EFA SB295E, Translation Of The Original Operating Instructions, Page: 48 / 72

Schmid & Wezel Page
48 of 72
Version
11 / 2011
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
Possible cause Remedy
Saw won't start when
pressing the switches
(checking the saw) Broken wire in connection cable 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)
Both switches not uniformly
pressed within less than 0.3 s Press both switches again within 0.3 s
Subminiature switch (6) defective Check for electr. function; replace as
necessary
Front/rear lids not closed
properly or not firmly attached Check and firmly close lids until
contact is made
Motor switch defective Check electr. function, replace if
necessary
Connecting line not terminated
properly Check, re-tighten/re-attach terminals
Motor winding defective Check motor, replace if necessary
Check electr. passage through
submin. switch (6) from front
handle to terminal Replace or re-connect cable or
submin. switch
Saw won't start when
pressing the switches
(checking the controller) Wires not properly attached to
terminals Check terminals and remove fault
Power contactor (labelled
K1/K1M) defective Check and replace power contactor
as necessary (part no.: 001604193 for
42V, 001604189 for 400V saw)
2-hand safety block (labelled
KO) defective Check and replace 2-hand safety
block as necessary (part no.:
001606418)
Saw starts when switches
are pressed but stops
under applied load Wire cross-section too small
and/or cable too long Check dimensions according to
Annex
12.6 "Cross-sections of wires"
and change as necessary
Mains voltage drop Check and remove voltage drop
(S&W provide the relevant test
equipment)
Belt slack Use Tightening torque wrench to
tighten belt
Saw won't always start
when pressing the
switches or intermittently
starts/stops 2-hand safety block (labelled
KO) defective Check and replace 2-hand safety
block as necessary (part no.:
001606418)
Power contactor (labelled
K1/K1M) defective Check and replace power contactor
as necessary (part no.: 001604193 for
42V, part no. 001604189 for 400V
saw)
Wires not properly attached to
terminals Check terminals and remove fault