19
Maintenance
REPLACING AND ADJUSTING THE MICROSWITCH ASSOCIATED TO THE BOWL
COVER
Look at Figure 20, the safety micro Pos.1 of the cover Pos.2 is mounted to the bracket Pos.3 with two screws
Pos.4 (they are not shown in the picture but are described here below). If you ever come to replace this micro
switch, all you need to do is disconnect the wires and remove the screws Pos.4. Strictly have a licensed
electrician who is familiar with the mixer electric components connect the new micro Pos.1. The switch should
operate with normally closed contacts (the lifting of the guard forces the opening of contacts by the plate
Pos.6). The position of the actuator Pos.5 of the microswitch to the plate Pos.6 of the round pin Pos.7 must
be such that the opening of the contact (and therefore the stop command) occurs when the distance between
the lower edge of the cover Pos.2 and the upper edge of the bowl is less than 75mm. The new switch must
have physical characteristics and performance equal to or better than the old one; in particular, the same
measurements and the same centre distance of the mounting holes, a provision to adjust the switching
point, and a tight closing of the contacts to the
lowered guard. If the above is respected you
should not need to adjust the position of the
microswitch (eventually, the through holes for
the screws, Pos.4, are slightly slotted to allow
minor adjustments); However if necessary,
loosen the screws, Pos.8 and move the holder
with microswitch along the slots Pos.9 to find
the right position; At the end, secure the mount
Pos.3 by tightening the screws, Pos.9. Two
screws with hexagon socket (grains), fit into the
grooves of the pivot pin Pos.10 and prevent the
round bolt Pos.7 from moving against the pin
itself. If you need to extract the grains, before
tightening check threaded holes and niches
are in line and spread on a thin layer of grains
LOCTITE 243 or equivalent. Frequently check
the tightness of the screws Pos.4 and the
screws, Pos.8, as well as the grains described
above.
MOUNTING/DISMOUNTING THE PILLAR
Before starting make sure to wear safety shoes with reinforced toe and safety helmet. This operation should be
performed by one man alone provided that the following instructions are followed:
Look at Figure 21, remove the column Pos.1 as following:
• Fully lift the bowl cover Pos.8 and let it fall back.
• Loosen each of the 4 screws (Pos.2) one at a time until the column Pos.1 rests on the bottom of the bowl.
• Hold firm and position the column Pos.1 as vertical as possible, while extracting the screws Pos.2 and
washers; move the column Pos.1 out of the head Pos.4; then pull it out; the weight of the column is not
particularly heavy, however it is important to hold it well in order to keep it balanced on the arms; keep arms
