Separ KWA range

The Separ KWA range of fuel filter/water separators are high performance technically advanced systems for all types of diesel engines. They operate by a three stage system, filtering out all harmful solid particles and liquid impurities which are heavier than diesel fuel that would otherwise cause engine problems. Advantages of the Separ KWA filter system  Extends life of filter element (4 times longer service life) Less wear of pump and injection system Improved combustion (giving lower harmful emissions) Lower fuel consumption Lower maintenance costs and shorter down-times   Twenty five reasons to use a Separ KWA fuel filter/water separator 1. High fuel flow, low pressure differential 2. Highly effective water removal 3. Ease of filter change/servicing 4. T-bar handle for simple, one hand servicing
5. Low cost 6. 10, 30 or 60 mic elements 7. Water in fuel sensors available 8. 100% separation of free water (according to DIN 51777) 9. Vacuum gauges  10. Vacuum sensors (electronic switching) 11. Metal bowl versions available 12. RINA compatible units 13. ISO10088 approved units available 14. Lloyd’s type approval 15. Gemanisher lloyds register type approval 16. Will not choke internal valve, unlike the competition 17. Separ - A tried and trusted name in the industry 18. Readily available spare parts 19. Centrifugal water removal 20. Ball valve separation 21. Particulate removal 22. Locking drain tap to avoid accidental drainage 23. Large filtering element 24. Fuel flow rates up to 600 litres per hour 25. Diesel (MDO, gas oil etc) filtration as standard, petrol filtration as an option
Working principle of the Separ KWA range of fuel filter/water separators • First stage Separation of foreign solids (down to 30 micron) and of liquid impurities by the centrifugal action of the Separator • Second stage Collection of very small particles (down to 15 micron). Floating particles rise within the fuel to the top of the conical insert (or cone) and collect on its sloping surfaces. The larger and heavier fractions which build up in the course of time gradually sink to join the impurities separated in the first stage at the bottom of bowl. • Third stage Fine filtering of the fuel in the Separ replaceable element. Removal of remaining particles, down to 10 micron (96%) The combined action of the three stages achieved a 100% separation of free water (according to DIN 51777)

Type M and D bowls have the required ISO10088 fireproofing standard for use on inland waterways and to pass RCD inspections. Unless otherwise specified, all filters will be supplied with 30 micron elements pre-installed.

The 10 and 30 micron elements are manufactured from hydrophobic cellulose paper, the 60 micron elements are manufactured from washable stainless steel.

KWA range dimensions

KWA range flow vs Pressure Drop Chart

Installation

1) Remove all fuel filters between the fuel tank and the fuel delivery (lift) pump. Filters between the pump and injection system can also be removed if the filtering degree meets the engine specification (e.g. 10 micron) unless it is a distributor type injection pump or injector system and/or pressure relief valves are located on the original filter unit.

2) In principle the Separ KWA is installed on the intake side between the fuel tank and pump (see schematic below).

3) If at all possible, the KWA should be installed no higher than the fuel pump (except in gravity-fed systems).

4) When connecting up, use screwed couplings with O-ring seals

5) After fitting the KWA separator, unscrew the top screw, remove cover and top up with clean fuel, filling it to the brim.

6) After replacing the cover and starting the engine, check all fuel system joints for leaks.
 
Maintenance
The Separ KWA separator requires little maintenance. It is recommended that accumulated water and dirt in the bowl should be checked daily and if necessary drained off (after stopping the engine). An automatic water-in-fuel alarm is available to notify the user when this action is required, see following pages, this is especially useful in the solid metal bowl (ISO10088) variants.

If the fuel tank is located much lower than the KWA separator, the cover of the KWA must be opened before water and dirt can be released. In this case, after removing the water and dirt, top up the KWA Separator with clean fuel again, filling it to the brim.

When the filter element is replaced, it should be steadily rotated while being carefully withdrawn from the housing. The new element is inserted by reversing this procedure. In addition to the standard 30 micron, there are options for both 10 and 60 micron replaceable elements. After replacing the element, always check the compression seal and cover seal (and replace if necessary). It is not necessary to air-bleed the system after draining water and dirt of after changing the element.

Replacement Elements

For each model in the Separ KWA range, there are 3 replacement filtering elements options available. The standard fit, unless otherwise specified at time of ordering, is the 30 micron hydrophobic cellulose paper element. This can be identified by the last 2 digits of that part number, for example the 30 micron element for the KWA-50 is part number 20130. For each model, a 10 micron paper and 60 micron stainless steel element is also available; the part numbers follow the same format (e.g. 20110 and 20160s).

In each case, the 10 and 30 micron elements can be back-flushed and reused a couple of times, whereas the 60 micron stainless steel element can be cleaned (using clean diesel for the best results) and reused. With careful handling the stainless steel elements should last the life of the main filter. Please note, for cleaning we do not recommend the use of an air line as this will atomise the fuel and contaminate, causing a health risk.

The seals required for an element change are integral, in other words, the element itself has the required seals. However, when servicing the KWA filter we recommend that the bowl and lid seals are inspected in case they need replacing. Biocides in the fuel, higher bio-diesel mixes and high water levels in the storage tank can cause the fuel to have a higher acidity level. This will mean the seals will require more frequent replacing.