DENGENSHA WS-100, Инструкция по эксплуатации

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6
DENGENSHA
(c) Amount of cooling water prescribed in the specification of the equipment should be
provided in the following manner. It is also important to keep water temperature
prescribed in the specification in order to maintain the cooling capacity as well as
water quantity
：
i)
Maintain a given water pressure prescribed in the specification.
ii)
Check the water flow periodically to prevent clogging & overheation conditions.
iii)
Perform maintenance of cooling water circuit as prescribed in the specification.
When cooling capacity is deteriorated, the equipment may generate faults or a fire may
generate due to overheated components such as welding transformers, conductors,
electrodes, thyristors.
CAUTION
(2) Upper electrode falls when air supply is stopped
In general, when air supply for welding machine is stopped, the upper electrode falls
spontaneously due to deadweight. Though its falling speed is not high, there is a
possibility of occurring problems
：
injury may occur if hands, fingers, a part of body
are caught, or work piece be deformed if it is between the electrodes.
(3) Proper pressurizing force must be established
Proper pressurizing force must be established before passing welding current
through the electrodes. If current is passed through the electrodes when the
pressurizing force is too low, a dangerous explosion of sparks and splatter will occur,
causing serious injury or burns.
EXAMPLES:
(a) When pressure of 0.1Mpa or less has been established causing uncontrolled drifting
down of the electrode.
(b) When the squeeze time is set too short and the electrode completes the weld circuit
under load.
(4) Magnetic field effect
The resistance welding machine generates high magnetic field around the secondary
circuit when energized. This magnetic field has an influence on operation of certain type
of sensors, watch, and magnetic cards. For the same reason, a person who uses a heart
pace maker is prohibited from coming up to the resistance welding machine during
operation.
(5) Equipment fall down prevention
Equipment may fall down depending on models when an earthquake occurred. Perform
installation work of the equipment according to the instruction manual.
(6) Safety information of peripheral devices
Information about possibilities of danger of peripheral devices of this equipment such as
conveyors, feeders, robots should also be provided to workers.