EFA SK23/18 Betriebsanleitung Seite 23

Malfunction
Turn on switch (31), the
motor does not start
Turn on switch (31), motor
runs, motor becomes hot,
saw blade runs
Saw blade stops abruptly
and the machine becomes
hot
Saw blade does not come
to a standstill within 3 sec-
onds
Schmid & Wezel
D-75433 Maulbronn
Table 3: Troubleshooting
Possible cause
1. Connection to works mains defec-
tive
2. Circuit breaker of works mains
FAULT
3. Switch (31) defective or connec-
tion loose
4. Core in lead (22) broken or defec-
tive
5. Fuse blown
6. Field winding (2) or armature (5)
defective
7. Soft-start electronics (20) defec-
tive
8. Soft-start electronics (20) con-
necting lead not correctly connected
to switch (31)
9. Carbon brushes (15) worn
10. Ventilation slots in motor hous-
ing (1) or intermediate flange (9)
clogged/soiled
11. Fan on armature (5) broken
12. Field winding (2) or armature
(5) defective
13. Centrifugal brake is set with too
high a braking effect
14. Centrifugal brake is too weak or
is incorrectly set
15. Brake disc (113) and disc (112)
worn
Seite/ Page
22/ 34
Remedy
Check the connection and install a
new connection, if necessary
Inspect the circuit breaker, switch on
again or replace
Check contacts and connection,
replace switch if necessary
Inspect lead (22) and replace, if nec-
essary
Inspect, replace if necessary
Inspect, replace if necessary
Inspect, replace if necessary
Inspect and connect correctly, if nec-
essary
Inspect, replace if necessary, see
chapter 3.4 "Changing the carbon
brushes" (p. 20)
Clean and unclog ventilation slots
again
Then clean the motor (e.g. with com-
pressed air)
Replace the complete armature (5),
the fan is not available as a spare part
Inspect, replace if necessary
Adjust to a braking time of under 3 s
(see chapter 3.5 "Repair of the cen-
trifugal brake" (p. 21))
Adjust to a braking time of under 3 s
(see chapter 3.5 "Repair of the cen-
trifugal brake" (p. 21))
Inspect, replace if necessary
Ausführung/ Version
02.2014