Repair manual

12
Control diagram
Functional diagram
2 / Product Information
Drawing 3
Nozzle holder heater
(On at temp. < 5 °C)
Water pump
Solenoid valve
Ignition spark
generator
Electric Motor
From control unit 25 1818 53 00 00,
switching on and off the nozzle holder
heater is temperature-controlled
Operation
HYDRONIC
OFF
Delayed shutoff
HYDRONIC
ON
Sec.
3
10
10
60
180
Component test
From control unit 25 1818 53 00 00
Drawing 4
HYDRONIC
ON
OFF ON
OFF ON
Normal operation
Hydronic
OFF
delayed shutdown
3 min.
Regulation - normal
Regulation when "Lower Temperature" selected
Vehicle blower
ON
Vehicle blower
OFF
t °C
78
73
70
65
55
50
5
0