7.
7-2 Releasing the fall-arrest device
1
2
3
4
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Spring Balancer Users Manual
Troubleshooting
7-1 Countermeasures?
● Do not remove the tool (equipment) attached to the wire rope end until the cause of
the failure is identified. If the tool (equipment) is removed, the wire rope may be
quickly wound up, causing an injury.
● If you notice anything unusual, stop the operation immediately. After checking the
items listed in the table below, appropriate measures should be taken by a
maintenance operator who has developed sufficient knowledge and operating skill
for the balancer.
● If the situation does not relate to any of the listed items in the table below, contact
us or your dealer.
Failure
Reason
Measure
・
The wire rope cannot
be pulled out or
wound.
・
The drum lock is activated.
・
Release the drum lock.
See “6-3 Operation method of the drum
lock”.
・
The spring tension is
increased too much and the
spring has been tightly
wound.
・
Decrease the spring tension.
See “0 Installation of tools (equipment)
and adjustment of the spring tension”.
・
The spring tension is
decreased too much and the
fall-arrest device has been
activated.
・
Release the fall-arrest device.
See “7-2 Releasing the fall-arrest
device”.
・
The wire rope came off the
groove on the drum and is
caught between the casing
and the drum.
・
Return the wire rope to the groove on the
drum.
・
The spring has been
ruptured.
・
Replace the spring.
See “2-4 Replacement of the spring” in
“Repair Manual”.
If the fall-arrest device is activated, for example, when the spring tension is reduced too much, release
the fall-arrest device with the following procedure.
Confirm that the tool can be moved up and down, and that the fall-arrest device is released.
If the tool descends after being lifted up by hand and then released, turn the worm in the “+”
direction (clockwise) until the tool starts ascending. At this time, never remove the tool.
If the fall-arrest device cannot be released with the procedure above, the spring is ruptured.
Replace the spring according to “2-4 Replacement of the spring” in “Repair Manual”.
Move the tool (equipment) up and down manually.
The tool can be moved up and down within approximately 70 mm to 160 mm.
WARNING
CAUTION
