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Defines hazard, warning, and caution symbols to ensure personal and equipment safety.
Stresses correct usage, adherence to technical design, and safety instructions for filter operation.
Covers requirements for authorized personnel, preventing damage, and regular safety checks of the filter.
Explains the filter's construction and how fluid and impurities interact during filtration.
Details how impurities are captured on the filter surface and collect at the housing bottom.
Describes the function of the gap cleaner in scraping accumulated dirt from the filter insert.
Guide to diagnosing common faults like leaks or flow issues and their corresponding causes and remedies.
Emphasizes system shutdown and pressure release before any cleaning or maintenance work.
Outlines a schedule for checking and maintaining specific filter parts like seals and inserts.
Details the procedure for turning the filter body, cleaning, and adjusting packing glands.
Instructions for safely removing the filter insert, checking for damage, and recognizing when replacement is needed.
Indicates that a customer drawing provides the complete list of available spare parts.
Lists essential tools, including metric spanners and cleaning solvents, for filter maintenance.
The MANN plate gap-type filter, available in Series 51 and 55, is a mechanical filtration system designed for high-viscosity mediums. It consists of a housing and a filter insert equipped with a gap cleaner. The primary function of the filter is to remove impurities larger than the specified gap width from the fluid. The fluid flows through the filter body from the outside to the inside, trapping impurities on the filter body surface. These coarse dirt particles either sink to the lower conical part of the housing or accumulate as a filter cake on the exterior of the filter body.
A key usage feature of this filter is its ability to be cleaned during normal operation. By manually turning the filter insert, the filter body rotates past the gap cleaners, scraping off the accumulated filter cake. This scraped dirt then sinks into the lower part of the housing, known as the sludge chamber. For certain models (not series 51 207 6X 021), this sludge can be discharged via a sludge outlet valve. An optional drying valve can also be installed to simplify the disposal of filtered solid particles. The manufacturer emphasizes that cleaning is most effective when the filter packet is turned immediately after the end of operation, allowing the scraped sludge to sink into the sludge compartment during downtime.
The filter is designed for filtering high-viscosity mediums and is not intended for use with liquid foodstuffs, semi-luxury items, or aggressive, inflammable, and/or explosive mediums. Any use outside of these specified conditions is considered improper and voids the manufacturer's liability. The operating authority is solely responsible for any damages arising from such improper use and for providing necessary safety equipment, especially when processing materials dangerous to human health or the environment.
Maintenance is a critical aspect of ensuring the longevity and reliable operation of the MANN plate gap-type filter. The service plan outlines various actions and their recommended intervals, which are subject to adjustment based on dirt concentration, density, and type. For instance, the sludge outlet should be discharged daily by trained personnel. The housing, O-ring seal on the housing, gap filter insert, shaft seal on the filter head, filter body, and gap cleaner should all be checked and serviced every three months by trained personnel. This includes checking for deposits, damage, wear and tear, and leaks, and replacing parts as necessary.
When servicing, cleaning, or repairing the filter, it is imperative that the customer's system is switched off and depressurized to prevent accidental activation. The filter element should not be removed while the system is operational. The manufacturer explicitly states that only trained service personnel should dismantle the filter insert; otherwise, the warranty is rendered null and void. The warranty also becomes invalid due to natural wear and tear, incompetent handling, unauthorized service or repair work, fitting errors during installation or removal, unapproved modifications, or corrosion damage during transport.
Troubleshooting common malfunctions is also covered. For example, a leak on the housing cover typically indicates a damaged cover seal (O-ring), which should be replaced. A leak on the shaft seal may require post-adjustment or replacement of the shaft seal. If the filter is not filtering sufficiently, it could be due to a damaged plate gap-type filter insert, necessitating its removal, inspection, and replacement if damaged. A decrease in flow volume or a steep rise in differential pressure might indicate a filter body filled with dirt or a worn-out gap cleaner. In such cases, turning the filter, shortening turning intervals, or replacing the gap cleaner is recommended. Excessive sludge in the filter can also lead to these issues, requiring sludge discharge and cleaning of the filter insert and housing. If the gap filter insert cannot be turned, it could be due to too much sludge or a worn-out filter body and/or gap cleaner, again requiring sludge removal, cleaning, or replacement of the filter insert.
For repair procedures, if the packing collar (gland) on the filter cover leaks, the packing gland counternut (i) should be loosened, and the packing gland screw (g) gently tightened. It is crucial not to over-tighten, as this can damage the packing gland. After tightening, the packing gland counternut should be re-tightened. For models with an O-ring, shaft seal ring, or sliding ring seal, post-adjustment is not possible. If faults occur, brute force should never be used to turn the handle; damaged or unturnable filter inserts must be replaced.
Removing the filter insert and disassembly involves several steps: carefully opening the breather screw (if present, 1 1/2 turns), marking the installation position of the filter insert relative to the housing, removing hex nuts (pos. l), and carefully pulling out the filter insert. The O-ring seal (pos. h) should be checked for damage and renewed if necessary. It is important to note that plate gap filter inserts cannot be further disassembled and must be replaced if damaged or worn.
The necessary tools for maintenance include an open-ended spanner set (metric sizes 10 to 41, depending on filter size or type), a container with petroleum ether or diesel for cleaning, and cleaning rags. The manual also includes an enclosure with a customer drawing for reference regarding spare parts.
In summary, the MANN plate gap-type filter is a robust filtration solution for high-viscosity fluids, emphasizing ease of maintenance through its self-cleaning mechanism and clear guidelines for servicing and troubleshooting. Adherence to the provided instructions is crucial for safe, proper, and economical operation, ensuring the filter's reliability and extended lifespan.
General| Brand | MANN+HUMMEL |
|---|---|
| Model | 51 Series |
| Category | Water Filtration Systems |
| Language | English |
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