalities related to the equipment approval for service,
  • equipment start up,
  • instruction for the operating staff.


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