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Noise
Safety Precautions While Servicing
Important Information
Danger
Shutting Down
before
Servicing
Note
Earth Leakage
Control System
Cleaning
High Voltage
Connections
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.
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.
It is compulsory to shut down the UV system (see
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
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
•
For information about performing these procedures, see the chapters that follow. For
information about shutting down the machine.
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.
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.
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
Shutting Down the Entire
the UV system
and
13
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