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
Sleeve bearing air damper shaft Has play
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 10 years
(2
Replace
Flame sensor
Soiling
Clean
Damage
250 000 burner starts or 10 years
(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 5 years
Pressure hose nozzle assembly
(with combustion head exten-
sion)
Damage/oil escaping
5 years
Replace
Oil solenoid valve
Soundness
250 000 burner starts or 10 years
(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 10 years
(2
Replace
Oil pressure switch
Switch point
Check
250 000 burner starts or 10 years
(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 EN 746.
(2
If a criterion is reached, carry out maintenance measures.