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Troubleshooting
47. MM Models: Cylinder Motor Does Not Run or Reverse With Door Closed,
Cycle Selected and Start Button Pressed In Reversing Mode or
Nonreversing Mode (continued)
208-240 Volt/60 Hertz/3 Phase Gas and Steam Reversing and 480 Volt/60 Hertz/3 Phase Steam
Reversing Models
NOTE: If unit will not reverse when reversing is selected, check for proper operation and wiring of reversing
switch. Replace if necessary.
Is
there voltage to
L1, L2, L3 on the forward
contactor or voltage to
terminals X, Y and Z on
the reversing
contactor?
TMB2174S-b
Is there
voltage to the input
side of the auxiliary
contacts on the motor
contactor?
Is there
voltage across the
coils of either the
forward or reversing
contactor?
Replace either
the forward or
reversing
contactor.
Is there
voltage at the CW or
CCW terminal on the
solid state
timer?
Correct wiring
between the
solid state timer
and either the
forward or
reversing coil.
Yes
No
Yes
Continued from
previous page
Is there
voltage to L1, L2
and L3 at
motor?
Correct wiring
between
cylinder motor
and forward or
reversing
contactor.
Replace
motor
contactor.
No
Is there
voltage at L1 of the
solid state
timer?
Replace
solid state
timer.
No
Yes
Is there
voltage to the output
of the auxiliary contacts
on the motor
contactor?
Correct wiring
between
motor
contactor and
solid state
timer.
Unit
operational.
Yes
No
Yes
No
Yes
No
Yes
Correct wiring
between motor
contactor and
TB1-L1 supply.
No
Содержание ATB50CG
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