Maintenance - EFA SB 322 E Betriebsanleitung

5. Maintenance

Malfunctions may occur during operation, but these are generally relatively simple to remedy. Table 1:
"Faults and corrective measures" describes these malfunctions together with their possible causes
and suggests corrective measures.
Malfunction
Saw won't start when
pressing the switches
(checking the saw)
Saw won't start when
pressing the switches
(checking the controller)
Saw starts when
switches are pressed but
stops under applied load
Saw won't always start
when pressing the
switches or intermittently
starts/stops
Schmid & Wezel
D-75433 Maulbronn
Possible cause
Broken wire in connection cable
Both switches not uniformly
pressed within less than 0.3 s
Subminiature switch (6)
defective
Front/rear lids not closed
properly or not firmly attached
Motor switch defective
Connecting line not terminated
properly
Motor winding defective
Check electr. passage through
submin. switch (6) from front
handle to terminal
Wires not properly attached to
terminals
Power contactor (labelled
K1/K1M) defective
2-hand safety block (labelled
KO) defective
Wire cross-section too small
and/or cable too long
Mains voltage drop
Belt slack
2-hand safety block (labelled
KO) defective
Power contactor (labelled
K1/K1M) defective
Wires not properly attached to
terminals
Remedy
Check electric conductivity of
controller's terminal connections (no
power supplied!):
a) Terminals UVW or 1, 2, 3 (check
motor connection)
b) Terminals no.: 3 – 4 (2nd handle)
c) Terminals no.: 5 – 6 (motor switch
and lid guard)
Press both switches again within 0.3
s
Check for electr. function; replace
as necessary
Check and firmly close lids until
contact is made
Check electr. function, replace if
necessary
Check, re-tighten/re-attach terminals
Check motor, replace if necessary
Replace or re-connect cable or
submin. switch
Check terminals and remove fault
Check and replace power contactor
as necessary (part no.: 001604193
for 42V, 001604189 for 400V saw)
Check and replace 2-hand safety
block as necessary (part no.:
001606418)
Check dimensions according to
Annex 11.6 "Cross-sections of
wires" and change as necessary
Check and remove voltage drop
(S&W provide the relevant test
equipment)
Use torque wrench to tighten belt
Check and replace 2-hand safety
block as necessary (part no.:
001606418)
Check and replace power contactor
as necessary (part no.: 001604193
for 42V, part no. 001604189 for
400V saw)
Check terminals and remove fault
Page
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Version 1
07.2012