Brake(0.1～0.4Kw) - Mitsubishi Electric Super Helicross Series Instruction Manual

9. Brake(0.1～0.4kW)
1) Structure and operation
Fig.8 shows the structure of the brake. The non-excitation braking method (spring-driven braking method) is used for all the models
2)Gap adjustment procedure (Refer to the structural drawing of the brake (Fig.8).
If the brake is abraded due to long use, the gap between the field core and Armature will be
larger than the limit gap specified in Table 3. Such a large gap may cause a braking operation
error or brake releasing error. For this reason, if the gap is larger than the limit gap, adjust the
gap by following the procedure below.
Step １
Loosen the fan cover clamp screws (4 screws), and then remove the fan cover.
The fan is fixed by a C-shaped snap ring. Remove the fan and End-face V
Step ２ Equally adjust the gap (A) between the field core and Armature to the initial gap seal(outdoor type), and then loosen screws (item 3) to remove the brake cover
(item 1).
Step ３ Use the specified thickness gauge (initial thickness gauge) to measure the gap. If
(refer to Table 3) by tightening the outer hexagon nut (item 5).
the lower limit thickness gauge can be inserted into the gap but the upper limit
thickness lower limit thickness gauge cannot be inserted into the gap at any point
Step ４ Attach the brake cover, and then tighten the screws (item 3) through the seal
around the cores, judge that gap is properly adjusted.
washers (item 2).
Notes: To adjust the gap, observe the following items.
Adjust the gap so that the gap difference (difference between the maximum gap and
minimum gap) is reduced to 0.05 mm or less.
Periodically check the gap.
Be careful not to damage the O-ring (item 6) during adjustment. The waterproofing or
soundproofing function may be deteriorated.
If the thickness of the brake lining is reduced to the limit value specified in Table3,
replace the lining.
The brake cover ① depth size of 0.1kW and
0.2kW differs from 0.4kW.
Fig.8
－ 9 －
Item DESCRIPTION
1 Brake cover
2 Seal washer
3 screw
4 spring
5 Hexagon nut
6 Ｏ-ring
7 Fan cover
8 Clamp screw
9 Field core
10 Armature
11 Brake lining
12 Side plate
13 End-face V seal
(out door type)
14 Fan
Step
Step
Step