Installation and operating instruction
Oil burner WM-L20/2-A R (W-FM100/200)
9 Servicing
83252902 1/2019-09 La
47-84
9.2 Service plan
Components Criteria / design lifespan
(1
Service procedure
Fan wheel Soiling Clean
Damage Replace
Coupling cross on coupling
centre piece
Wear Replace
Recommendation: at least every 2 years
Air duct Soiling Clean
Air damper Soiling Clean
Distance to housing < 0.3 mm Adjust [ch.9.8]
Sleeve bearing air damper shaft Has play Replace [ch.9.8]
Air regulator cladding Damage/brittleness/soiling Replace
View port cover Air escaping Replace
Ignition cable Damage Replace
Ignition electrode Soiling Clean
Damage/wear Replace
Combustion Manager 250 000 burner starts or 10years
(2
Replace
Flame sensor Soiling Clean
Damage
250 000 burner starts or 10years
(2
Replace
Flame tube/diffuser Soiling Clean
Damage Replace
Oil nozzle Soiling/wear Replace
Recommendation: at least every 2 years
Oil hose Damage/oil escaping Replace
Recommendation: every 5years
Pressure hose nozzle assembly
(with combustion head exten-
sion)
Damage/oil escaping
5 years
Replace
Oil solenoid valve Soundness
250 000 burner starts or 10years
(2
Replace oil pump or solenoid valve
Oil quantity regulator Excess air due to wear
Hysteresis behaviour/damage/oil escap-
ing
250 000 burner starts or 10years
(2
Replace
Oil pressure switch Switch point Check
250 000 burner starts or 10years
(2
Replace
(1
The specified design lifespan applies for typical use in heating, hot water and steam systems as well as for thermal
process systems to EN746.
(2
If a criterion is reached, carry out maintenance measures.