TROUBLESHOOTING GUIDE
Motor and Machine Operation
N
O
I
T
U
L
O
S
)
S
(
E
S
U
A
C
Y
L
E
K
I
L
M
E
L
B
O
R
P
Motor will not start.
H
J
D
WO
R
Y
U
H
S
R
U
S
U
R
I
H
Q
LO
U
H
Z
R
S
N
F
H
K
&
H
J
D
WO
R
Y
Z
R
/
2SHQFLUFXLWLQPRWRURUORRVHFRQQHFWLRQV
,QVSHFWDOOOHDGFRQQHFWLRQVRQPRWRUIRUORRVHRURSHQ
FRQQHFWLRQV
Fuses or circuit
6KRUWFLUFXLWLQOLQHFRUGRUSOXJ
5HSDLURUUHSODFHFRUGRUSOXJIRUGDPDJHGLQVXODWLRQDQG
breakers blow.
VKRUWHGZLUHV
Motor fails to develop
3RZHUVXSSO\FLUFXLWRYHUORDGHGZLWKOLJKWV
5HGXFHORDGRQFLUFXLW
full power (output of
DSSOLDQFHVDQGRWKHUPRWRUV
motor decreases
8QGHUVL]HGZLUHVRUFLUFXLWVWRRORQJ
,QFUHDVHZLUHVL]HVRUUHGXFHOHQJWKRIWKHFLUFXLW
rapidly with decrease
in voltage at motor
terminals).
Motor overheats.
0RWRURYHUORDGHGGXULQJRSHUDWLRQ
5HGXFHORDGRQPRWRUWDNHOLJKWHUFXWV
$LUFLUFXODWLRQWKURXJKWKHPRWRUUHVWULFWHG
&OHDQRXWPRWRUWRSURYLGHQRUPDODLUFLUFXODWLRQ
Motor stalls or shuts
0RWRURYHUORDGHGGXULQJRSHUDWLRQ
5HGXFHORDGRQPRWRUWDNHOLJKWHUFXWV
off during a cut.
6KRUWFLUFXLWLQPRWRURUORRVHFRQQHFWLRQV
5HSDLURUUHSODFHFRQQHFWLRQVRQPRWRUIRUORRVHRUVKRUWHG
WHUPLQDOVRUZRUQLQVXODWLRQ
V
H
Q
L
K
F
D
P
I
R
U
H
E
P
X
Q
H
F
X
G
H
U
U
H
N
D
H
U
E
W
L
X
F
UL
F
W
F
H
U
U
R
F
O
O
D
W
V
Q
,
G
H
S
S
LU
W
U
H
N
D
H
U
E
W
L
X
F
UL
&
UXQQLQJRQWKDWFLUFXLWFLUFXLWRYHUORDG
Blade slows when
9EHOWORRVH
7LJKWHQ9EHOW
cutting or makes a
9EHOWZRUQRXW
5HSODFH9EHOW
squealing noise,
especially on start-up.
Loud, repetitious noise
3XOOH\VHWVFUHZVRUNH\VDUHPLVVLQJRUORRVH
,QVSHFWNH\VDQGVHWVFUHZV5HSODFHRUWLJKWHQLIQHFHVVDU\
coming from machine.
U
H
Y
R
F
Q
D
I
P
L
K
V
U
R
Q
D
I
Q
H
W
K
J
LW
Q
R
LW
L
V
R
S
J
Q
LW
Q
X
R
P
U
H
Y
R
F
Q
D
I
W
V
X
M
G
$
U
H
Y
R
F
H
K
W
J
Q
LW
WL
K
V
L
Q
D
I
U
R
W
R
0
V
WO
H
E
9
H
F
D
O
S
H
5
G
H
J
D
P
D
G
H
U
D
V
WO
H
E
9
Vibration when
H
IL
Q
N
H
F
D
O
S
H
U
U
R
Q
H
W
K
J
L
7
H
IL
Q
N
G
H
J
D
P
D
G
U
R
H
V
R
R
/
running or cutting.
H
F
D
O
S
H
5
W
O
H
E
9
G
H
J
D
P
D
'
V
J
Q
LU
D
H
E
G
D
H
K
U
H
WW
X
F
H
F
D
O
S
H
U
N
F
H
K
&
V
J
Q
LU
D
H
E
G
D
H
K
U
H
WW
X
F
Q
U
R
:
Table
PROBLEM
LIKEL
N
O
I
T
U
L
O
S
)
S
(
E
S
U
A
C
Y
Tables are hard to
7DEOHORFNLVHQJDJHGRUSDUWLDOO\HQJDJHG
&RPSOHWHO\ORRVHQWKHWDEOHORFN
adjust.