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2.
Mark all cables (4) prior to disconnection.
3.
Disconnect all cables (4) from solenoid
switch (1).
Note:
The solenoid switch is secured to the rail (2)
by a spring clip (3).
4.
Pull out the spring clip with a screwdriver and
slide the solenoid switch off the rail.
5.
Fit a new solenoid switch on the rail and fully
engage the spring clip.
6.
Connect up all wires as marked previously.
7.
Close the control box and tighten the screws.
Final steps
1.
Open shutoff valves in the supply and return line to/from preheater.
2.
Disconnect preheater power sources.
3.
Switch on preheater.
178 | Coolant Circuit, General, High-Temperature Circuit | MS15058/04E 2018-12
TIM-ID: 0000081912 - 002