Quality Monitoring Instruments QMI MULTIPLEX Manual page 64

Engine Oil Mist Detection System
MULTIPLEX
MAINTENANCE PROCEDURES
The QMI MULTIPLEX comprehensive fault finding program greatly simplifies the fault
analysis procedure. Fault indicators, whether operational or component breakdown, are
built into the program. In the event of their occurrence a fault code (listed in the Fault
Directory on the right hand side of the display fascia) is displayed digitally against the
faulty channel number. In the event of a component failure in the Monitor or fan the
CPU light will be displayed (see Fault Directory).
In all fault indications the fault warning relay will de-energise. The relay may be returned
to normal through the 'RESET' function. The warning indication on the digital display
will persist until the fault is dealt with correctly.
DETECTOR HEAD CLEANLINESS
Very often, due to difficult working conditions and lack of experience, the lenses in the
Detector Head are not properly cleaned. This problem is made more difficult because
the operator has to return to the Monitor in order to check the cleanliness of the lenses.
A simple way to help the cleaning process is to use the suggestion on Part 5-4.
A large percentage of returns under Warranty are in fact due to dirty lenses.
FILTER CLEANING
It is important to inspect and clean the
filters every 30 days
Carry out the following procedure when readings on the Monitor go down.
In the inlet boss of the Detector base plate is situated a stainless steel mesh filter that
should be cleaned from time to time. There are three ways of doing this:
1. Extract filter from boss and place in a good solvent solution
2. Clean filter in an ultrasonic bath
3. Blow compressed air into the filter (always blow towards the crankspace)
If none of these methods unblock the filter, replace the filter with a new one.
EM6/March 2015 Maintenance Part5-3
EMAIL qmi@oilmist.com WEBSITE www.oilmist.com 4 East Barnet Road, London, EN4 8RW, UK. TEL +44 (0)20 7328 3121