KITO ER2 Series User Manual

104
Troubleshooting (continued)
Internal wiring
Symptom Cause Remedy Main factor Countermeasure
Electric chain hoist
does not operate.
Breakage of wire Check the wire. Repair the wire if broken. Vibration, impact Use the electric chain
hoist avoiding the impact.
Lead wire damaged at
assembling
Be careful not to have
the lead wire caught
when assembling.
Check the terminal. Repair the terminal
without conduction.
Improper crimping Use the proper
crimping tool.
Wrong wiring Check the wiring in accordance with the
wiring diagram. Correct the wiring if it is
wrong.
Wrong wiring at
assembling
Correct the wiring in
accordance with the
wiring diagram.
Loosened terminal
screw (results in
heat generation to
burn)
Tighten the loosened screws. Insufficient tightening
at assembling
Tighten screws
securely.
Vibration, impact
Use the electric chain
hoist avoiding the impact.
Incomplete
connection of plug,
connector and
insertion terminal
Connect plug, connector and insertion
terminal correctly if they are not
connected securely.
Tighten the lock ring of the connector
plug securely.
Incomplete connection
at assembling
Connect plug,
connector and
insertion terminal
securely.
Transformer
Symptom Cause Remedy Main factor Countermeasure
Electric chain hoist
does not operate.
(Electromagnetic
Contactor does not
operate.)
Burnout or
breakage of
transformer coil
Measure the resistance of transformer
coil. If it is infinity, replace the
transformer.
Over voltage Operate the electric
chain hoist with the
rated voltage.
Excessive inching or
plugging operation
(consecutive
impression of start
rush current)
Do not perform
excessive operation.
Over current due to
defective operation
of Electromagnetic
contactor
Refer to the items
of Electromagnetic
Contactor.
Vibration, impact
Use the electric chain
hoist avoiding the impact.
Breakage of lead
wire
Check the lead wires of the transformer.
Repair or replace the transformer if the
lead wire has no conduction.
Vibration, impact Use the electric chain
hoist avoiding the
impact.
Chapter 3 Troubleshooting
3
Internal wiring / Transformer Troubleshooting

KITO ER2 Series Specifications

General

Control Voltage	24V
Duty Cycle	40% ED
Protection Class	IP55
Temperature Range	-20°C to +40°C
Type	Electric Chain Hoist
Frequency	50/60 Hz
Motor Insulation	Class F
Brake Type	Electromagnetic
Load Chain Grade	Grade 80
Ambient Temperature	-20°C to +40°C
Power Supply	3-phase
Lift Height	3 to 30 meters
Chain Falls	1 or 2
Voltage	200-240V, 380-480V