HP Scitex FB7500 Essential Health and Safety Instructions Rev.C - Page 21

Noise, Safety Precautions While Servicing

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Noise When the UV system is functioning, the auxiliary equipment, such as fans and coolers, produce noise. Noise levels can increase when the noise from the printing equipment is included in the readings. For more information, see Mechanical Safety on page 8. Safety Precautions While Servicing Important Information Danger This equipment operates at high voltage and is therefore potentially dangerous. All precautions must be taken in servicing this equipment. The equipment must be disconnected at the main circuit breakers before opening any of the access doors. Shutting Down before Servicing It is compulsory to shut down the UV system (see Shutting Down the Entire UV System on page 18) before performing the following service procedure: • Cleaning the UV cooler water filter In addition, it is compulsory to power down the machine and the UV system before performing the following service procedures: • Cleaning the quartz plate • Replacing the UV lamp • Cleaning the UV lamp housing reflectors • Replacing the UV lamp housing filters Note For information about performing these procedures, see the chapters that follow. For information about shutting down the machine. Earth Leakage This equipment is fitted with a high voltage leak detector circuit. If high voltage leaks to earth occur due to a fault, the leak detector detects the leak and switches off the equipment immediately. The fault-finding circuit must be checked regularly, at least once a day, to ensure that it is functioning correctly. Control System Cleaning It is essential that all contactors and relays are kept clean and free of dirt and dust. These should be checked regularly, particularly in extremely dusty or powder-charged working rooms. High Voltage Connections Careful checks should be kept on the lamp connections and high voltage connections within the equipment head to make sure that these do not become dirty or coated with powder or other possible conducting material. They should be cleaned regularly (whenever the lamp is changed, and possibly more 13

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13
Noise
When the UV system is functioning, the auxiliary equipment, such as fans and
coolers, produce noise. Noise levels can increase when the noise from the
printing equipment is included in the readings. For more information, see
Mechanical Safety
on page 8.
Safety Precautions While Servicing
Important Information
Danger
This equipment operates at high voltage and is therefore potentially dangerous. All
precautions must be taken in servicing this equipment. The equipment must be
disconnected at the main circuit breakers before opening any of the access doors.
Shutting Down
before
Servicing
It is compulsory to shut down the UV system (see
Shutting Down the Entire
UV System
on page 18) before performing the following service procedure:
•
Cleaning the UV cooler water filter
In addition, it is compulsory to power down the machine
and
the UV system
before performing the following service procedures:
•
Cleaning the quartz plate
•
Replacing the UV lamp
•
Cleaning the UV lamp housing reflectors
•
Replacing the UV lamp housing filters
Note
For information about performing these procedures, see the chapters that follow. For
information about shutting down the machine.
Earth Leakage
This equipment is fitted with a high voltage leak detector circuit. If high
voltage leaks to earth occur due to a fault, the leak detector detects the leak and
switches off the equipment immediately.
The fault-finding circuit must be checked regularly, at least once a day, to
ensure that it is functioning correctly.
Control System
Cleaning
It is essential that all contactors and relays are kept clean and free of dirt and
dust. These should be checked regularly, particularly in extremely dusty or
powder-charged working rooms.
High Voltage
Connections
Careful checks should be kept on the lamp connections and high voltage
connections within the equipment head to make sure that these do not become
dirty or coated with powder or other possible conducting material. They
should be cleaned regularly (whenever the lamp is changed, and possibly more