Operating Failures And Their Causes - Pfaff ESW BETA SL Série Traduction Du Manuel D'utilisation Original

Electric wire rope winch BETA SL
E nglish
6

Operating failures and their causes

Failure
Winch does not operate
Load does not stop when
motor is switches off
Winch will not lift load, is
overheating, and / or does
not lift at rated speed.
Winch does not lift with in-
tegrated overload protec-
tion system.
Winch lifts, but does not
lower.
Winch lowers, but does not
lift
Oil leak
Disposal:
After having placed out of service, the parts of the hand winch have to be recycled or
disposed according to legal regulations!
technische Änderungen vorbehalten
Cause
No power to winch motor
Motor is connect wrong
Fuse is effective
Incorrect voltage or frequency Compare voltage and frequency rating on winch
Contactor failure
Winch is overloaded
Motor is burned out.
Brake does not open
Defective transformer
Motor brake is worn out
Brake is incorrectly electrically
connected
Brake air gap too large
Winch is overloaded.
Rotor is dragging in stator.
Voltage to low.
Overload protection system is
defective.
Overload protection is tripped,
winch is overloaded.
"Down" or "Up" circuit is open. Check circuit for loose connections.
Fault in the control circuit
Improper oil plug.
Oil plug is loosened.
No oil plug gasket.
Oil ventilation plug at wrong
place (overhead situated).
If leak occurs at places other
than oil plug.
design changes under reserve
04.01.401/1000
Elimination
Check connections, plugs, cables and fuses
Check terminals and if necessary change phasing of
hoist.
Insert new fuse, press button.
name plate with power supply
Check for voltage drop at winch power supply con-
nection while winch is operated under load.
Check contactor for wear and burn marks, if neces-
sary replace
Check suspended load. Reduce the load The reset-
ting of the overload protection function is carried out
by pressing the function key "Down".
Replace motor.
Check electricity supply
Check transformer, if necessary replace.
Send wire rope winch in for inspection (see page 27)
Check electrical connection and change it
Adjust the air gap or replace the brake
Reduce load to rated capacity.
Check for wear motor bearings.
Check voltage at winch power source connections
with winch under load.
Check overload protection system or replace it
through manufacturer.
Reduce the load up to rated load.
Press the function button "Down"
Check limit switch for correct adjustment
Have the fault eliminated by a competent person
Install proper oil plug with gasket.
Tighten plug.
Put in new gasket.
Replace oil ventilation plug with oil filling plug.
Check for loose bolts in gearing and tighten.
Check other sealing in gear box and replace if nec-
essary.
Call service department
changements techniques sous réserve
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