Zoomlion ZCC2600 User Manual

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Maintenance Manual for Crawler Crane
4.11.6 Prevention of electrical parts or cables from catching fires
4.11.6.1 Reasons to start the fire
The fires of electrical parts or cables of electrical system result from wrong operation of relevant
components or circuit, or carelessness of operator, rather than technology failure. In addition,
original electrical parts are most important during maintenance. The influence of use of
non-original parts on electrical system is often ignored owing to great difficulty of research, thus
causing the failure of circuit.
The alive wire can generate slight heat. The strong current will lead to high temperature, thus
causing fire. In order to prevent this situation occurring, even fire, the fuse must be installed in
all circuits. If permissible maximum current is exceeded, the fuse will cut off the current.
Therefore, the failure of fuse is one of the main reasons to catch fire.
Other reasons to cause fire:
a) Use the cables or cable connectors which are not approved by manufacturer or have
defects. For example, the length of cable is not enough.
b) Use the expendable parts or actuating elements such as relay, motor, switch, light etc.,
which are not approved by manufacturer or have defects.
c) Overloading of cables and fuses.
d) Install an improper battery whose dimensions are too large and which does not comply
with design requirements (install battery box with too large dimension, the positive terminal
may cause short circuit).
e) After the electrical parts are cleaned by water or steam, the moisture penetrates into the
components of the electrical system.
f) The condition of electrical system is poor due to lack of inspection, maintenance and
service work.
To sum up, the fire may be caused by single factor or joint factors.
CAUTION
(1) When short-circuit occurs, the fuse can protect the cables of electrical system.
(2) Do not make bridge connection of fuse.
(3) Do not adopt high-current fuse in any cases.
4.11.6.2 Prevention of electrical parts or cables from catching fires
Fire of the electrical parts or cables can be prevented, and effective measures can be taken to
avoid such danger.
Precautions:
a) Inspect or exam the electrical devices of the crane regularly.
b) Correct some deficiencies immediately, such as, loose connection, cable heat. Similarly,
find reasons for this in time and correct them.
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Zoomlion ZCC2600 Specifications

General

Brand	Zoomlion
Model	ZCC2600
Category	Construction Equipment
Language	English