Yale Mtrac YMT-M Series, Перевод оригинальных инструкций по эксплуатации и обслуживанию

Страница: 13 / 22

13 13
Mtrac endless winch
Problem Possible cause Fault elimination
Motor does not run
at all
M No power supply
a) Control system switched off
b) No power supply in the net-
work
c) For three-phase motors:
the phase sequence relay
blocks control
d) Supply line between mains
connection and control sys-
tem interrupted
a) Turn the emergency-stop button
clockwise until it pops out.
b) Determine the cause and wait until
power is available again
c) Turn the phase changer in the plug
through 180°
d) Check supply and control cables,
fuse links and connections or wiring
of the control system and repair, as
required
N Incorrect connection,
e.g. missing neutral conductor
Compare connection and circuit dia-
gram, if necessary conversion by Yale
Industrial Products
O Safety cut-off due to overheat-
ing
a) One of the phases is missing
b) Motor cooling insufficient
c) Overvoltage or undervoltage
a) Check/repair fuse links, supply line
and connections
b) Clean motor cover
c) Measure voltage and power con-
sumption on motor with load,
increase cable cross sections, if
required
P Brake does not release (no
click when switching on/off)
a) Power cable, coil or brake
rectifier defective
b) Brake rotor worn
a) Have the supply line, brake coil and
rectifier checked and repaired/re-
placed by an electrician
b) Have the winch repaired
Motor hums strongly
or rope drive scrunch-
es, although up and
down travel is pos-
sible
Q Overheating
See item O for individual causes and
their elimination
R Dirt in the rope drive
Travelling on may cause
damage to rope and rope
drive.
If possible replace winch immediately
and have it checked/repaired by Yale
Industrial Products or by an authorised
hoist service company