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5
Cleaning and Maintenance
The cleaning procedure for DPX units must be followed to ensure proper operation
and durability. Failure to follow this procedure may void the warranty.
The DPX unit must be cleaned annually, every 1000 hours, according to the following
procedure.
Note: The System backpressure is expected not to exceed a maximum of 200 millibar at
this stage.
A. Before removing the DPX Centerbody for cleaning, mark the exhaust side (outlet) of
the unit.
B. Remove the DPX Centerbody and with compressed dry air first clean the inlet face
of the unit. Then blow air from the outlet side of the unit until minimum soot is
detected.
DO NOT APPLY COMPRESSED AIR NOZZLE DIRECTLY ON THE FACE OF THE FILTER.
C. Replace the DPX Centerbody on the vehicle in the opposite Flow direction from
which it was removed.
Only in Switzerland you have to use the filter always in the same flow direction.
We do not recommend cleaning DPX units with steam and / or other detergents. Use of
these products may damage and / or deactivate the DPX unit.
MASK, GLOVES AND SAFETY GLASSED SHOULD BE WORN DURING CLEANING
PROCEDURE.
Before normal operations are resumed, a backpressure and opacity reading should be
recorded along with the Part Number/Serial Number of the Filter, and the mileage and
date the maintenance took place.
Following cleaning some smoke may be emitted initially, but this will rapidly disperse.
Having removed the soot and ash particles from the filter, the operator should dispose
of the contents as recommended by local regulatory legislation
Should any spare parts be required please contact Engelhard quoting the serial number
of the DPX Catalysed Soot Filter System.
Details of Part Numbers and Prices can be found in Pricing & Delivery Section 6 below.
official representation of:
DPX01-Standard Vorlage Englisch.doc
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