HENGST FILTERS
1001954B
R928001250

Installation

The max. operating pressure of the system must not exceed the max. admissible operating pressure of the filter (see name plate). During assembly of the filter (see also chapter “Tightening torque”), the flow direction (direction arrows) and the required servicing height of the filter elements (see chapter “Dimensions”) are to be considered. The maintenance indicator must be arranged in a well visible way. With filters with cover lift-off device, the cover must not be swiveled before the assembly for reasons of static stability. Remove the plastic plugs in the filter inlet and outlet. The filter is to be installed vertically, in standing position. Screw the filter feet to the bottom or the frame. Ensure that the system is assembled without tension stress. The optional electric maintenance indicator is connected via the electronic switching element with 1 or 2 switching points, which is attached to the mechanical/visual maintenance indicator and held by means of the locking ring.

 

Commissioning

Commission the system and bleed the filter until fluid leaks at the bleeding point.

 

Maintenance

If at operating temperature, the red indicator pin reaches out of the mechanical/visual maintenance indicator and/or if the switching process in the electronic switching element is triggered, the filter element is contaminated and needs to be replaced and cleaned respectively. The material number of the corresponding replacement filter elements is indicated on the name plate of the complete filter. It must comply with the material number on the filter elements. Decommission the system. Open the bleed screw and/or the bleed valve and reduce the pressure. After loosening and removing the cover screws, the filter cover is removed manually and put down onto a clean ground. Alternatively, the cover can be lifted off the filter by rotating the hand wheel, the optional cover lift-off device, counterclockwise and swiveled to the side. Via the lateral drain screw, the fluid can be drained via the dirt side. Apart from that, additional volume may be drained via the lower drain screw (clean side), if necessary. Remove the filter elements from the spigot by rotating them slightly. Clean the filter components, if necessary. Check the cover seal, mounting screws and nuts for damage and renew them, if necessary. For suitable seal kits refer to chapter “Spare parts”. Filter elements made of wire mesh can be cleaned. Install the new or cleaned filter elements on the relevant spigot again by rotating them slightly. The filter is to be assembled in reverse order. The torque specifications (“Tightening torques” chapter) are to be observed. Commission the system and bleed the filter until fluid leaks at the bleeding point.

 

Warning:

Assembly and disassembly only with depressurized system! Filter is under pressure! Only open the cover screws in depressurized condition! Do not exchange the maintenance indicator while the filter is under pressure! If the flow direction is not considered during the assembly, the filter element will be destroyed. Particles will get into the system and damage downstream components.

 

Notes:

All works at the filter only be trained specialists. Functioning and safety are only guaranteed if original Bosch Rexroth filter elements and spare parts are used. Warranty becomes void if the delivered item is changed by the ordering party or third parties or improperly mounted, installed, maintained, repaired, used or exposed to environmental condition that do not comply with the installation conditions.