Maintenance/repair
Maintenance operations
Checking the rotor thickness
8
47
Lenze ¯ BA 33.0008 ¯ 5.0
Check the mounting dimension of the manual release
( Stop!
Dimension "s" must be maintained! Check air gap "s
L
"!
(^ operating instructions)
Size s
L
(mm) s
+0.1
(mm) s + s
L
(mm)
06
0.2 1 1.2
08
10
12
0.3 1.5 1.814
16
18
0.4 2 2.4
20
25 0.5 2.5 3
8.3.4 Checking the rotor thickness
} Danger!
When the rotor thickness is checked, the motor must not run.
1. Remove fan cover and cover ring if attached.
2. Measure rotor thickness with calliper gauge. If a friction plate is attached, ensure
a flanged edge at the outer diameter of the friction plate.
3. Compare measured rotor thickness with minimally permissible rotor thickness
(values ^ 49).
4. If required, exchange the entire rotor. Description ^ 49.
8.3.5 Checking the air gap
1. Check the air gap "s
L
" near the fixing screws between the armature plate and
stator using a feeler gauge (^ 49).
2. Compare air gap measured to maximally permissible air gap "s
L
max.
" (^ 49).
3. If required, set air gap to "s
LN
" (^ 48).
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