Maintenance - EFA SB 326 Originalbetriebsanleitung

6 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 press-
ing the switches (checking
the saw)
Saw won't start when press-
ing 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
Increased wear on belt
Schmid & Wezel
Possible cause
Broken wire in connection cable
Both switches not uniformly
pressed within less than 0.3 s
Front/rear lids not closed properly
or not firmly attached
Motor switch defective
Connecting line not terminated
properly
Motor winding defective
Wires not properly attached to ter-
minals
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 ter-
minals
Guide plate of front guide pulley too
tight or jammed
Wrong torque setting
Saw belt guide worn
Seite / Page
25 / 33
Solution
Check electric conductivity of controller's
terminal connections (no power sup-
plied!):
a) Terminals UVW or 1, 2, 3 (check mo-
tor connection)
b) Terminals No.: 3 - 4 (2. Handle)
c) Terminals No.: 5 - 6 (Motor switch and
lid guard)
Press both switches again within 0.3 s
Check and firmly close lids until contact
is made
Check electr. function, replace if neces-
sary
Check, re-tighten/re-attach terminals
Check motor, replace if necessary
Check terminals and remove fault
Check and replace power contactor as
necessary
Check and replace 2-hand safety block
as necessary
Check dimensions according to the an-
nex 13.4 "Cross-sections of wires" and
change if 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
Check and replace power contactor as
necessary
Check terminals and remove fault
Check for smooth operation, use torque
wrench to loosen or re-grease as neces-
sary
Check using torque wrench (torque too
great)
see section 5.2 "Saw belt guide"
Stand / Version
01 / 2020