MAINTENANCE MANUAL
Speedster
page 35
7.
Remove the electric multi-connector from the steam boiler temperature controller.
8.
Remove the screw underneath the level control unit, dangle aside (do not pull the
electrical wiring from the unit).
9.
Remove the bracket under level control unit with Allen key 2.5 mm, leave
temperature controller in bracket, lay aside.
10.
Pull electrical connections from probes.
Beware!
Unscrew the outer fittings (large nuts). The inner nut holds a Teflon sealing which,
once tightened, cannot be removed from the outer fitting without damaging it.
Furthermore, the operating level probe is also bent on the inserted end, it cannot
be pulled through the Teflon sealing.
Since there is not enough space to handle a spanner as you normally would, you
have to use an unconventional approach.
11.
Put a 19 mm spanner perpendicular on the outer fitting of the probe. With an
adjustable spanner on the 19 mm spanner, twist the fitting from the boiler (see
figure 22).
Figure 22. Showing unconventional approach to remove operating level probe. The level
control unit is dangling down (not visible), the bracket with steam boiler temperature
controller is still mounted.
12.
Clean the metal end of the probes with a well-used plastic scrub pad (see figure
23). Scale and dirt adheres better on a rough surface: try not to scratch the
probes.
13.
Clean the threads on the probes and boiler.
14.
Apply a drop of Loctite, or a few windings of Teflon tape, on the threads and
remount the probes. Use the same technique as when removing. Turn the probes
in position: the bent flat ends of the probes should point downwards.