MIMAKI ML Tiger-1800B MKII, Руководство по эксплуатации

Страница: 143 / 174

Chapter 8 Safety Devices and Residual Risks
8-3
8
2
2
5
6
Residual Risks
The operator should confirm that there are no foreign objects such as dust and oil in this machine.
For this reason, the operator needs to schedule a cleaning procedure at the end of the shift, with the machine switched off
and with the help of assistants.
It is forbidden to use flammable fluids for cleaning operations. At the end of the cleaning procedure, the operator should
visually check whether there are any worn or damaged parts (if they occurred, immediately ask for assistance of a
maintenance expert), and whether the parts are firmly fixed (take action as best you can). Pay particular attention to the
maintenance of electrical systems, hoses and other parts that are affected by wear and tear.
Mandatory Requirements and Safety Precautions
Dangerous voltage
In normal operating conditions (excluding electrical cabinet), there are no components of the machine affected by
hazardous voltages. The parts subject to dangerous voltage in the electrical cabinet are protected by the door of the
cabinet that are locked.
Residual voltage
There is a connecting condenser CC inside the frequency converter (inverter) used for adjusting the speed rotation of the
transport roller and take-up roller. This is affected by a very high and dangerous voltage even when the power is turned off.
• When cleaning work using air pressure or water pressure, you need to use goggles and protective mask.
All people near the machine must leave the area because they may be affected by substances and dust.
Avoid that water jets and splashes directly reach the switchboards containing electrical equipment.
• If a fault condition is found, the operator should not start the machine until the problem is resolved. If
these conditions are found at the end of the shift, the operator must put on a warning sign on the control
panel indicating that the machine is being maintained and therefore its re-start is strictly forbidden, before
leaving the workplace. The operator must remove all things that are not essential parts of the machine
(such as tools that you left behind after maintenance work, codes used to handle parts, personal
possessions, etc.) from the machine and its surrounding area.
• Operators and maintenance workers should wear practical and appropriate work clothes and do not wear
necklaces or bracelets. It may be caught in moving parts of the machine. Also, long hair workers apply
hair nets to prevent hair from getting caught.
• The protective guard and the safety device are not removed unless repair or maintenance work is
required. When removing them, make sure to restore them to their original position as soon as you find
the cause of the fault condition, and then restart the machine.
• Before performing any maintenance or repair work in the machine or electrical cabinet, it is necessary to
disconnect the power supply with the master switch of the electrical cabinet.
• There is no condenser in the electrical cabinet that voltage may remain. But even if the master switch of
the electric cabinet is OFF (position to 0), the electrical cable in the vicinity of the switch is still charged.
The power cable connected to the terminal is protected with a special transparent plastic cover.The
location of residual voltages is shown in the map enclosed with the electric circuit diagram. The location
of the residual voltage is shown in the map attached to the electric circuit diagram.
• The frequency converter can be opened after 10 minutes or more have elapsed since the power is turned
off. After opening, parts are affected by voltage, so do not touch that part.
• Due to the clamping of the device, high voltage may occur even if the converter is not functioning.